Edwards ATEX 1 EHR User manual

A750-04-880
Issue F Original
Instruction Manual
ATEX Category 1, 2 and 3 EHR
and 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:
Vacuumpumps
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 Issue B
C. Bailey, Global Technical Manager Systems Engineering
This product has been manufactured under a quality system registered to ISO9001

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 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:
Vacuumpumps
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 2 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
P200-05-500 Issue B
C. Bailey, Global Technical Manager Systems Engineering
This product has been manufactured under a quality system registered to ISO9001

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 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:
Vacuumpumps
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 3 G c IIC T4 Internal
II 3 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
P200-05-520 Issue B
C. Bailey, Global Technical Manager Systems Engineering
This product has been manufactured under a quality system registered to ISO9001

© Edwards Limited 2012. All rights reserved. Page i
Edwards 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 ................................................................................................... 1
1.2 The liquid ring pump .................................................................................................... 2
1.2.1 ATEX Category 1, 2 and 3 pumps ...................................................................................... 2
1.3 ATEX Directive: 94/9/EC (Europe): ATEX Category 1, 2 and 3 pumps only ..................................... 3
1.3.1 Introduction ..............................................................................................................3
1.3.2 Temperature classification ............................................................................................. 3
1.3.3 Normal operation ........................................................................................................ 5
1.3.4 Abnormal operation ..................................................................................................... 5
1.4 Applications ............................................................................................................... 6
2 TECHNICAL DATA .................................................................................7
2.1 Operating and storage conditions ..................................................................................... 7
2.2 Mechanical data .......................................................................................................... 7
2.3 Performance .............................................................................................................. 7
2.4 Noise and vibration data ...............................................................................................10
2.5 Lubrication Data ........................................................................................................10
2.6 Sealing liquid and seals flush liquid supplies .......................................................................10
2.6.1 General requirements ..................................................................................................10
2.6.2 Use of water based sealing liquid/seals flush liquid ..............................................................11
2.7 Materials of construction ..............................................................................................12
3 INSTALLATION ................................................................................... 15
3.1 Installation requirements ..............................................................................................15
3.1.1 General requirements ..................................................................................................15
3.1.2 ATEX specific requirements: ATEX Category 1, 2 and 3 pumps ..................................................15
3.2 Safety .....................................................................................................................16
3.3 Use of flammable sealing/seals flush liquids: ATEX Category 1, 2 and 3 pumps .............................17
3.4 Pumping system design ................................................................................................17
3.4.1 General ...................................................................................................................17
3.4.2 Oxygen monitoring: ATEX Category 2 and 3 pumps only .........................................................17
3.5 Sealing liquid and seals flush supply system design ...............................................................18
3.5.1 Introduction .............................................................................................................18
3.5.2 Total recirculation sealing liquid and seals flush supply system ................................................21
3.5.3 Partial recirculation sealing liquid and seals flush supply system ..............................................21
3.5.4 Once-through sealing liquid and seals flush supply system ......................................................21
3.6 Unpack and inspect .....................................................................................................21
3.7 Locate the pump ........................................................................................................22
3.8 Fit the motor or drive/transmission .................................................................................22
3.8.1 Introduction .............................................................................................................22
3.8.2 Fit a motor ...............................................................................................................22
3.8.3 Fit a drive and transmission ...........................................................................................23
3.9 Connect the pump to earth (ground) ................................................................................23
3.10 Connect the sealing liquid and seals flush pipelines ..............................................................24
3.11 Connect the pump inlet and outlet ..................................................................................24
3.11.1 Introduction .............................................................................................................24
3.12 Connect the process inlet .............................................................................................24
3.12.1 Connect the process outlet ...........................................................................................25
3.13 Fit and connect the temperature transmitter (if necessary): ATEX Category 1 and 2 pumps ..............25
3.14 Connect the electrical supply to the motor ........................................................................25
3.15 Check the direction of pump rotation ...............................................................................26
3.16 Check the leak tightness of the system .............................................................................26
3.16.1 General requirements ..................................................................................................26
3.16.2 Use of flammable sealing/seals flush liquids: ATEX Category 1, 2 and 3 pumps .............................27
gea/00214/07/12

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 ..............................................................................................29
4.2 Start-up ..................................................................................................................29
4.3 Cavitation and fluid hammer .........................................................................................30
4.4 Shut-down ................................................................................................................30
5 MAINTENANCE ................................................................................... 31
5.1 Safety information ......................................................................................................31
5.2 Maintenance plan .......................................................................................................31
5.3 Inspect the pipelines and connections ..............................................................................32
5.4 Check the ATEX safety devices for correct operation: ATEX Category 1 and 2 pumps ......................32
5.5 Calibrate the ATEX safety devices: ATEX Category 1 and 2 pumps .............................................33
5.6 Replenish the bearings with grease ..................................................................................33
5.7 Overhaul the pump .....................................................................................................33
5.8 Fault finding .............................................................................................................33
6 STORAGE AND DISPOSAL ....................................................................... 35
6.1 Storage ...................................................................................................................35
6.1.1 Preparation ..............................................................................................................35
6.1.2 Short-term storage .....................................................................................................35
6.1.3 Long-term storage ......................................................................................................36
6.2 Disposal ...................................................................................................................36
7 SERVICE AND SPARES ........................................................................... 39
7.1 Introduction .............................................................................................................39
7.2 Service ....................................................................................................................39
7.3 Spares .....................................................................................................................39
8 SAFETY RELATED PARTS OF CONTROL SYSTEMS ............................................ 41
8.1 Introduction .............................................................................................................41
8.2 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 ...................19
1 Recommended sealing liquid and seals flush supply system configurations: sheet 2 of 2 ...................20

© Edwards Limited 2012. All rights reserved. Page iii
Edwards 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 .............................................................................. 4
2 Maximum particle sizes ................................................................................................. 6
3 Operating and storage conditions ..................................................................................... 7
4 Mechanical data .......................................................................................................... 7
5 Performance Data ....................................................................................................... 7
6 Typical performance data and sealing liquid flow rates: single stage pumps .................................. 8
7 Typical performance data and sealing liquid flow rates: two stage pumps .................................... 9
8 Noise data ................................................................................................................10
9 Vibration data ...........................................................................................................10
10 Sealing/seals flush liquid supply data ...............................................................................11
11 External seals flush liquid flow rate .................................................................................12
12 Materials of construction: process contact parts: EHR (S/C/D) pumps ........................................12
13 Materials of construction: process contact parts: SHR (S/C/D) pumps .........................................13
14 Maximum radial shaft loads and maximum inlet/outlet loads and moments .................................16
15 Maintenance plan .......................................................................................................32
16 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 1
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
A750-04-880 Issue F
1Introduction
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.
CAUTION
Cautions 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 ATEX Category 2 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 1, without the need
for protective devices such as flame arrestors.
The ATEX Category 3 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 2, 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 gasesand 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.)

© Edwards Limited 2012. All rights reserved. Page 3
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
A750-04-880 Issue F
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:
ATEX Category 2 pumps are fitted with an ATEX rating label containing the following information:
ATEX Category 3 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 Internal
II 2 G c, IIC T4 External
II 2 G c, IIC T4 Internal
II 2 G c, IIC T4 External
II 3 G c, IIC T4 Internal
II 3 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
2 Equipment category 2
3 Equipment category 3
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
Page 4 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
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.
Liquid Maximum 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!

© Edwards Limited 2012. All rights reserved. Page 5
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Introduction
A750-04-880 Issue F
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
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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) that
can be allowed to enter the pump
Metallic
particles Non-metallic particles
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 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/D 0.05 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

© Edwards Limited 2012. All rights reserved. Page 7
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TECHNICAL DATA
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 5to 7applies 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 6and 7may 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
Dimensions
Mass
Process and sealing liquid connections
Ingress Protection (IP) rating
Refer to your System Manual
Refer to your System Manual
Refer to your System Manual
IP54
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 6and 7
Maximum outlet pressure 1.1 bar absolute, 1.1 x 105Pa
Shaft power See Tables 6and 7

A750-04-880 Issue F
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TECHNICAL DATA
Table 6 - Typical performance data and sealing liquid flow rates: single stage pumps
Pump(s) Speed *
r min-1 MP kW †
Typical performance § Maximum
sealing
liquid
flow rate
m3h-1
100 mbara
1.0 x 104Pa 200 mbara
2.0 x 104Pa 800 mbara 8.0 x 104Pa
m3h-1 kW m3h-1 kW m3h-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 (m3h-1) and shaft power (kW) for the
specified inlet pressures (100 mbara, 200 mbara and 800 mbara).

© Edwards Limited 2012. All rights reserved. Page 9
Edwards and the Edwards logo are trademarks of Edwards Limited.
TECHNICAL DATA
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
sealing
liquid
flow rate
m3h-1
33 mbara
3.3 x 103Pa 100 mbara
1.0 x 104Pa 200 mbar 2.0 x 104Pa
m3h-1 kW m3h-1 kW m3h-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.
†Motorpower.
§ Performance specifies the suction capacity (m3h-1) and shaft power (kW) for the
specified inlet pressures (33 mbara, 100 mbara and 200 mbara).

A750-04-880 Issue F
Page 10 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
TECHNICAL DATA
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.
Pump Typical 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 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/D ≤82 ± 3
SHR 21200S/C/D, 11500S/C/D, 21500S/C/D, 21850S/C/D ≤82 ± 3
SHR 12500S/C/D, 22500S/C/D ≤82 ± 3
Pump Vibration 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 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/D 4.5
SHR 21200S/C/D, 11500S/C/D, 21500S/C/D, 21850S/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.

© Edwards Limited 2012. All rights reserved. Page 11
Edwards and the Edwards logo are trademarks of Edwards Limited.
TECHNICAL DATA
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 103Pa)
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 103Pa
Sealing liquid/seals flush liquid * auto-ignition temperature > 160 oC
Sealing liquid
Maximum viscosity † 1 x 10-5 m2s-1
Maximum density † 1200 kg m-3
Minimum conductivity 1000 μS m-1
Maximum flow rate See Tables 6and 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
Page 12 © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
TECHNICAL DATA
2.7 Materials of construction
Table 11 - External seals flush liquid flow rate
Pump Nominal flow rate to both seals
1 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 seals
1 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 1300S/C/D, 2300S/C/D, 1400S/C/D, 2400S/C/D 14.0 11.5
SHR 1750S/C/D, 2750S/C/D, 1950S/C/D, 2950S/C/D 17.0 14.5
SHR 21200S/C/D, 11500S/C/D, 21500S/C/D, 21850S/C/D 22.0 20.0
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 mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316
Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless 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
Ball
Stainless steel 316
PTFE
Ball
Stainless steel 316
PTFE
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
Distance piece Stainless steel 316 Stainless steel 316
Shaft seals
- Faces
- Elastomers
- Metal parts
- Springs
Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316
Single mechanical
Silicon carbide vs carbon
FPM
Stainless steel 316
Stainless steel 316
Fasteners Carbon steel / Stainless steel 316 Stainless steel 316
Gaskets Compressed fibre Compressed fibre