vacuum pump

A750-04-880Issue F Original

Instruction Manual

ATEX Category 1, 2 and 3 EHRand SHR Liquid Ring Vacuum Pumps

Document Template: 02B01010 Attachment 5 Iss. 1

Declaration of Incorporation

We, Edwards, Crawley Business Quarter Manor Royal, Crawley, West Sussex, RH10 9LW, UK

declare under our sole responsibility, as manufacturer and person within the EU authorised to assemble the technical file, that the machine(s) Liquid Ring Vacuum Pump, ATEX Category 1 EHR2102S, EHR2170S, EHR2190S, EHR2290S, EHR2390S, SHR1300S, SHR2300S, SHR1400S,

SHR2400S, SHR1750S, SHR2750S, SHR1950S, SHR2950S, SHR21200S, SHR11500S, SHR21500S, SHR11850S, SHR21850S, SHR12500S, SHR22500S

to which this declaration relates is intended to be incorporated into other equipment and not to function independently. The machine(s) must not be put into service until the equipment into which it is incorporated has been brought into conformity with the provisions of the Machinery Directive, 2006/42/EC. The machine(s) are in conformity with the following standard(s) or other normative document(s) EN1012-2:1996+A1:2009 Compressors and Vacuum Pumps – Safety requirements – Part 2: Vacuum pumps EN12100:2010 Safety of machinery - General principles for design - Risk

assessment and risk reduction EN13463-1:2009 Non-electrical equipment for use in potentially explosive

atmospheres – Part 1: Basic method and requirements EN13463-5:2003 Non-electrical equipment intended for use in potentially explosive

atmospheres – Part 5: Protection by constructional safety ‘c’

and fulfils all the relevant provisions of

94/9/EC ATEX Directive on use in Potentially Explosive Atmospheres

II 1 G c IIC T4 Internal

II 2 G c IIC T4 External

The relevant essential requirements of the Machinery Directive 2006/42/EC Annex 1 have been applied and fulfilled so far as practicable for this partly completed machinery. The relevant technical documentation has been compiled in accordance with Annex VII Part B. In response to a reasoned request by the national authorities, Edwards Ltd undertakes to provide relevant information on the partly completed machinery (via email). 13.12.2012, Burgess Hill

Date and Place

P200

-05-

480

Issu

e B

C. Bailey, Global Technical Manager Systems Engineering

This product has been manufactured under a quality system registered to ISO9001



We, Edwards, Crawley Business Quarter Manor Royal, Crawley, West Sussex, RH10 9LW, UK

declare under our sole responsibility, as manufacturer and person within the EU authorised to assemble the technical file, that the machine(s) Liquid Ring Vacuum Pump, ATEX Category 2 EHR2102C, EHR2170C, EHR2190C, EHR2290C, EHR2390C, SHR1300C, SHR2300C, SHR1400C,

SHR2400C, SHR1750C, SHR2750C, SHR1950C, SHR2950C, SHR21200C, SHR11500C, SHR21500C, SHR11850C, SHR21850C, SHR12500C, SHR22500C

to which this declaration relates is intended to be incorporated into other equipment and not to function independently. The machine(s) must not be put into service until the equipment into which it is incorporated has been brought into conformity with the provisions of the Machinery Directive, 2006/42/EC. The machine(s) is in conformity with the following standard(s) or other normative document(s) EN1012-2:1996+A1:2009 Compressors and Vacuum Pumps – Safety requirements – Part 2: Vacuum pumps EN12100:2010 Safety of machinery - General principles for design - Risk









Date and Place

P200

-05-

500

Issu

e B





We, Edwards, Crawley Business Quarter, Manor Royal, Crawley, West Sussex, RH10 9LW, UK

declare under our sole responsibility, as manufacturer and person within the EU authorised to assemble the technical file, that the machine(s) Liquid Ring Vacuum Pump, ATEX Category 3 EHR2102D, EHR2170D, EHR2190D, EHR2290D, EHR2390D, SHR1300D, SHR2300D, SHR1400D,

SHR2400D, SHR1750D, SHR2750D, SHR1950D, SHR2950D, SHR21200D, SHR11500D, SHR21500D, SHR11850D, SHR21850D, SHR12500D, SHR22500D

to which this declaration relates is intended to be incorporated into other equipment and not to function independently. The machine(s) must not be put into service until the equipment into which it is incorporated has been brought into conformity with the provisions of the Machinery Directive, 2006/42/EC. The machine(s) is in conformity with the following standard(s) or other normative document(s) EN1012-2:1996+A1:2009 Compressors and Vacuum Pumps – Safety requirements – Part 2: Vacuum pumps EN12100:2010 Safety of machinery - General principles for design - Risk









Date and Place

P200

-05-

520

Issu

e B



© Edwards Limited 2012. All rights reserved. Page iEdwards and the Edwards logo are trademarks of Edwards Limited.

Contents

A750-04-880 Issue F

Contents

Section Page

1 Introduction ....................................................................................... 1

1.1 Scope and definitions ................................................................................................... 11.2 The liquid ring pump .................................................................................................... 21.2.1 ATEX Category 1, 2 and 3 pumps ...................................................................................... 21.3 ATEX Directive: 94/9/EC (Europe): ATEX Category 1, 2 and 3 pumps only ..................................... 31.3.1 Introduction .............................................................................................................. 31.3.2 Temperature classification ............................................................................................. 31.3.3 Normal operation ........................................................................................................ 51.3.4 Abnormal operation ..................................................................................................... 51.4 Applications ............................................................................................................... 6

2 TECHNICAL DATA ................................................................................. 7

2.1 Operating and storage conditions ..................................................................................... 72.2 Mechanical data .......................................................................................................... 72.3 Performance .............................................................................................................. 72.4 Noise and vibration data ...............................................................................................102.5 Lubrication Data ........................................................................................................102.6 Sealing liquid and seals flush liquid supplies .......................................................................102.6.1 General requirements ..................................................................................................102.6.2 Use of water based sealing liquid/seals flush liquid ..............................................................112.7 Materials of construction ..............................................................................................12

3 INSTALLATION ................................................................................... 15

3.1 Installation requirements ..............................................................................................153.1.1 General requirements ..................................................................................................153.1.2 ATEX specific requirements: ATEX Category 1, 2 and 3 pumps ..................................................153.2 Safety .....................................................................................................................163.3 Use of flammable sealing/seals flush liquids: ATEX Category 1, 2 and 3 pumps .............................173.4 Pumping system design ................................................................................................173.4.1 General ...................................................................................................................173.4.2 Oxygen monitoring: ATEX Category 2 and 3 pumps only .........................................................173.5 Sealing liquid and seals flush supply system design ...............................................................183.5.1 Introduction .............................................................................................................183.5.2 Total recirculation sealing liquid and seals flush supply system ................................................213.5.3 Partial recirculation sealing liquid and seals flush supply system ..............................................213.5.4 Once-through sealing liquid and seals flush supply system ......................................................213.6 Unpack and inspect .....................................................................................................213.7 Locate the pump ........................................................................................................223.8 Fit the motor or drive/transmission .................................................................................223.8.1 Introduction .............................................................................................................223.8.2 Fit a motor ...............................................................................................................223.8.3 Fit a drive and transmission ...........................................................................................233.9 Connect the pump to earth (ground) ................................................................................233.10 Connect the sealing liquid and seals flush pipelines ..............................................................243.11 Connect the pump inlet and outlet ..................................................................................243.11.1 Introduction .............................................................................................................243.12 Connect the process inlet .............................................................................................243.12.1 Connect the process outlet ...........................................................................................253.13 Fit and connect the temperature transmitter (if necessary): ATEX Category 1 and 2 pumps ..............253.14 Connect the electrical supply to the motor ........................................................................253.15 Check the direction of pump rotation ...............................................................................263.16 Check the leak tightness of the system .............................................................................263.16.1 General requirements ..................................................................................................263.16.2 Use of flammable sealing/seals flush liquids: ATEX Category 1, 2 and 3 pumps .............................27ge

a/00

214/

07/1

2

A750-04-880 Issue F

Page ii © Edwards Limited 2012. All rights reserved.Edwards and the Edwards logo are trademarks of Edwards Limited.

Contents

4 OPERATION ...................................................................................... 29

4.1 General operation safety ..............................................................................................294.2 Start-up ..................................................................................................................294.3 Cavitation and fluid hammer .........................................................................................304.4 Shut-down ................................................................................................................30

5 MAINTENANCE ................................................................................... 31

5.1 Safety information ......................................................................................................315.2 Maintenance plan .......................................................................................................315.3 Inspect the pipelines and connections ..............................................................................325.4 Check the ATEX safety devices for correct operation: ATEX Category 1 and 2 pumps ......................325.5 Calibrate the ATEX safety devices: ATEX Category 1 and 2 pumps .............................................335.6 Replenish the bearings with grease ..................................................................................335.7 Overhaul the pump .....................................................................................................335.8 Fault finding .............................................................................................................33

6 STORAGE AND DISPOSAL ....................................................................... 35

6.1 Storage ...................................................................................................................356.1.1 Preparation ..............................................................................................................356.1.2 Short-term storage .....................................................................................................356.1.3 Long-term storage ......................................................................................................366.2 Disposal ...................................................................................................................36

7 SERVICE AND SPARES ........................................................................... 39

7.1 Introduction .............................................................................................................397.2 Service ....................................................................................................................397.3 Spares .....................................................................................................................39

8 SAFETY RELATED PARTS OF CONTROL SYSTEMS ............................................ 41

8.1 Introduction .............................................................................................................418.2 Manual reset .............................................................................................................41

For return of equipment, complete the HS Forms at the end of this manual.

Illustrations

Figure Page

1 Recommended sealing liquid and seals flush supply system configurations: sheet 1 of 2 ...................191 Recommended sealing liquid and seals flush supply system configurations: sheet 2 of 2 ...................20

© Edwards Limited 2012. All rights reserved. Page iiiEdwards and the Edwards logo are trademarks of Edwards Limited.

Contents

A750-04-880 Issue F

Tables

Table Page

1 Temperature rises in seals flush liquids .............................................................................. 42 Maximum particle sizes ................................................................................................. 63 Operating and storage conditions ..................................................................................... 74 Mechanical data .......................................................................................................... 75 Performance Data ....................................................................................................... 76 Typical performance data and sealing liquid flow rates: single stage pumps .................................. 87 Typical performance data and sealing liquid flow rates: two stage pumps .................................... 98 Noise data ................................................................................................................109 Vibration data ...........................................................................................................1010 Sealing/seals flush liquid supply data ...............................................................................1111 External seals flush liquid flow rate .................................................................................1212 Materials of construction: process contact parts: EHR (S/C/D) pumps ........................................1213 Materials of construction: process contact parts: SHR (S/C/D) pumps .........................................1314 Maximum radial shaft loads and maximum inlet/outlet loads and moments .................................1615 Maintenance plan .......................................................................................................3216 Fault finding .............................................................................................................34

Associated publications

Publication title Publication number

Vacuum pump and vacuum system safety P400-40-100

This page has been intentionally left blank.

A750-04-880 Issue F

Page iv © Edwards Limited 2012. All rights reserved.Edwards and the Edwards logo are trademarks of Edwards Limited.

© Edwards Limited 2012. All rights reserved. Page 1Edwards and the Edwards logo are trademarks of Edwards Limited.

IntroductionA750-04-880 Issue F

1 Introduction

1.1 Scope and definitions

This manual provides installation, operation and maintenance instructions for the Edwards ATEX Category 1, 2 and 3 Liquid Ring Vacuum Pumps (abbreviated to ‘liquid ring pump(s)’ or ‘pump(s)’ in the remainder of this manual).

ATEX Category 1 model pumps are denoted by a “S” suffix on the pump designation, ATEX Category 2 model pumps are denoted by a "C" suffix on the pump designation and ATEX Category 3 pumps are denoted by a "D" suffix on the pump designation. For example, "SHR 2400C" specifies an ATEX Category 2 SHR 2400 pump.

Throughout this manual, the "(S/C/D)" annotation specifies that the related data or other information applies to both the standard model pump and the corresponding ATEX Category 1, 2 and 3 model pumps.

You must use your pump as specified in this manual.

Read this manual before you install and operate your pump. Important safety information is highlighted as WARNING and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined below.

CAUTIONCautions are given where failure to observe the instruction could result in damage to the equipment, associated equipment and process

The units used throughout this manual conform to the SI international system of units of measurement.

The pump identification and rating plate (refer to the System Manual) provides specific details about the pump, including: pump type; part number and serial number; and so on.

WARNING

Warnings are given where failure to observe the instruction could result in injury or death to people.

A750-04-880 Issue F

Page 2 © Edwards Limited 2012. All rights reserved.Edwards and the Edwards logo are trademarks of Edwards Limited.

Introduction

The following IEC warning labels appear on the pump:

1.2 The liquid ring pump

1.2.1 ATEX Category 1, 2 and 3 pumps

The ATEX Category 1 EHR and SHR liquid ring pumps have been specifically developed to meet the requirement for pumps capable of pumping an explosive atmosphere with an internal area classification of Zone 0, without the need for protective devices such as flame arrestors.



The pumps are certified as Category 1, 2 or 3 equipment under the ATEX Directive (94/9/EC); for the certifications to be valid, the pumps must be installed exactly as specified in this manual.

The pumps have been designed using the principle of constructional safety, which ensures that potential ignition sources are eliminated during normal operation for ATEX Category 3, in the event of an expected malfunction for ATEX Category 2 and in the event of a rare malfunction for ATEX Category 1.

The pumps are suitable for pumping a wide range of flammable and non-flammable gases and vapours, subject to the restrictions specified in Section 1.3.4.

ATEX Category 1 pumps have mechanical seals and will be supplied configured for external seals flush supplies.

ATEX Category 2 pumps have mechanical seals, and can be supplied configured in one of two ways:

Configured for external seals flush supplies.

Configured with internal seals flush supplies, provided internally from the sealing liquid ring. These pumps are suitable for use on clean applications only.

If you have an ATEX Category 2 pump configured for external seals flush supplies, you must provide a seals flush supply for each seal.

ATEX Category 3 pumps have mechanical seals. Each seal has its own seals flush supply, provided internally from the sealing liquid ring.

ATEX Category 1, 2 and 3 pumps are suitable for use only on the application for which this pump is supplied. Please consult Edwards for any changes in application.

Warning - refer to accompanying documentation.

Protective earth (ground)

Ear defenders must be worn. (Only fitted to pumps which generate noise levels (at 1 metre) > 85 dB(A): see Section 2.4.)



1.3 ATEX Directive: 94/9/EC (Europe): ATEX Category 1, 2 and 3 pumps only

1.3.1 Introduction

The pump must be incorporated into a larger system on which the internal atmosphere has an area classification of Zone 0 (for ATEX Category 1 pumps) or Zone 1 (for ATEX Category 2 pumps) or Zone 2 (for ATEX Category 3 pumps). Such systems will be certified in accordance with the above Directive, and must be identified by an ATEX system rating label.

For certification to be valid, the pump must be installed exactly as specified in this manual.

ATEX Category 1 pumps are fitted with an ATEX rating label containing the following information:



The notations used in these ratings are as follows:

1.3.2 Temperature classification

The temperature classification applied to the pump relates to the auto-ignition temperature of flammable materials that can be pumped.

The pump has a T4 classification and is suitable for pumping flammable materials that have an auto-ignition temperature greater than 135 oC. Refer to Section 2 of this manual for the necessary pump operating conditions.

II 1 G c, IIC T4 InternalII 2 G c, IIC T4 External



specifies that the pump can be used in a potentially explosive atmosphere.

II Equipment group II (non-mining)

1 Equipment category 1



G Suitable for potentially explosive gas atmospheres

c Complies with ‘constructional safety’ protection strategy

IIC Suitable to pump gas group IIC

T4 Gas auto-ignition temperature: see Section 1.3.2.

A750-04-880 Issue F


Introduction

The T4 temperature classification is achieved by limiting the temperature of the sealing liquid ring and of the seals flush liquid (supplied to each of the mechanical seals) to 70 oC. The maximum temperature rise which can occur in the seals flush liquid is 30 oC (assuming that a non-flashing hydrocarbon liquid is used: see Table 1). Therefore, the maximum external temperature of the seals is 100 oC, which is within the T4 classification requirements.

The maximum operating temperature of the pump is determined by:

The temperature of the sealing liquid supply.

The temperature rise of the sealing liquid in the pump, due to power absorbed by the liquid ring to effect gas compression.

The temperature rise of the sealing liquid in the pump, due to the condensation of vapours which enter the pump.

The temperature rise in the seals flush liquid to the mechanical seals, due to friction between the stationary and rotary parts of the seals.

If you use a total recirculation sealing liquid supply system (see Section 3.5), your cooler must be suitable for the temperature rises that will occur.

Conservative estimates of the temperature rise for different seals flush liquids are shown in Table 1 (see below). Note that mineral oil is included in Table 1 for comparison purposes only; you cannot use mineral oil as the seals flush liquid, due to the resulting high temperature rise.

Table 1 - Temperature rises in seals flush liquids

The liquid ring pumps are virtually isothermal machines and, for applications that use water as the sealing liquid, the temperature rise across the pump is approximately 5 oC. The temperature rise is directly proportional to the specific heat of the sealing liquid; for a liquid which has a specific heat which is half that of water, the temperature rise will be approximately 10 oC.

With the T4 temperature classification, limiting the sealing liquid ring to a maximum temperature of 70 oC and limiting the temperature of the gas at the pump inlet to 70 oC allows for a temperature rise of 38 oC in the sealing liquid; this will never occur, provided that the sealing liquid supply is maintained.

On ATEX Category 1 pumps with external seals flush supplies, you must configure your system so that the seals flush supplies cannot be interrupted during pump operation (refer to Section 3.5):

You must fit flow switches in the seals flush pipelines of all systems.

You must fit either of the following:

If you use a sealing liquid reservoir to provide the seals flush supplies, fit a level switch to the reservoir.

If you do not use a sealing liquid reservoir to provide the seals flush supplies, fit a pressure switch to the seals flush manifold.

On ATEX Category 2 pumps with external seals flush supplies, you must configure your system so that the seals flush supplies cannot be interrupted during pump operation (refer to Section 3.5):

You must fit flow switches in the seals flush pipelines of all systems.

If you use a sealing liquid reservoir to provide the seals flush supplies, you may also fit an optional level switch to the reservoir.

LiquidMaximum temperature

rise *

Water/flashing hydrocarbons 20 oC

Non-flashing hydrocarbons 30 oC

Mineral oil † 70 oC

* With maximum rotation speed of 3600 r min-1.

† You cannot use mineral oil as seals flush liquid!



if you use an external seals flush supply, you may also want to fit an optional pressure switch in the seals flush supply pipeline.

On ATEX Category 2 pumps, if you use a sealing liquid which has a boiling point higher than 100 oC, the temperature of the sealing liquid ring must be monitored by a temperature transmitter, set to shut down the pump when the temperature reaches 70 oC: refer to Section 3.13.

1.3.3 Normal operation

The ATEX Category 1, 2 and 3 liquid ring pumps rely on the pump’s constructional safety for the safe pumping of flammable materials. In normal operation, as defined by this manual, the pump is safe for the pumping of flammable materials where there is no risk that any particles larger than those specified in Table 2 could enter the pump at any time, and so cause a potential ignition hazard.

Where there is no such risk, the pump can be used to pump flammable materials from gas group IIC, within the normal parameters as defined in this manual.

The pump can be used with either flammable or non-flammable sealing liquids. Where flammable sealing liquids are used, you must comply with the requirements of Section 3.3.

On ATEX Category 2 pumps configured for external seals flush supplies, the seals flush supplies must comply with the requirements of Section 2.6. ATEX category 2 pumps configured for internal seals flush supplies must only be used on clean applications.

The materials of construction of the pump are specified in Section 2.7. Before you use the pump, you must ensure that these materials are compatible with the gases and vapours you will pump.

1.3.4 Abnormal operation

Pumping gases with temperatures greater than the system temperature classification (see Section 1.3.2).

Pumping hydrocarbon oxides.

Pumping oxidants.

Pumping pyrophoric gases.

Pumping gases that tend to self-decompose, or that are chemically unstable.

Pumping gases that contain particles larger than those specified in Table 2.

Use with oxygen enriched atmospheres.

Use of the pump with mineral oil as the seals flush liquid.

Use of the pump with a sealing liquid or seals flush liquid which does not comply with the requirements of Section 2.6.

Pumping of, or use of, the pump in the presence of explosive dust atmospheres.

WARNING

The pump relies on the principle of constructional safety to pump flammable gases and vapours safely. To conform with constructional safety requirements, it is your responsibility to ensure that particles larger than those specified in Table 2 cannot enter the pump at any time.

WARNING

Misuse of the pump as described below is strictly prohibited.

A750-04-880 Issue F


Introduction

Use of the pump in ambient conditions other than those specified in Section 3.

Use of an ATEX Category 2 pump configured for internal seals flush supplies on applications which are not clean.

Table 2 - Maximum particle sizes

1.4 Applications

The pumps are suitable for use in distillation, filtration, evaporation, drying, stripping, solvent recovery and deaeration processes in a wide range of industries and applications.

You must ensure that the pump is suitable for your application.

If you have any doubts as to the suitability of the pump for your application, refer to the Edwards guidelines on vacuum pump and vacuum system safety (see the Associated Publications at the end of the contents list at the front of this manual).

Pump

Maximum size of particles (mm) thatcan be allowed to enter the pump

Metallicparticles

Non-metallicparticles

EHR 2102S/C/D, 2170S/C/D 0.03 0.3

EHR 2190S/C/D, 2290S/C/D, 2390S/C/D 0.03 0.3

SHR 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/D 0.035 0.4


SHR 21200S/C/D, 11500S/C/D, 21500S/C/D,11850S/C/D, 21850S/C/D

0.05 0.5

SHR 12500S/C/D, 22500S/C/D 0.07 0.5


TEC

HN

ICAL D

ATA

A750-04-880 Issue F

2 TECHNICAL DATA

2.1 Operating and storage conditions

Table 3 - Operating and storage conditions

2.2 Mechanical data

Table 4 - Mechanical data

2.3 Performance

Note: The performance data specified in Tables 5 to 7 applies to pumps used with water as the sealing liquid. Additional performance data may be supplied in your System Manual if you have specifically ordered your pump for use with a different sealing liquid.

Note: The "Maximum sealing liquid flow rate" data specified in Tables 6 and 7 may include seals flush liquid which flows into the sealing liquid ring on pumps without a closed-loop seals configuration. Refer to your System Manual for the specific details of your pump system.

Table 5 - Performance Data

Ambient operating temperature range -20 to 40 oC

Ambient storage temperature range -30 to 50 oC

Maximum ambient operating humidity 90%

Maximum operating altitude 1000 m

Maximum inlet gas temperature 70 oC

DimensionsMassProcess and sealing liquid connectionsIngress Protection (IP) rating

Refer to your System ManualRefer to your System ManualRefer to your System ManualIP54

Maximum flatness deviation for mounting *

EHR 2102S/C/D, 2170S/C/D 0.1 mm m-1

EHR 2190S/C/D, 2290S/C/D, 2390S/C/D 0.1 mm m-1

SHR 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/D 0.1 mm m-1

SHR 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/D 0.1 mm m-1

SHR 21200S/C/D, 11500S/C/D, 21500S/C/D, 11850S/C/D, 21850S/C/D

0.2 mm m-1

SHR 12500S/C/D, 22500S/C/D 0.4 mm m-1

* Refer to Section 3.7.

Maximum inlet capacity See Tables 6 and 7

Maximum outlet pressure 1.1 bar absolute, 1.1 x 105 Pa

Shaft power See Tables 6 and 7

A750-04-880 Issue F


TEC

HN

ICAL D

ATA

Table 6 - Typical performance data and sealing liquid flow rates: single stage pumps

Pump(s)Speed *r min-1

MP kW†

Typical performance § Maximum sealingliquid

flow ratem3 h-1

100 mbara1.0 x 104 Pa

200 mbara2.0 x 104 Pa

800 mbara8.0 x 104 Pa

m3 h-1 kW m3 h-1 kW m3 h-1 kW

50 Hz operation

SHR 1300S/C/D 1470 15 263 12.3 382 12.3 470 10 2.7

SHR 1400S/C/D 1470 18.5 430 13.9 540 14.5 655 14 2.7

SHR 1750S/C/D 980 30 630 28 1000 28 1145 20 6.5

SHR 1950S/C/D 980 37.5 800 37 1450 37 1550 25 7.0

SHR 11500S/C/D 735 75 1100 64 2000 64 2300 46 12.0

SHR 11850S/C/D 735 90 1300 84 2400 83 2950 66 14.0

SHR 12500S/C/D 585 110 3000 96 4000 96 4300 68 16.0

60 Hz Operation

SHR 1300S/C/D 1740 18.5 306 17 460 17 550 12.6 2.7

SHR 1400S/C/D 1740 22 475 18.5 675 19.5 780 19 2.7

SHR 1750S/C/D 1150 45 700 37 1150 37 1400 28 9.0

SHR 1950S/C/D 1150 55 850 50 1720 50 1900 38 9.5

SHR 11500S/C/D 880 110 1100 97 2250 97 2600 72 14.0

SHR 11850S/C/D 880 160 1500 126 2630 126 3200 96 14.0

SHR 12500S/C/D 585 110 3000 96 4000 96 4300 68 16.0

* Nominal pump rotational speed.† Motor power.§ Performance specifies the suction capacity (m3 h-1) and shaft power (kW) for the

specified inlet pressures (100 mbara, 200 mbara and 800 mbara).


TEC

HN

ICAL D

ATA

A750-04-880 Issue F

Table 7 - Typical performance data and sealing liquid flow rates: two stage pumps

Pump(s)Speed *r min-1

MP kW†

Typical performance § Maximum sealingliquid

flow ratem3 h-1

33 mbara3.3 x 103 Pa

100 mbara1.0 x 104 Pa

200 mbar2.0 x 104 Pa

m3 h-1 kW m3 h-1 kW m3 h-1 kW

50 Hz operation

EHR 2102S/C/D 2850 4 52 3.8 98 3.9 102 4 0.7

EHR 2170S/C/D 2850 5.5 102 5 165 5 172 5.5 0.9

EHR 2190S/C/D 1470 5.5 144 4.4 194 5 192 5.5 1.6

EHR 2290S/C/D 1470 7.5 230 6.2 290 6.8 285 7.2 1.8

EHR 2390S/C/D 1470 11 300 7.8 390 8.7 385 9.5 1.8

SHR 2300S/C/D 1470 18.5 370 13 450 13.3 430 13.4 2.7

SHR 2400S/C/D 1470 22 510 14.5 620 16.2 570 18.5 2.7

SHR 2750S/C/D 980 45 750 32.5 1200 35 1240 37 9.0

SHR 2950S/C/D 980 55 1100 37 1630 38.5 1660 42 9.5

SHR 21200S/C/D 735 75 1350 40 1950 43 1850 50 14.0

SHR 21500S/C/D 735 75 1750 56 2500 59 2400 61 14.0

SHR 21850S/C/D 735 90 2600 65 3250 72 3300 80 16.0

SHR 22500S/C/D 585 132 4110 85 4450 93 4150 105 21.0

60 Hz Operation

EHR 2102S/C/D 3450 7.5 52 5.5 112 5.5 122 6 0.9

EHR 2170S/C/D 3450 11 102 7.5 201 7.5 212 8.8 1.1

EHR 2190S/C/D 1740 7.5 145 6 210 7 214 7.5 1.8

EHR 2290S/C/D 1740 11 250 9 330 9.4 330 9.8 2.3

EHR 2390S/C/D 1740 15 300 11 425 12 425 12.8 2.3

SHR 2300S/C/D 1740 21 360 18 520 18.2 500 18.4 2.7

SHR 2400S/C/D 1740 35 500 19.5 700 21.7 660 24.7 2.7

SHR 2750S/C/D 1150 55 800 37.5 1400 42 1420 45.4 9.0

SHR 2950S/C/D 1150 63 1170 42.5 1850 46 1920 52 9.5

SHR 21200S/C/D 880 85 1450 57 2250 65 2200 71 14.0

SHR 21500S/C/D 880 125 1950 87 2900 92 2950 97 14.0

SHR 21850S/C/D 880 150 2900 100 3700 110 3800 119 16.0

SHR 22500S/C/D 585 132 4110 85 4450 93 4150 105 21.0

* Nominal pump rotational speed.† Motor power.§ Performance specifies the suction capacity (m3 h-1) and shaft power (kW) for the

specified inlet pressures (33 mbara, 100 mbara and 200 mbara).

A750-04-880 Issue F


TEC

HN

ICAL D

ATA

2.4 Noise and vibration data

Table 8 - Noise data

Table 9 - Vibration data

2.5 Lubrication Data

You must use a high quality lithium-based grease according to DIN51825 K2K-30. Refer to manufacturer’s MSDS when using this grease.

2.6 Sealing liquid and seals flush liquid supplies

2.6.1 General requirements

ATEX Category 1 and 2 pumps configured for external seals flush supplies require a sealing liquid supply and seals flush liquid supplies. ATEX Category 2 pumps configured for internal seals flush supplies and ATEX Category 3 pumps only require a sealing liquid supply, as the seals flush supplies are provided internally from the sealing liquid ring.

PumpTypical continuous A-weighted emission sound pressure level

(dB) plus uncertainty * †

* Nominal pump rotational speed.† Measured at 1 metre free field.

EHR 2102S/C/D, 2170S/C/D ≤ 80 ± 3

EHR 2190S/C/D, 2290S/C/D, 2390S/C/D ≤ 80 ± 3

SHR 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/D ≤ 80 ± 3



SHR 12500S/C/D, 22500S/C/D ≤ 82 ± 3

PumpVibration velocity levels

mm s-1 rms *

EHR 2102S/C/D, 2170S/C/D 4.5

EHR 2190S/C/D, 2290S/C/D, 2390S/C/D 4.5

SHR 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/D 4.5



SHR 12500S/C/D, 22500S/C/D 4.5

* Zone boundary A/B according to ISO 10816-1; clause 5.3.1 and Annex. B.

WARNING

The sealing liquid and seals flush liquid must comply with the requirements specified below. If they do not, the ATEX certification of the pump and of your system will be invalid, and there may be a risk of fire or explosion when you operate the pump.


TEC

HN

ICAL D

ATA

A750-04-880 Issue F

Your sealing liquid and (if necessary on ATEX Category 2 pumps) seals flush liquid supplies must meet the following requirements:

If you use a flammable sealing liquid and do not monitor the oxygen concentration, then your pump is ATEX Category 1 internal. For ATEX Category 2 or Category 3 pumps, you must check the leak tightness of your system after installation (see Section 3.16) and monitor the oxygen concentration at the process outlet during operation (see Section 3.4.2).

On ATEX Category 2 pumps configured for external seals flush supplies, if the sealing liquid is not the same as the seals flush liquid, the two liquids must be compatible.

The liquid(s) must be compatible with the process gases and vapours pumped, and with the materials of construction of the pump (see Section 2.7).

The liquid(s) must not contain any particles larger than those specified in Table 2.

The pressure of the sealing liquid and (on ATEX Category 2 pumps configured for external seals flush supplies) the seals flush liquid supplies must be adequate to overcome pressure losses through the supply pipelines. The pressure of each supply (at the corresponding inlet port on the pump) must be > 0.05 bar (5 x 103 Pa) above the outlet pressure.

When the vapour pressure of the sealing liquid is close to the process inlet pressure, the liquid sealing ring can start to boil and this may result in cavitation. (Cavitation occurs when vapour bubbles formed at the process inlet are transferred to the process outlet, where the bubbles collapse under pressure with potentially destructive force.)

You should therefore ensure that the temperature of the sealing liquid supply is as low as possible. If the temperature of the process gas is > 70 oC, consult Edwards Application Engineers for advice.

2.6.2 Use of water based sealing liquid/seals flush liquid

If you use a water based sealing liquid or seals flush liquid, where ambient temperatures can fall close to 0 oC or below, take appropriate precautions to ensure that the liquid does not freeze and damage the pump.

Such precautions may include the addition of ethylene glycol anti-freeze to the liquid, in concentrations to suit the climatic conditions. You must not use other types of anti-freeze.

Table 10 - Sealing/seals flush liquid supply data

Sealing liquid/seals flush liquid * pressure > outlet pressure + 0.05 bar, 5 x 103 Pa

Sealing liquid/seals flush liquid * auto-ignition temperature > 160 oC

Sealing liquid

Maximum viscosity † 1 x 10-5 m2 s-1

Maximum density † 1200 kg m-3

Minimum conductivity 1000 μS m-1

Maximum flow rate See Tables 6 and 7

Maximum temperature 70 oC

* ATEX Category 1 and 2 pumps configured for external seals flush supplies only.† Contact your supplier or Edwards if you want to use a sealing liquid with higher density/viscosity.

A750-04-880 Issue F


TEC

HN

ICAL D

ATA

2.7 Materials of construction

Table 11 - External seals flush liquid flow rate

PumpNominal flow rate to

both seals1 min-1 *

* Flow rates are nominal only and based on standard materials of construction and non-flashing hydrocarbon seals flush liquid with specific heat (Cp) of 1.8 kJ kg-1K-1 and specific gravity (SG) of 0.8. For specific applications, different materials of construction and seals flush liquid with lower specific heat and specific gravity please refer to the System Manual or consult Edwards.

Minimum flow rate to both seals1 min-1 *

EHR 2102S/C/D, 2170S/C/D 8.0 6.0

EHR 2190S/C/D, 2290S/C/D, 2390S/C/D 9.0 7.0




SHR 12500S/C/D, 22500S/C/D 28.0 26.0

Table 12 - Materials of construction: process contact parts: EHR (S/C/D) pumps

Component Cast iron Spheroidal graphite (ductile) iron

Casings Grey cast Iron Spheroidal graphite (ductile) cast iron

Impellers Spheroidal graphite (ductile) cast iron Spheroidal graphite (ductile) cast iron

Shaft Stainless steel 420 Stainless steel 420

Distance piece Stainless steel 316 Stainless steel 316

Shaft seals - Faces - Elastomers - Metal parts - Springs

Single mechanicalSilicon carbide vs carbonFPMStainless steel 316Stainless steel 316


Fasteners Carbon steel / Stainless steel 316 Carbon steel / Stainless steel 316

Gaskets Compressed fibre Compressed fibre

Sealant Polyester urethane Polyester urethane

Manual valves - Body - Seals

BallStainless steel 316PTFE


Stainless steel fitted Stainless steel

Casings Grey cast iron Stainless steel 316

Impellers Stainless steel 316 Stainless steel 316

Shaft Stainless steel 420 Stainless steel 316





Fasteners Carbon steel / Stainless steel 316 Stainless steel 316



TEC

HN

ICAL D

ATA

A750-04-880 Issue F

Component Stainless steel fitted Stainless steel

Sealant Polyester urethane Silicone




Aluminium bronze Super duplex stainless steel

Casings Nickel aluminium bronze 25% Chrome duplex stainless steel*

Impellers Nickel aluminium bronze 25% Chrome duplex stainless steel*

Shaft Monel® 25% Chrome duplex stainless steel*

Distance piece Monel® 25% Chrome duplex stainless steel*


Single mechanicalTungsten carbide vs carbonNitrileMonel®Monel®

Single mechanicalTungsten carbide vs carbonNitrile25% Chrome duplex stainless steel*

Hastelloy®

Fasteners Monel® 25% Chrome duplex stainless steel*




N/A N/A

* PREN = % Cr + 3.3% Mo + 16% N ≥ 40

Table 13 - Materials of construction: process contact parts: SHR (S/C/D) pumps

Component Cast iron Spheroidal graphite (ductile) iron

Casings Grey cast Iron Spheroidal graphite (ductile) cast iron

Impellers Spheroidal graphite (ductile) cast iron Spheroidal graphite (ductile) cast iron

Shaft Stainless steel 420* / Alloy steel† Stainless steel 420* / Alloy steel†

Shaft sleeves Stainless steel 316 Stainless steel 316



Single mechanicalSilicon carbide‡ / Stellite®** vs carbonFPM‡ / EPDM**

Stainless steel 316Stainless steel 316

Single mechanicalSilicon carbide‡ / Stellite®** vs carbonFPM‡ / EPDM**


Valve plates**

- Body - Balls / gaskets

BallCarbon steelEPDM


Fasteners Carbon steel / Stainless steel 316 Carbon steel / Stainless steel 316






Table 12 - Materials of construction: process contact parts: EHR (S/C/D) pumps (continued)

A750-04-880 Issue F


TEC

HN

ICAL D

ATA

Component Stainless steel fitted Stainless steel

Casings Grey cast iron Stainless steel 316

Impellers Stainless steel 316 Stainless steel 316

Shaft Stainless steel 420* / Alloy steel† Stainless steel 316

Shaft sleeves Stainless steel 316 Stainless steel 316



Single mechanicalSilicon carbide‡ / Stellite® ** vs carbonFPM‡ / EPDM**


Single mechanicalSilicon carbide‡ /Stellite®** vs carbonFPMStainless steel 316Stainless steel 316

Valve plates**

- Body - Balls / gaskets



Fasteners Carbon steel / Stainless steel 316 Stainless steel 316


Sealant Polyester urethane Silicone




Aluminium bronze Super duplex stainless steel

Casings Nickel aluminium bronze 25% Chrome duplex stainless steel††

Impellers Nickel aluminium bronze 25% Chrome duplex stainless steel††

Shaft Monel® 25% Chrome duplex stainless steel††

Shaft sleeves Monel® 25% Chrome duplex stainless steel††

Distance piece Monel® 25% Chrome duplex stainless steel††


Single mechanicalTungsten carbide vs carbonNitrileMonel®Monel®

Single mechanicalTungsten carbide vs carbonNitrile25% Chrome duplex stainless steel††

Hastelloy®

Fasteners Monel® 25% Chrome duplex stainless steel††




N/A N/A

* SHR1300, 2300, 1400, 2400, 1750, 2750, 1950, 2950† SHR21200, 11500, 21500, 11850, 21850, 12500, 22500‡ SHR1300, 2300, 1400, 2400, 1750, 2750, 1950, 2950, 21200, 11500, 21500, 11850, 21850** SHR12500, 22500†† PREN = % Cr + 3.3% Mo + 16% N ≥ 40

Table 13 - Materials of construction: process contact parts: SHR (S/C/D) pumps (continued)


INST

ALLA

TIO

NA750-04-880 Issue F

3 INSTALLATION

3.1 Installation requirements


The following requirements apply to all pumps:

The pump is supplied as a bare shaft pump. To operate the pump, you must fit a motor, or connect the pump to a drive with the characteristics set out in Section 2.

You must use a suitable transmission system between the drive and the pump, to ensure that radial loading on the pump input shaft is kept to a minimum. The loadings must be less than the maximum radial loadings given in Table 14. The transmission system can take the form of a coupling or a belt drive.

If a sealing liquid and seals flush supply system is not already fitted, you must install the pump in one of the system configurations specified in Section 3.5.

The pump may be noisy during operation (see Section 2.4). Where necessary, you must either install the pump in an acoustic enclosure, or ensure that people wear suitable protective equipment (such as ear defenders) when they are close to the operating pump.

3.1.2 ATEX specific requirements: ATEX Category 1, 2 and 3 pumps

ATEX Category 1, 2 and 3 pumps must be installed in accordance with the installation requirements set out in this manual. This is essential for the ATEX Category 1, 2 or 3 certification to be valid. The following requirements must be met:

The motor must comply with the requirements of the applicable ATEX Directives (94/9/EC and 99/92/EC) in order for the external ATEX certification to apply.

The transmission system must comply with the requirements of the applicable ATEX Directives (94/9/EC and 99/92/EC) in order for the external ATEX certification to apply.

Your vacuum system design must ensure that the inlet of the pump is protected from the ingress of particles larger than those specified in Table 2. Unless your design ensures that such particle ingress cannot occur, use upstream filters.

On ATEX Category 1 pumps configured for external seals flush supplies, you must ensure that the seals flush supplies cannot be interrupted during pump operation, and configure your system to stop the pump in the event of seals flush supply failure. You must therefore fit a flow switch in each of the seals flush supply pipelines and a pressure switch in the seal flush supply manifold or a level switch if you are using a reservoir. The flow switches must be high integrity devices and must be ‘fail to safety’ in accordance with Annex II Section 1.5 of Directive 94/9/EC. You must connect the switches to an ATEX safety control circuit, configured to stop the pump in the event of seals flush liquid supply failure.

On ATEX Category 2 pumps configured for external seals flush supplies, you must ensure that the seals flush supplies cannot be interrupted during pump operation, and configure your system to stop the pump in the event of seals flush supply failure. You must therefore fit a flow switch in each of the seals flush supply pipelines. The flow switches must be high integrity devices and must be ‘fail to safety’ in accordance with Annex II Section 1.5 of Directive 94/9/EC. You must connect the switches to an ATEX safety control circuit, configured to stop the pump in the event of seals flush liquid supply failure.

The maximum loads and moments imposed by your system pipelines on the inlet and outlet connections must not exceed those specified in Table 14.

WARNING

The pump must be installed in accordance with the requirements detailed below.

A750-04-880 Issue F


INST

ALLA

TIO

N

All pumps are fitted with earth (ground) studs. You must use these studs to connect the pump to a suitable earth (ground) to prevent a potential ignition source: refer to Section 3.9.

ATEX Category 2 pumps configured for internal seals flush supplies must only be used on clean applications.

On ATEX Category 2 pumps, if you use a sealing liquid which has a boiling point higher than 100 oC, the pump must be fitted with a temperature transmitter that measures the sealing liquid temperature. This transmitter must be used to switch off the pump in the event that the sealing liquid temperature exceeds 70 oC. You must connect the temperature transmitter to an ATEX safety control circuit, configured to stop the pump in the event of high sealing liquid temperature. Note also that:

The temperature transmitter must be a high integrity device and must ‘fail to safety’ in accordance with Annex II Section 1.5 of Directive 94/9/EC.

3.2 Safety

A suitably trained and supervised technician must install the pump.

Wear the appropriate safety-clothing when you come into contact with contaminated components.

If your pumping system has already been used, vent and purge it before you start installation work.

Ensure that the installation technician is familiar with the safety procedures which relate to the sealing/seals flush liquid(s) and to the products handled by the pumping system.

Disconnect the other components in the pumping system from the electrical supply/drive system so that they cannot be operated accidentally.

WARNING

If you use a water-based sealing liquid, harmful bacteria (such as Legionella) could propagate inside the pump and sealing liquid supply system. Take suitable precautions to inhibit bacterial growth and to ensure that untreated bacteria-bearing mist is not discharged from the system.

WARNING

Obey the safety instructions listed below and take note of appropriate precautions when you install the pump.

Table 14 - Maximum radial shaft loads and maximum inlet/outlet loads and moments

PumpsDrive shaft diameter:

mm

Maximum radial shaft

load: N

Maximum external load

on inlet/outlet

connection: N

Maximum external

moment on inlet/outlet connection:

Nm

EHR 2102S/C/D, 2170S/C/DEHR 2190S/C/D, 2290S/C/D, 2390S/C/D

2535

20003200

280440

170270

SHR 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/DSHR 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/DSHR 21200S/C/D, 11500S/C/D, 21500S/C/D, 11850S/C/D, 21850S/C/DSHR 12500S/C/D, 22500S/C/D

406080

110

410058009400

14500

5708801330

1770

350540810

1080


INST

ALLA

TIO


3.3 Use of flammable sealing/seals flush liquids: ATEX Category 1, 2 and 3 pumps

Small amounts of the sealing/seals flush liquid can leak out from the mechanical shaft seals into the bearing housing.

If you use a flammable sealing liquid in the pump, the atmosphere inside the pump will become saturated with a flammable vapour.

If oxygen or air is introduced into the pump, it is possible for the internal atmosphere to become potentially explosive, independently of the flammability of the pumped process gases/vapours. This could cause the flammable zone inside the pump to be different from the flammable zone in the process pipelines.

To ensure that the flammable zone inside the pump is not changed, you must:

Ensure that the system is leak tight: refer to Section 3.16.

After each process pumping cycle, use an inert gas purge to vent the system to atmospheric pressure. This will ensure that when the next evacuation cycle is started, the oxygen concentration is either 2% by volume below the limiting oxygen concentration or 60% of the limiting oxygen concentration if it is less than 5% by volume.

3.4 Pumping system design

3.4.1 General

The gases to be pumped must not contain particles larger than those specified in Table 2. If necessary, incorporate an inlet filter in the inlet pipeline to the pump, to prevent the ingress of solids into the pump.

Make sure that the process outlet pipeline cannot become blocked. If you have an outlet-isolation valve, make sure that you cannot operate the pump with the valve closed.

Install a non-return valve in the inlet pipeline, to prevent the reverse-flow of sealing liquid into your system when the pump is switched off.

Provide for a purge of inert gas when you shut down the pumping system, to dilute dangerous gases to safe concentrations.

Design your pumping system such that, if it is shut down automatically, it cannot restart automatically without being reset manually.

3.4.2 Oxygen monitoring: ATEX Category 2 and 3 pumps only

If you use a flammable sealing liquid or a flammable seals flush liquid and you cannot carry out a pressure rise test to determine the leak tightness of the system (see Section 3.16), your pumping system must be configured so that the oxygen concentration at the process outlet is constantly monitored.

If an oxygen concentration exceeding the values specified in Section 3.3 is detected, your system must be configured to:

Introduce an inert gas into the system to reduce the oxygen concentration,

or:

Shut down the pump.

WARNING

Obey the safety instructions listed below and take note of appropriate precautions when you install the pump.

A750-04-880 Issue F


INST

ALLA

TIO

N

3.5 Sealing liquid and seals flush supply system design

3.5.1 Introduction

Your pump may be supplied with a sealing liquid and (for ATEX Category 1 and 2 pumps configured for external seals flush supplies) seals flush supply system fitted, configured in one of three ways, as described in Sections 3.5.2 to 3.5.4.

If your pump is not supplied with such a system, you must install the pump in a supply system which:

Supplies sealing liquid to the pump.

On ATEX Category 1 and 2 pumps configured for external seals flush supplies only, provides seal flush supplies to the seals in the pump, to cool the seals and ensure that the seals temperature remains within the temperature classification of the pump (see Section 1.3.2).

Your supply system must be configured in one of the following three ways (shown in Figure 1):

Total recirculation system: see Section 3.5.2.

Partial recirculation system: see Section 3.5.3.

Once-through system: see Section 3.5.4.

If you need to install an ATEX Category 1 or 2 pump configured for internal seals flush supplies in a supply system, your system design must ensure that:

The sealing liquid supply to the pump is clean.

If you need to install an ATEX Category 1 or 2 pump configured for external seals flush supplies in a supply system, your system design must ensure that:

The seals flush pipelines provide seals flush liquid supplies to cool the seals in the pump.

On ATEX Category 1 the seals flush supplies cannot be interrupted; during pump operation. The supply pipelines must incorporate flow switches in each of the seals flush supply pipelines and a pressure switch in the seal flush supply manifold or a level switch if you are using a reservoir: refer to Sections 3.5.2 to 3.5.4 for more details.

On ATEX Category 2 the seals flush supplies cannot be interrupted; during pump operation. The supply pipelines must incorporate flow switches in each of the seals flush supply pipelines: refer to Sections 3.5.2 to 3.5.4 for more details.

The sealing and seals flush liquid supplies to the pump are clean.

WARNING

You must not start the pump if the level of sealing liquid is above the pump centre line. To avoid this, configure the pump as shown in Figure 1, detail A, B or C and start-up the pump as described in Section 4.2.


INST

ALLA

TIO


Figure 1 - Recommended sealing liquid and seals flush supply system configurations: sheet 1 of 2

A750-04-880 Issue F


INST

ALLA

TIO

N

Figure 1 - Recommended sealing liquid and seals flush supply system configurations: sheet 2 of 2

1. External seals flush supply * Ø

2. Seals flush supply valve Ø

3. Seals flush pressure switch † Ø

4. Sealing liquid seals flush supply pipeline * Ø

5. Seals flush flow switch § Ø

6. Seals flush pipelines # Ø

7. Priming/drain valve8. Liquid ring pump9. Liquid ring supply pipeline10. Sealing liquid supply flow indicator 11. Temperature gauge12. Flow regulating valve13. Cooler14. Sealing liquid reservoir15. Float operated fill/top-up valve

16. Liquid ring supply valve17. Liquid ring supply18. Level switch ‡ Ø

19. Discharge outlet/vent20. Overflow21. Pump outlet pipeline22. Outlet temperature gauge23. Temperature transmitter ¤

24. Non-return valve 25. Pump inlet26. Pressure gauge

A. Total recirculation systemB. Partial recirculation systemC. Once-through system

* Alternative options.Ø Only applicable to ATEX Category 1 and 2 pumps configured for external seals flush supplies; on

ATEX Category 2 pumps configured for internal seals flush supplies, the seals flush supplies are provided internally from the sealing liquid ring.

† Mandatory safety device on ATEX Category 1 and optional safety device on ATEX Category 2 pumps configured for external seals flush supplies where the seals flush supplies are not provided from a sealing liquid reservoir.

§ Mandatory safety devices on ATEX Category 1 and 2 pumps configured for external seals flush supplies.

# There are two seals flush pipelines: one for each seal in the pump.‡ On ATEX Category 1 and 2 pumps configured for external seals flush supplies fitted with total and

partial recirculation systems, this is an optional safety device if the seals flush supplies are provided from the sealing liquid reservoir.

¤ Mandatory safety device on ATEX Category 1 pumps and ATEX Category 2 pumps which use a sealing liquid which has a boiling point higher than 100 oC and total recirculation systems.


INST

ALLA

TIO


3.5.2 Total recirculation sealing liquid and seals flush supply system

A total recirculation system minimizes waste sealing liquid from the pump. Such a system may be particularly effective when used in a solvent removal or drying process, where process vapours are condensed inside the pump; the sealing liquid used can be the same as the condensed process vapours. In this configuration a loss of cooling liquid to the heat exchanger could cause the service liquid temperature and hence any contact surfaces to exceed the maximum allowable surface temperature. A temperature probe is therefore always fitted and should be set to trip the pump at 70°C.

Refer to Figure 1, detail A. The sealing liquid discharged at the pump outlet is separated from the pumped gases and vapours in the sealing liquid reservoir (14), connected to the pump process outlet pipeline (19).

The sealing liquid is then recirculated to the pump through a cooler (13). This removes the heat of compression and any latent heat of condensation from the recirculated sealing liquid.

On ATEX Category 1 and 2 pumps configured for external seals flush supplies, the sealing liquid reservoir (14) can be used to provide the seals flush supplies, or an external seals flush supply (1) can be used.

3.5.3 Partial recirculation sealing liquid and seals flush supply system

Refer to Figure 1, detail B. In a partial recirculation system, part of the sealing liquid discharged at the outlet is recirculated through the pump (8).

The sealing liquid discharged at the pump outlet enters the sealing liquid reservoir (14), connected to the pump process outlet pipeline (19).

Fresh sealing liquid is supplied to the reservoir (14), through the float operated fill/top-up valve (15).

A mixture of fresh and recovered sealing liquid from the reservoir is then supplied to the sealing ring in the pump (through the supply pipeline: 12, 11, 10, 9).

On ATEX Category 1 and 2 pumps configured for external seals flush supplies, the sealing liquid reservoir (14) can be used to provide the seals flush supplies, or an external seals flush supply (1) can be used.

3.5.4 Once-through sealing liquid and seals flush supply system

Note: Because of the potential environmental impacts, we do not recommend the use of once-through systems.

Refer to Figure 1, detail C. In once-through systems, the sealing liquid is supplied directly to the liquid ring in the pump (8), through a suitable supply pipeline (17, 16, 12, 26, 11, 10, 9).

The used sealing liquid is discharged with the pumped gases and vapours through the outlet pipeline (21) into your exhaust-extraction system.

On ATEX Category 1 and 2 pumps configured for external seals flush supplies, the sealing liquid supply (17) can be used to provide the seals flush supplies, or a separate external seals flush supply (1) can be used.

3.6 Unpack and inspect

1. Remove all packing materials and protective covers and check the pump. If the pump is damaged, notify your supplier and the carrier in writing within three days; state the Item Number of the pump together with your order number and your supplier's invoice number. Retain all packing materials for inspection. Do not use the pump if it is damaged.

2. Look at the pump identification plate (refer to the System Manual) and check that the pump is suitable for use in your system. If the pump is not suitable for use in your system, do not continue to install the pump: contact your Supplier or Edwards.

If the pump is not to be used immediately, replace the protective covers. Store the pump in suitable conditions, as described in Section 6.1.

A750-04-880 Issue F


INST

ALLA

TIO

N

3.7 Locate the pump

Ensure that the operating location is clean and free from debris and oil.

You must ensure that when the pump is in its required operating location, all of the mounting feet are in the same plane, flat on the mounting platform. The platform must be firm and level, with a maximum flatness deviation less than that specified in Table 4.

Do not use shims or spacers under the mounting feet to level the pump.

1. Use slings around the bearing housings or casing flanges (refer to the System Manual) to connect suitable lifting equipment to the pump.

2. Use the lifting equipment to move the pump to its required operating location on the mounting platform, then disconnect the lifting equipment.

3. Fit suitable bolts through the fixing bolt holes in the mounting feet, to secure the pump in position. Refer to the System Manual for the locations and sizes of the fixing holes.

3.8 Fit the motor or drive/transmission

3.8.1 Introduction

The pump is supplied as a bareshaft pump. You must therefore fit a suitable motor (refer to Section 3.8.2), or fit a suitable drive and transmission (refer to Section 3.8.3).

3.8.2 Fit a motor

Fit your motor to the pump as specified in the manufacturer’s manual supplied with your motor. Ensure that the motor is suitable for use with the pump.

WARNING

Use suitable lifting equipment to move the pump, as described below. If you do not, you can injure yourself or damage the pump. Refer to the System Manual for the mass of the pump.

WARNING

On ATEX Category 1, 2 and 3 pumps, your motor must comply with the requirements of the ATEX Directive (94/9/EC). If it does not, the external ATEX certification will not be valid.


INST

ALLA

TIO


3.8.3 Fit a drive and transmission

You can use a coupling or a belt drive and transmission system to connect your drive to the pump.

Connect the components of the drive and transmission system to the pump drive shaft as described in the manufacturer’s instructions supplied with the components.

3.9 Connect the pump to earth (ground)

The pump is supplied with an earth (ground) stud fitted. You must connect this stud to a suitable earth (ground) to prevent static electrical discharges during operation.

Refer to the System Manual for the size and location of the earth (ground) stud on the pump.

WARNING

On ATEX Category 1, 2 and 3 pumps, your drive and transmission must comply with the requirements of the applicable ATEX Directives (94/9/EC and 99/92/EC). If it does not, the external ATEX certification will not be valid.

WARNING

Your drive and transmission system design must ensure that the maximum pump rotational speed specified in Section 2.3 cannot be exceeded.

WARNING

You must fit suitable guards to protect people from rotating/moving parts.

WARNING

You must connect the pump earth (ground) stud, to prevent static electrical discharges. Such discharges are potential ignition sources.

A750-04-880 Issue F


INST

ALLA

TIO

N

3.10 Connect the sealing liquid and seals flush pipelines

Connect the sealing liquid and seals flush system pipelines to the pump in accordance with the requirements shown in the corresponding detail A, B or C of Figure 1.

Note that:

On ATEX Category 2 pumps configured for internal seals flush supplies or ATEX Category 3 pumps, you must connect a sealing liquid supply pipeline to the pump.

On ATEX Category 1 and 2 pumps configured for external seals flush supplies, you must connect a sealing liquid supply pipeline and seals flush liquid supply pipelines to the pump.

Refer to the System Manual for the sizes and locations of the sealing liquid and seals flush supply and drain ports.

3.11 Connect the pump inlet and outlet

3.11.1 Introduction

Take note of the following when you connect the pump process inlet and outlet:

For optimum pumping speeds, ensure that the pipeline connected to the process inlet is as short as possible.

The pipelines must have an internal diameter not less than the pump inlet/outlet diameter.

Support the pipelines to prevent loading of the inlet/outlet joints on the pump. The loads on the inlet and outlet must not exceed the maximum loads specified in Table 14.

Use a suitable inlet trap or filter to prevent the entry into the pump of particles larger than those specified in Table 2.

The inlet and outlet seals used must be compatible with the sealing fluid used, with the substances pumped, and with the process/operating conditions.

3.12 Connect the process inlet

Use a suitable gasket as a seal and connect the pipeline from your vacuum system to the process inlet on the pump.

The gasket you use must be made of a material which is compatible with the process.

WARNING

Edwards cast iron pumps are treated with a corrosion inhibitor. To avoid contamination flush with a suitable fluid.

WARNING

On an ATEX Category 2 pump configured for internal seals flush supplies and on an ATEX Category 3 pump, your system design must ensure that the sealing liquid supply cannot be interrupted when the pump is operating

WARNING

On ATEX Category 1 and 2 pumps configured for external seals flush supplies, your system design must ensure that the sealing liquid supply and the seals flush liquid supplies to the pump seals cannot be interrupted when the pump is operating.


INST

ALLA

TIO


3.12.1 Connect the process outlet

CAUTIONEnsure that the maximum outlet pressure specified in Section 2.3 cannot be exceeded. If it is, the drive or motor will trip and the pump will stop.

Use a suitable gasket as a seal and connect your outlet pipeline to the process outlet on the pump or on the sealing liquid supply system (see Figure 1).

The gasket you use must be made of a material which is compatible with the process.

3.13 Fit and connect the temperature transmitter (if necessary): ATEX Category 1 and 2 pumps

Note: You only need to fit a temperature transmitter to ATEX Category 2 pumps which are used with a sealing liquid which has a boiling point higher than 100 oC or is used in a total recirculation system. Refer to Section 3.5.2.

Fit and connect your temperature transmitter (not supplied) as described below. Refer to the general assembly drawings in the documentation pack supplied with your pump, for the location of the temperature transmitter port. Also refer to the instructions supplied with the temperature transmitter.

1. Remove the blanking plug (if fitted) from the temperature transmitter port on the pump.

2. Fit the temperature transmitter to the temperature transmitter port.

3. Connect the outputs of the temperature transmitter to your ATEX control circuit: refer to Section 3.1.2.

3.14 Connect the electrical supply to the motor

If you have fitted a motor to the pump (as described in Section 3.8.2) connect the electrical supply to the motor in accordance with the manufacturer’s instructions.

WARNING

Your design must prevent the emission of dangerous gases and vapours into the surrounding atmosphere.

WARNING

You must fit the temperature transmitter and connect it to the ATEX safety control circuit as described below. If you do not, the ATEX certification of the pump will not be valid

WARNING

Ensure that your electrical connections comply with all applicable local and national safety standards.

A750-04-880 Issue F


INST

ALLA

TIO

N

3.15 Check the direction of pump rotation

Check the direction of rotation of the pump as follows:

1. Edwards preferred method would be to visibly check the fan on the motor for direction of rotation. If this is not possible, temporarily remove any guard over the drive coupling or belt.

2. Observe the pump drive shaft while you start up the pump (refer to Section 4.2), then shut down the pump (refer to Section 4.4) after a few seconds.

3. Check that the pump drive shaft rotated correctly in the direction shown by the arrow on the pump.

4. If the direction of rotation was incorrect:

If you have fitted a drive and transmission system: check the drive and transmission system and reconfigure in accordance with the manufacturer’s instructions.

Perform the direction of rotation check from Step 2 again, to ensure that the pump now rotates in the correct direction.

5. If you have removed the guard over the drive coupling or belt (as in Step 1 above), refit the guard.

3.16 Check the leak tightness of the system


Check the leak tightness of the system and seal any leaks found after you have installed the pump, to prevent leakage of substances out of the system and leakage of air into the system:

For ATEX Category 1, 2 or 3 pumps, the system must be leak tight to limit any air leakage into the system to a level which obviates the risk of fire or explosion.

WARNING

Ensure that the pump rotates in the correct direction. If it does not, the pump and your vacuum system can become pressurised when you operate the pump.

WARNING

If you remove a guard during the following procedure, ensure that you do not come into contact with the shaft, the coupling/belt or the drive system when you operate the pump. If you do, you may be injured by the rotating components.

WARNING

Do not continue to operate the pump without sealing liquid in the pump. If you do, there may be a risk of damage to the pump.

WARNING

Ensure that the system is leak tight. If you do not, there will be a risk of explosion during operation.


INST

ALLA

TIO


3.16.2 Use of flammable sealing/seals flush liquids: ATEX Category 1, 2 and 3 pumps

Note: The acceptable pressure rise limit depends on your application. Contact Edwards for advice.

If you use a flammable sealing/seals flush liquid (see Section 3.3), you must ensure that the system is sufficiently leak tight, otherwise there will be a risk of explosion during pump operation.

Carry out the pressure rise test as follows:

1. Evacuate the process system to a pressure just lower than the normal operating pressure.

2. Isolate the process system from the pump, as close as possible to the pump process inlet.

3. Record the process system pressure over a fixed time.

4. If the pressure rise exceeds the acceptable limit for your system, identify and seal the leaks into the system, then repeat the test to ensure that the system is now leak tight.

If you are unable to perform a pressure rise test, your system must be configured to perform continuous oxygen monitoring: see Section 3.4.2.

A750-04-880 Issue F




OPER

ATIO


4 OPERATIONNote: The procedures in the following sections assume that your sealing liquid supply system is as shown in

Figure 1, detail A, B or C.

4.1 General operation safety

Do not expose any part of your body to vacuum.

Do not operate the pump with the process inlet or outlet open to the atmosphere.

Do not operate the pump without sealing liquid in the pump.

During operation, prevent accidental contact with the hot pump. Note that if you use hot sealing liquid (up to 70 oC), the temperatures of the pump process outlet and seal surfaces will be higher than the temperature of the sealing liquid supply.

Do not continue to operate the pump under cavitation conditions. If you do, the pump can be severely damaged (see Section 4.3).

Never disconnect any of the connecting pipelines (for example, the sealing liquid supply pipeline) when the pump is operating.

Where necessary, wear ear defenders. The pump can be noisy during operation (refer to Section 2.4).

4.2 Start-up

1. Refer to Figure 1, detail A, B or C. Open the sealing liquid supply valve (16) and the priming/drain valve (7). Wait until liquid flows from the priming/drain valve (7). The pump is now primed. Close sealing liquid supply valve (16) and then close the priming/drain valve (7).

2. Ensure that all isolation-valves (if fitted) in the process outlet pipeline are open.

3. Ensure that the flow regulating valve (12) is closed.

4. On ATEX Category 1 and 2 pumps configured for external seals flush supplies only: open the seals flush supply valve (2).

5. Start the pump.

6. Open any isolation-valves (if fitted) in the process inlet pipelines.

WARNING

Obey the safety instructions and precautions listed below. If you do not, there may be a risk of injury or death to people, or damage to the pump.

WARNING

Do not operate the pump without sealing liquid in the pump. If you do, there may be a risk of explosion.

WARNING

Do not start the pump full of water as this could damage the pump.

A750-04-880 Issue F


OPER

ATIO

N

7. Slowly open the flow regulating valve (12) until the required sealing liquid flow rate is obtained. Refer to Tables 6 and 7. Edwards recommend that a flow meter is installed.

4.3 Cavitation and fluid hammer

Under cavitation conditions, the pump will be unusually noisy during operation. Cavitation conditions occur when the process inlet pressure is close to the vapour pressure of the sealing liquid (see Section 2.6), and can result from:

Operation of the pump with an insufficient non-condensable gas load. (For example, operation of a pump which is over-sized for the application, or operation of the pump when an isolation valve in the process inlet pipeline is closed).

Operation of the pump with insufficient sealing liquid in the pump.

Operation of the pump with the sealing liquid supply temperature too high.

However, the pump may also be unusually noisy during operation due to fluid hammer. Fluid hammer is a pressure surge or wave resulting when a fluid in motion is forced to stop or change direction suddenly. This can occur when the flow rate of sealing liquid into the pump is too high.

Refer to Figure 1. If the pump is unusually noisy during operation, slowly close the sealing liquid supply flow regulating valve (12):

If the pump quietens down, the noise was due to fluid hammer. You can now continue to operate the pump as normal.

If the pump continues to operate noisily, or if the noise level increases, the pump is operating under cavitation conditions:

Immediately shut down the pump (refer to Section 4.4). Do not continue to operate the pump, or it may be severely damaged.

4.4 Shut-down

1. Refer to Figure 1. Fully close the sealing liquid supply valve (16).

2. Close any isolation valves in the process inlet pipeline.

3. Immediately stop the pump.

4. Close any isolation valves in the process outlet pipeline.

5. On ATEX Category 1 and 2 pumps configured for external seals flush supplies only: close the seals flush supply valve (2).

WARNING

Do not operate the pump without sealing liquid in the pump. If you do, there may be a risk of explosion.

WARNING

Ensure that it is safe to shut down the pump before you use the following procedure.


MAIN

TEN

AN

CE

A750-04-880 Issue F

5 MAINTENANCE

5.1 Safety information

A suitably trained and supervised technician must maintain the pump. Obey your local and national safety requirements.

Ensure that the maintenance technician is familiar with the safety procedures which relate to the sealing/seals flush liquid(s) and the products processed by the pumping-system.

Allow the pump to cool to a safe temperature before you start maintenance work.

Isolate the pump and other components in the pumping system from the drive system so that they can not be operated accidentally.

Recheck the pump rotation direction (see Section 3.15) if the electrical supply or the drive and transmission system has been disconnected/reconnected.

Do not reuse seals if they are damaged.

The pump and sealing/seals flush liquid(s) will be contaminated with the materials that have been pumped during operation. Ensure that the pump is decontaminated before maintenance and that you take adequate precautions to protect people from the effects of dangerous substances if contamination has occurred.

Do not touch or inhale the thermal breakdown products of fluorinated materials which may be present if the pump has been heated to 260 oC and above. These breakdown products are very dangerous. Fluorinated materials in the pump may include greases and seals. The pump may have overheated if it was misused, if it malfunctioned or if it was in a fire. Edwards Material Safety Data Sheets for fluorinated materials used in the pump are available on request: contact your supplier or Edwards.

If the pump has been used with a water-based sealing liquid, ensure that you take suitable precautions against any harmful bacteria which may be inside the pump or sealing liquid supply system.

Leak-test the system after maintenance work is complete if you have connected or disconnected any process inlet or outlet joints; seal any leaks found.

5.2 Maintenance plan

The plan in Table 15 details the maintenance operations required to maintain the pump in normal operation. Instructions for each operation are given in the section shown.

On ATEX Category 1, 2 and 3 pumps, you must maintain the pump in accordance with (or more frequently than) the frequencies specified in Table 15.

When you maintain the pump, use Edwards spares: refer to Section 7.3.

WARNING

Obey the safety instructions given below and take note of appropriate precautions. If you do not, you can cause injury to people and damage to equipment.

WARNING

On ATEX Category 1, 2 and 3 pumps, you must maintain the pump using the schedule given in Table 15, and as described in Sections 5.3 to 5.7 of this manual for the ATEX certification to remain valid.

A750-04-880 Issue F


MAIN

TEN

AN

CE

5.3 Inspect the pipelines and connections

Note: Where possible, we recommend that you investigate the cause of any damage or corrosion, and implement corrective measures to prevent any future damage of components.

Use the following procedure to inspect the pipelines and connections:

1. Inspect all of the process inlet pipelines and connections and check that they are not damaged or corroded and that they do not leak. Repair or replace any damaged or corroded component and seal any leak found.

2. Inspect all of the process outlet pipelines and connections and check that they are not damaged or corroded and that they do not leak. Repair or replace any damaged or corroded component and seal any leak found.

3. Inspect all of the electrical cables connected to the pump and check that they are not damaged and have not overheated. Repair or replace any damaged or overheated cable.

4. Check that all electrical connections to the pump are secure. Tighten any loose connections.

5. Inspect all of the sealing liquid and seals flush liquid supply system components, pipelines and connections and check that they are not damaged or corroded and that they do not leak.

5.4 Check the ATEX safety devices for correct operation: ATEX Category 1 and 2 pumps

You must regularly check that the ATEX safety devices in your system operate correctly:

1. On pumps configured for external seals flush supplies only: check that the flow and pressure switches in your seal flush supply pipelines or reservoir level switch (see Section 3.1.2) operate correctly to shut down your system.

2. If your system incorporates a temperature transmitter, check that the temperature transmitter operates correctly to shut down your system when the temperature of the sealing liquid ring in the pump is too high.

Table 15 - Maintenance plan

Operation Frequency Refer to Section

Inspect the pipelines and connections Weekly 5.3

Check the ATEX safety devices for correct operation * Monthly 5.4

Calibrate the ATEX safety devices * Yearly 5.5

Replenish the bearings with grease Every 2000 hours 5.6

Overhaul the pump 3 Yearly 5.7

* ATEX Category 1 and 2 pumps only

WARNING

You must regularly check the ATEX safety devices for correct operation as described below. If you do not, the ATEX certification of your system will not be valid.


MAIN

TEN

AN

CE

A750-04-880 Issue F

5.5 Calibrate the ATEX safety devices: ATEX Category 1 and 2 pumps

You must calibrate the ATEX safety devices in your system every year, to ensure that the devices will operate correctly. Calibrate the devices as described in the manufacturer’s instructions supplied with the devices.

5.6 Replenish the bearings with grease

For each bearing on the pump:

1. Use a suitable filling device to replenish the bearings with new grease. (As you force in new grease, old grease and/or excess grease will be forced out of a bearing vent next to the grease point.)

2. Wipe away any grease from the bearing grease point and the vent.

You must use a high quality lithium-based grease according to DIN51825 K2K-30. Refer to the documentation pack supplied with your pump for the locations of the grease points and bearing vents on the pump.

5.7 Overhaul the pump

ATEX Category 1, 2 and 3 pumps must be overhauled every three years, and the bearings in the pump must be replaced as part of the overhaul.

Pump overhaul must be carried out at a Edwards Service Centre. Contact your supplier or your nearest Edwards company to arrange for the overhaul.

5.8 Fault finding

A guide to fault conditions and their possible causes is provided in Table 16 to assist you in basic fault finding.

If you are unable to rectify a fault when you use this guide, call your supplier or your nearest Edwards Service Centre for advice.

WARNING

You must regularly check the ATEX safety devices for correct operation as described below. If you do not, the ATEX certification of your system will not be valid

A750-04-880 Issue F


MAIN

TEN

AN

CE

Table 16 - Fault finding

Symptom Check Action

A drive protection device switches off your drive after switch-on, or a torque limiting device in your drive and transmission system trips.

Has the drive/transmission overloaded?

Reduce the flow rate of sealing liquid to the pump.

Is the outlet pressure too high? Reduce the outlet pressure.

Is the drive/transmission system damaged?

Inspect and repair or replace as necessary.

Excessive electrical current is drawn by your drive and transmission system during operation.

Are there deposits or particulates inside the pump?

Contact your supplier or Edwards to arrange for inspection and cleaning of the pump.

Has the drive/transmission overloaded?

Reduce the flow rate of sealing liquid to the pump.

Is the outlet pressure too high? Reduce the outlet pressure.

Is the drive/transmission system damaged?

Inspect and repair or replace as necessary.

Vacuum pumping performance is poor.

Is the sealing liquid supply inadequate, or is its temperature too high?

Check that the sealing liquid supply is as specified in Section 2.6.

Is the direction of pump rotation incorrect?

Check the direction of pump rotation and correct as necessary: refer to Section 3.15.

Is there a leak in the process inlet pipeline?

Leak test the inlet pipeline and seal any leaks found (see Section 3.16).

The pump is noisy during operation.

Is the pump operating under cavitation conditions?

Check that any isolation valves in the process inlet pipelines are open.

There may be a loss of sealing liquid. On ATEX Category 2 pumps configured for external seals flush supplies, check for correct operation of the flow switches in your seals flush supply pipelines, and on all ATEX category 2 pumps, check for correct operation of the temperature transmitter (if fitted, see Section 3.1.2), which should have operated to shut down the pump in these conditions.

Is the flow of sealing liquid to the pump too high?

Check that the sealing liquid supply is as specified in Section 2.6. If necessary, reduce the flow rate of the sealing liquid into the pump (see Section 4.3).

Is the pump damaged or in need of repair?

Contact your supplier or Edwards to arrange for pump inspection.

- - If you have made the checks/actions as described above and you still cannot identify the cause of a fault, or if you cannot rectify a fault, contact your supplier or Edwards for advice.


STO

RAG

E AN

D D

ISPOSA

LA750-04-880 Issue F

6 STORAGE AND DISPOSAL

6.1 Storage

6.1.1 Preparation

Use the following procedure to remove the pump from your system in preparation for storage:

1. Shut-down the pump as described in Section 4.4.

2. Where necessary, disconnect the drive and transmission system from the pump drive shaft: refer to the manufacturer’s instructions supplied with your transmission system.

3. Purge your vacuum system and the pump with dry nitrogen and disconnect the pump from your vacuum and discharge system.

4. Place and secure protective covers over the pump process inlet, outlet and sealing liquid connections, and (on ATEX Category 1 and 2 pumps configured for external seals flush supplies only) over the seals flush connections.

5. Use suitable lifting equipment to move the pump to its storage area: refer to Section 3.7.

6. Store the pump as described in Section 6.1.2 or 6.1.3.

6.1.2 Short-term storage

If the pump is to be stored for no longer than two months:

Store the pump indoors, in cool, dry conditions, at an ambient temperature of not less than 5 oC.

Every 10 days or less, turn the pump drive shaft through three or four revolutions, to turn the pump and prevent seizure.

When required for use, prepare and install the pump as described in Section 3.

WARNING

If the pump has been used with a water-based sealing liquid, harmful bacteria may have propagated inside the pump. Ensure that you wear the appropriate Personal Protective Equipment (PPE) when you prepare the pump for storage

A750-04-880 Issue F


STO

RAG

E AN

D D

ISPOSA

L

6.1.3 Long-term storage

If the pump is to be stored for two months or more:

1. Drain the sealing liquid from the pump.

2. Remove the protective covers from the process inlet and outlet.

3. Spray a suitable corrosion inhibitor through the process inlet and/or the process outlet, onto the internal surfaces of the pump.

4. Refit the protective covers to the process inlet and outlet.

5. Cover the pump with plastic sheet or PVC film. Place suitable anti-condensation materials (such as desiccants) inside the sheet/film.

We then recommend that, every 30 days or less:

You spray a suitable corrosion inhibitor through the process inlet and/or the process outlet, onto the internal surfaces of the pump.

You turn the drive shaft through three or four revolutions, to turn the pump and prevent seizure.

When required for use:

Flush the pump with a suitable cleaning solution, to remove any corrosion inhibitor from the pump.

Prepare and install the pump as described in Section 3.

6.2 Disposal

Safely dispose of the pump, sealing/seals flush liquid and any components in accordance with all local and national safety and environmental requirements.

WARNING

Ensure that you wear the appropriate Personal Protective Equipment (PPE) when you drain the pump, if the contaminated sealing liquid is classified as hazardous, or if the pump has been used with a water-based sealing liquid (in which case, harmful bacteria may have propagated inside the pump)

WARNING

Ensure that you wear the appropriate Personal Protective Equipment (PPE) when you handle sealing liquid or components which have been contaminated with dangerous substances, or handle used water-based sealing liquid (which may contain harmful bacteria) or components contaminated with this sealing liquid


STO

RAG

E AN

D D

ISPOSA

LA750-04-880 Issue F

Take particular care with the following:

Components that have been contaminated with dangerous substances.

Sealing/seals flush liquid that has been contaminated with dangerous substances.

Used water-based sealing liquid, or components contaminated with used water-based sealing liquid.

A750-04-880 Issue F




SERVIC

E AN

D SPA

RES

A750-04-880 Issue F

7 SERVICE AND SPARES

7.1 Introduction

Edwards products, spares and accessories are available from Edwards companies in Belgium, Brazil, China, France, Germany, Israel, Italy, Japan, Korea, Singapore, United Kingdom, U.S.A and a world-wide network of distributors. The majority of these centres employ Service Engineers who have undergone comprehensive Edwards training courses.

Order spare parts and accessories from your nearest Edwards company or distributor. When you order, state for each part required:

Model and Item Number of your equipment

Serial number

Item Number and description of part.

7.2 Service

Edwards products are supported by a world-wide network of Edwards Service Centres. Each Service Centre offers a wide range of options including: equipment decontamination; service exchange; repair; rebuild and testing to factory specifications. Equipment which has been serviced, repaired or rebuilt is returned with a full warranty.

Your local Service Centre can also provide Edwards engineers to support on-site maintenance, service or repair of your equipment.

For more information about service options, contact your nearest Service Centre or other Edwards company.

7.3 Spares

Refer to the documentation pack supplied with your pump for details of the spares available.

A750-04-880 Issue F




SAFET

Y RELA

TED

PARTS O

F CO

NTRO

L SYSTEM

SA750-04-880 Issue F

8 SAFETY RELATED PARTS OF CONTROL SYSTEMS

8.1 Introduction

Your safety-related control system must comply with all relevant European Directives and harmonised standards. The functional safety of your safety-related control system must meet the minimum requirements for the combined equipment group and category, and must perform the functions as described in previous sections of this manual.

8.2 Manual reset

The pump must not be able to automatically restart after a condition which has caused a trip clears.

Your control circuit must incorporate a manual reset device which you must use to manually reset the system in order to start it again, after a trip has occurred.

A750-04-880 Issue F



vacuum pump

Documents