Edwards E2M40 User manual

ATEX Rotary Vane Pumps
INSTRUCTION MANUAL
A36418880_A Original instrucons
edwardsvacuum.com

CE Declaration of Conformity
P20050031A
The following product:
ATEX EM40/80 Pumps – Hydrocarbon Oil
Internal II 3 G Ex h IIC T4 Gc External II 2 G Ex h IIB T4 Gb
A364-18-993
E2M40 400V 3ph 50Hz Exdb IIB
A365-18-993
E2M80 400V 3ph 50Hz Exdb IIB
ATEX EM175/275 Pumps – Hydrocarbon Oil
Internal II 3 G Ex h IIC T3 Gc External II 2 G Ex h IIB T160 Gb
A366-18-993
E2M175 400V 3ph 50Hz Exdb IIB
A367-18-993
E2M275 400V 3ph 50Hz Exdb IIB
Is in conformity with the relevant requirements of European CE legislation:
2014/34/EU
ATEX directive on use in potentially explosive atmospheres
Intertek Testing and Certification Limited, notified body no. 0359
Tech File Ref: TCF218
2011/65/EU
Restriction of certain hazardous substances (RoHS) directive
as amended by Delegated Directive (EU) 2015/863
Based on the relevant requirements of harmonised standards:
EN 1012-2:1996 +A1:2009
Compressors and vacuum pumps. Safety requirements. Vacuum pumps
EN ISO 80079-36:2016
Explosive atmospheres – Part 36: Non-electrical equipment for explosive atmospheres.
Basic method and requirements
EN ISO 80079-37:2016
Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres --
Non-electrical type of protection constructional safety ''c'', control of ignition sources ''b'',
liquid immersion ''k''
Documentation Officer:
Jelena Havelkova, Spielberk Office Centre, Holandska 10, Brno, 63900 Czech Republic,

: [phone],

: [email protected]
This declaration, based on the requirements of the listed Directives and EN ISO/IEC 17050-1, covers all product
serial numbers from this date on: 1st November 2019
_____________________________________
Andries De Bock – Vice President Engineering
Industrial Vacuum Division
Qingdao
__________________________________
Bram Claes – General Manager
Qingdao
Edwards Ltd
Innovation Drive
Burgess Hill
West Sussex
RH15 9TW
UK

This product has been manufactured under a quality management system certified to ISO 9001:2015
Additional Legislation and Compliance Information
EU RoHS Directive: Material Exemption Information
This product is compliant with the following Annex III Exemptions:
•6(b) Lead as an alloying element in aluminium containing up to 0.4% by weight
•6(c) Copper alloy containing up to 4% lead by weight
Article 33 Declaration
This product does contain Candidate List Substances of Very High Concern above 0.1%ww by article as clarified under the
2015 European Court of Justice ruling in case C-106/14.
•Lead (Pb) added to the Candidate List June 2018
As indicated by the applied RoHS exemption(s) above this substance is present in certain aluminium/brass components.
Additional Information
The products listed are also in scope for and comply with the requirements of the following:
2012/19/EU
Directive on waste electrical and electronic equipment (WEEE)
材料成分声明
China Material Content Declaration
有害物质
Hazardous Substances
部件名称
Part name
铅
Lead
(Pb)
汞
Mercury
(Hg)
镉
Cadmium
(Cd)
六价铬
Hexavalent
Chromium
(Cr VI)
多溴联苯
Polybrominated
biphenyls
(PBB)
多溴二苯醚
Polybrominated
diphenyl ethers
(PBDE)
铸铝及铝合金制品
Aluminium alloys
X O O O O O
铜管管件
Brass pipe fitting
X O O O O O
铜接头
Brass connectors
X O O O O O
冷却系统
Cooling system
X O O O O O
O: 表示该有害物质在该部件的所有均质材料中的含量低于 GB/T 26572 标准规定的限量要求。
O: Indicates that the hazardous substance contained in all of the homogeneous materials for this part is below the limit
requirement in GB/T 26572.
X: 表示该有害物质在该部件的至少一种均质材料中的含量超出 GB/T26572 标准规定的限量要求。
X: Indicates that the hazardous substance contained in at least one of the homogeneous materials used for this part is
above the limit requirement of GB/T26572.

Copyright noce
©Edwards Limited 2019. All rights reserved.
Associated publicaons
Publicaon tle Publicaon number
Vacuum systems safety booklet P40040100
Brish Autoguard Samiex coupling installaon/maintenance
instrucons
Flameproof motor maintenance instrucons
Trademark credit
Edwards and the Edwards logo are trademarks of Edwards Limited, Innovaon Drive, Burgess
Hill, West Sussex RH15 9TW.
Disclaimer
The content of this manual may change from me to me without noce. We accept no
liability for any errors that may appear in this manual nor do we make any expressed or
implied warranes regarding the content. As far as praccal we have ensured that the
products have been designed and constructed to be safe and without risks when properly
installed and used in accordance with their operang instrucons.
We accept no liability for loss of prot, loss of market or any other indirect or consequenal
loss whatsoever.
Product warranty and limit of liability are dealt with in our standard terms and condions of
sale or negoated contract under which this document is supplied.
You must use this product as described in this manual. Read the manual before you install,
operate and maintain the product.
Numbering matrix
Page 2

Contents
1. Introducon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Scope and denions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 ATEX direcve implicaons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Descripon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 ATEX cercaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2. Normal operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. Abnormal operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4. Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Physical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.1 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.2 Mass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Operang condions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.4 Noise data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.5 Vibraon data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.6 Electrical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.6.1 Electrical data: three-phase pumps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5. Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Mechanical installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3 Electrical installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3.1 Check and congure the motor: three phase pumps. . . . . . . . . . . . . . . 15
5.3.2 Connect the pump to your electrical supply. . . . . . . . . . . . . . . . . . . . . . . 15
5.3.3 Connecon of addional thermal protecon devices. . . . . . . . . . . . . . . 16
5.3.4 Check the direcon of rotaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6. Operaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Pumping ammable/pyrophoric materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2 Gas purges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3 Manual reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1 Safety informaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2 Maintenance plan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.3 Control intervals of ATEX coupling insert (E2M40/80/175/275). . . . . . . . . . . . . . 20
8. Service and spares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Page 3

8.1 Return the equipment or components for service . . . . . . . . . . . . . . . . . . . . . . . . 21
Page 4

1. Introducon
1.1 Scope and denions
This manual provides installaon, operaon and maintenance instrucons for Group II
Category 2 ATEX pumps in respect to ignion sources external to the pump and Group II
Category 3 ATEX pumps in respect to ignion sources internal to the pump. You must use the
pumps as specied in this manual.
Read this manual before you install and operate your rotary vacuum pump. Important safety
informaon is highlighted as WARNING and CAUTION instrucons; you must obey these
instrucons. The use of WARNINGS and CAUTIONS is dened below.
WARNING:
Warnings are given where failure to observe the instrucon could result in injury or
death to people. The actual symbol shown varies according to the hazard.
CAUTION:
Cauons are given where failure to observe the instrucon could result in minor injury or
damage to the equipment, associated equipment or process.
The units used throughout this manual conform to the SI internaonal system of units of
measurement.
Note:
The content of this manual may change from me to me without noce. We accept no
liability for any errors that may appear in this manual, nor does it make any expressed or
implied warranes regarding the content. So far as is reasonably praccable we have
ensured that our products have been designed and constructed so as to be safe and without
risks when properly installed and used in accordance with our Operang Instrucons. We
accept no liability for loss of prot, loss of market or any other indirect or consequenal loss
whatsoever.
Product warranty and limit of liability are dealt with in our standard terms and condions of
sale or negoated contract under which this document is supplied.
1.2 ATEX direcve implicaons
This pump is designed to meet the requirements of Group II Category 2 equipment in
respect of potenal ignion sources external to the pump, and also Group II Category 3 in
respect to ignion sources internal to the pump. This classicaon is in accordance with
Direcve 2014/34/EU of the European Parliament and the Council of 26 February 2014 on
the harmonizaon of the law of the Member States relang to equipment and protecve
systems intended for use in potenally explosive atmosphere.
There is no potenal source of ignion within or external to the pump during normal
operaon but there may be potenal sources of ignion under condions of rare or
expected malfuncon as dened in the Direcve. As a result of this, it is necessary to
consider the potenal consequences of ignion sources occurring under rare or expected
malfuncon. (Ref ATEX137 1992/92/EC).
Page 5
A36418880_A - Introducon

When ammable materials are present within the equipment you must:
▪ Ensure the system is leak ght.
▪ Use an inert gas purge to dilute any ammable gases or vapours entering the
pump inlet, and/or use an inert gas purge to reduce the concentraon of
ammable gases or vapours in the pump and in the exhaust pipeline to less than
one quarter of the gases, published Lower Explosive Limits (LEL).
Refer to the safety booklet P40040100 (secon - Avoiding the ammable zone) for
details on methods to avoid the ammable zone.
Our pumps are not intended for use in explosive dust atmospheres.
WARNING:
The oil‑sealed vacuum pumps are supplied with a sealed Gas Ballast. Plugs have been
ed to prevent ammable atmospheres accidentally entering the pump. If the gas
ballast facility is required, a purge gas must be used. Failure to obey these instrucons
may cause harm, injury or death to persons.
For further informaon, contact us: refer to the addresses page at the end of this manual for
details of your nearest Edwards company.
1.3 Descripon
The Edwards range of rotary vacuum pumps are single or two‑stage oil sealed, sliding vane,
high vacuum pumps designed for reliable, long term operaon in both laboratory and
industrial environments.
The E2M175 and E2M275 pumps incorporate an inlet valve, which when the pump is
switched o seals the inlet and prevents back migraon of oil into system being evacuated.
The pump is designed to meet the requirements of Group II Category 2 equipment in respect
to ignion sources external to the pump.
The pump is ATEX Group II Category 3 cered in respect to ignion sources internal to the
pump.
The pump is intended for use in explosion groups IIB and IIC (internal only).
A four‑pole, three‑phase ATEX approved ameproof motor provides direct drive through an
ATEX cered exible coupling to the E2M40/80/175 and 275 pumps.
A plasc cooling fan is aached to the drive coupling on the E2M40/80 pumps. The
E2M175/275 are water‑cooled.
Lubricaon is provided by a sliding vane oil pump, which delivers pressurised oil to the
vacuum pumping mechanism.
An inert purge gas can be introduced into the pumping mechanism via the gas ballast inlet.
The nal stage of the pump will exhaust to atmospheric pressure and there is a start‑up and
shutdown period where the whole pump is briey operang at atmospheric pressure.
A surface temperature thermal snap switch is ed to the body of the E2M175 and 275
rotary vacuum pumps. If the pump temperature should rise due to a fault condion, the
thermal snap switch acvates and the pump is shut down.
The thermal snap switch must be connected to an intrinsically safe circuit suitable for the
classicaon of the hazardous zone in which the pump will be located. If this is not possible,
the circuit should be placed in a safe zone.
Page 6
A36418880_A - Introducon

1.4 ATEX cercaon
Table 1 ATEX cercaon
Pump type
ATEX cercaon
Internal External
E2M40, 80 II int 3 G Ex h IIC T4 Gc II ext 2 G Ex h IIB T4 Gb
E2M175, 275 II int 3 G Ex h IIC T3 Gc II ext 2 G Ex h IIB T160 Gb
The elements of this cercaon have the following meaning:
Equipment to be used in a potenally explosive atmosphere
II Equipment group II - non mining equipment
int or ext Internal or External of the pump
2 or 3 Equipment category 2 or 3
G Explosive atmosphere caused by gases, vapours or mists
Ex h Explosion protecon method
IIB or IIC Gas Groups IIB or IIC
T3, T4, T160 Temperature Rang, T3 (200 °C), T4 (135 °C), T160 (160 °C)
Gb or Gc EPL (Equipment Protecon Level)
Page 7
A36418880_A - Introducon

2. Normal operaon
Normal operaon of the rotary vane pumps is dened by this instrucon manual used in
conjuncon with the specic pump manual (A36404880 for E2M40/80 and A36604880 for
E2M175/275). Instrucons in this manual take precedence over those in the specic pump
manual. This means that:
▪ The pump is connected to the correct electrical supply as dened by the
instrucon manual.
▪The pump has the correct services as dened by the instrucon manual.
▪The pump addional protecon device (refer to Installaon on page 13) is
connected to a safety interlock circuit that will stop the pump when an unsafe
condion occurs.
In normal operaon the pump is safe for use in atmospheres containing gas groups IIB and
IIC depending on the class of motor ed.
Page 8
A36418880_A - Normal operaon

3. Abnormal operaon
The following usage of the equipment is prohibited:
▪ Use of the equipment in a zone with a higher ATEX category than that applied to
the equipment (for example, using category 2 equipment in a category 1 system).
▪ Use of the equipment as a posive pressure compressor.
▪ Use of the equipment whilst subjected to high back pressure (for example, as
caused by an exhaust line blockage).
▪Reverse rotaon of the pump.
▪Run the pump at a speed higher than the one specied in Mechanical data on
page 10.
▪Pumping of or use in the presence of potenally ammable or explosive dust
atmospheres.
▪Use in ambient condions other than those specied in Operang condions on
page 11.
▪Pumping of pyrophoric materials.
▪Pumping gases that cause the inlet pipeline or oil box to exceed a surface
temperature of 80 °C.
▪ Pumping of hydrocarbon oxides.
▪ Pumping of gases that tend to self decompose or are chemically unstable.
▪ Use with materials with auto ignion temperatures below the dened
temperature rang.
▪Operaon such that the pump inlet temperature falls below the dew point of a
ammable vapour. This could lead to condensate that can collect and lead to the
risk of corrosion or an ignion hazard.
▪Use with oxygen enriched atmospheres.
Page 9
A36418880_A - Abnormal operaon

4. Technical data
4.1 Physical data
4.1.1 Dimensions
The data in Table : Overall length on page 10 are typical values of the overall length of the
pump when ed with a ameproof motor. This is the only dimension that deviates from
the standard product.
Note:
Customers should be aware that there might be dierences in dimensions, terminal box size
and posion when sourcing replacement motors.
Table 2 Overall length
Pump type Length (mm)
E2M40 775
E2M80 840
E2M175 1010
E2M275 1110
4.1.2 Mass
Table 3 Pump mass
Pump type Mass with no oil (kg)
E2M40 85.0
E2M80 111.0
E2M175 265.0
E2M275 270.0
4.2 Mechanical data
WARNING: MOTOR OVERSPEED
Risk of damage to equipment. Do not exceed the maximum rotaonal speed.
Overspeeding may lead to temperature above the T class limit and/or cause damage to
the pump and motor.
Degree of protecon IP55 (3 ph pumps)
Maximum lt angle 10°
Maximum motor rotaonal speed (50 Hz supply) 1500 rpm
Maximum motor rotaonal speed (60 Hz supply) 1800 rpm
Page 10
A36418880_A - Technical data

4.3 Operang condions
Temperature range: Operang +12 °C to +40 °C (53 °F to 104 °F)
Relave humidity 10% to 90%
Maximum operang altude 1000 m
4.4 Noise data
Note:
Data measured at ulmate vacuum 1 metre from end of the pump.
Table 4 Noise data
Pump Variant dB (A)
E2M40 3 ph 400 V 50 Hz 72
E2M80 3 ph 400 V 50 Hz 70
E2M175 3 ph 400 V 60 Hz 75
E2M275 3 ph 400 V 60 Hz 75
4.5 Vibraon data
Refer to pump instrucon manual.
4.6 Electrical data
4.6.1 Electrical data: three-phase pumps
When you start a cold pump, the motor will draw the start‑up current shown in Table :
Electrical data (three ‑ phase pumps) on page 11 for several seconds. The current will then
reduce quickly as the motor reaches rated rotaonal speed. Within 5 minutes, as the oil and
pump warms up, the current drawn will slowly reduce to the full load current specied in
Table : Electrical data (three
‑ phase pumps) on page 11.
When you start a warm pump, the motor will draw the start‑up current shown in Table :
Electrical data (three ‑ phase pumps) on page 11 for up to 0.5 seconds. The current drawn will
then immediately fall to the full load current specied in Table : Electrical data (three ‑ phase
pumps) on page 11.
Electrical short‑circuit and ground‑fault protecon of the pump will be provided by ng
Class CC fuses of the values shown in Table : Electrical data (three
‑ phase pumps) on page 11
at the point of connecon to the supply. If these are not available in your country of use,
Type aM European fuses of the same rang can also be used.
Table 5 Electrical data (three‑phase pumps)
Pump
Nominal
supply
(V)
Frequency
(Hz)
Power
(kW)
Full load
current
(A)
Start‑up
current
(A)
Recommended
fuse rang
(A)
E2M40 400 50/60 1.1 2.55 11 5
E2M80 400 50/60 2.2 4.8 14 10
E2M175 400 50/60 5.5 11 52 20
Page 11
A36418880_A - Technical data

Pump
Nominal
supply
(V)
Frequency
(Hz)
Power
(kW)
Full load
current
(A)
Start‑up
current
(A)
Recommended
fuse rang
(A)
E2M275 400 50/60 7.5 14.5 52 25
Page 12
A36418880_A - Technical data

5. Installaon
The system as supplied by us is congured for operaon as dened in this manual. This is an
ATEX approved system and no modicaons may be made to the system and maintenance is
restricted to the acvies listed in Maintenance on page 19. Excepons to this instrucon
may invalidate the ATEX cercaon of the system. If in doubt please consult us.
5.1 Safety
WARNING:
Obey the safety instrucons given below and take note of the appropriate precauons. If
you do not, you can cause injury to people or damage to equipment.
WARNING:
The oil sealed vacuum pumps are supplied with a sealed Gas Ballast. Plugs have been
ed to prevent ammable atmospheres accidentally entering the pump. If the gas
ballast facility is required, a purge gas must be used. Failure to obey these instrucons
may cause harm, injury or death to persons.
WARNING:
If your pump is cered for IIC external operaon, you must only wipe the outside of the
pump with a damp cloth.
Skilled technicians familiar with vacuum equipment must perform the installaon of this
equipment. We recommend that you read the Safety Booklet P40040100.
▪ If the external atmosphere around the pump is of a higher category than the
internal atmosphere of the pump, make sure that the pump oil box remains at a
higher pressure than the external atmosphere. This will ensure that the external
atmosphere cannot enter the pump. This can be accomplished by providing a
constant purge of a suitable gas through the gas ballast port (refer to the specic
pump manual) using appropriate ATEX cered equipment. Refer to the safety
booklet P40040100 (secon - Avoiding the ammable zone) for details on methods
to avoid the ammable zone.
▪In the event of an exhaust line becoming blocked, there is a possibility of the inlet
side of the pump and any process volume aached to it, being pressurised. Such a
blockage should be prevented.
▪All liing operaons must be carried out using the idened liing points and
appropriate equipment and techniques.
▪You must connect the addional thermal protecon devices as specied in
Connecon of addional thermal protecon devices such that the system will stop
if a fault condion occurs.
▪Where appropriate, the system should be purged to remove harmful process
materials. This should occur before the start of the process and at the end of the
process or before shutdown. Failure to do so could lead to process materials
causing corrosion, or an undesired reacon producing materials with a lower auto
ignion temperature than the system is cered to pump.
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▪ The pump must not be able to restart unl a fault condion has been cleared.
▪ Your control must incorporate a manual reset device, which you must use to
restart the system aer a fault condion.
▪ The design of the pumps is such that it will not stop or limit the range of explosion
ames or pressures if such an explosion occurs in adjacent equipment. It is the
users responsibility to consider this when the system design is undertaken.
5.2 Mechanical installaon
Consider the following points when you design your pumping system:
▪Unpacking, storage and disposal of all packaging.
▪Ensure both the motor and the pump have ATEX labels.
▪Posion the pump using suitable liing equipment.
▪Connect water supplies (E2M/175/275).
▪Check the integrity of all system connecons.
▪The inlet and outlet connecons are the interfaces between the pump and the
process and exhaust lines. The conguraon of these connecons is important and
the connecons must meet the requirements of BS 4504 (for DN anges) or
ANSI B16.5 (ANSI anges).
▪ Connect the exhaust outlet to your exhaust system. Ensure that your system is
capable of dealing with the exhaust gases safely.
▪Make sure that the exhaust pipeline cannot become blocked. If you have an
exhaust‑isolaon valve, make sure that you cannot operate the pump with the
valve closed.
▪ Provide for a purge of inert gas to dilute dangerous gases to safe concentraons.
5.3 Electrical installaon
WARNING:
Obey the instrucons given below and take note of the appropriate precauons. Failure
to do so will compromise the ATEX compliance and may cause harm, injury or death to
persons.
WARNING:
The external thermal snap switch ed to the body of the E2M175 and E2M275 rotary
pumps must be connected to an intrinsically safe circuit suitable for the hazardous zone
in which it may be located. Otherwise it must be located in a safe area. Failure to do so
will compromise the ATEX compliance and may cause harm, injury or death to persons.
Skilled technicians familiar with vacuum equipment must perform the installaon of this
equipment. We recommend that you read the safety booklet P40040100.
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5.3.1 Check and congure the motor: three phase pumps
CAUTION:
Ensure that the motor is correctly congured for your electrical supply. If you operate the
pump when the motor is not correctly congured for the electrical supply, you will
damage the motor.
Note:
We do not supply the motor cable gland. Therefore the customer must provide an 'Exdb'
cered cable gland to maintain the integrity of the ameproof motor.
1. Remove the screws that secure the cover of the motor terminal‑box using a 5 mm
hexagonal key.
2. Fit an 'Exdb' cered cable gland. Refer to Table : Cable gland reference on page 15.
3. Ensure that the motor is correctly rated and congured for your electrical supply. Refer
to the motor manufacturer's wiring diagram supplied inside the motor terminal box lid.
If necessary, recongure the links to suit your electrical supply.
Table 6 Cable gland reference
Pump type Gland thread
ATAV motor CEMP motor
E2M40/80 M20 M25
E2M175/275 M25 M32
5.3.2 Connect the pump to your electrical supply
WARNING:
Ensure that the electrical installaon of the pump conforms to your local and naonal
safety requirements. It must be connected to a suitably fused and protected electrical
supply with a suitable earth point.
Connect the motor to the electrical supply in accordance with the manufacturer's
recommended installaon instrucons supplied with the motor. In addion, the following
points must be observed.
▪You must use a suitable electrical supply cable.
▪You must use a ameproof cable gland, cered to 'Exdb'.
▪Connect the electrical supply to the motor through a starter or circuit breaker,
which has thermal over current protecon.
▪You must connect the thermal protecon devices if provided. This is an ATEX
requirement and must be performed to maintain cercaon. See Connecon of
addional thermal protecon devices.
▪We recommend that you connect the motor to the electrical supply through
suitable control equipment that requires a manual reset aer an electrical supply
failure. If you do not, the pump will restart when the supply is restored.
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5.3.3 Connecon of addional thermal protecon devices
EM40/80 pumps
No addional thermal protecon devices are required.
EM175/275 pumps
The external thermal snap switch located on the body of the pump, must be connected to an
intrinsically safe circuit in accordance with EN60079-7 and installed in accordance with
EN60079-14. Electrical apparatus for use in potenally explosive atmospheres - Intrinsic
safety "i" for use with simple apparatus suitable for the classicaon of the hazardous zone
in which the pump will be located.
If this is not possible, the circuit should be placed in a safe zone.
5.3.4 Check the direcon of rotaon
CAUTION:
Ensure that the pump‑motor rotates in the correct direcon. If it does not, the pump and
your vacuum system can become pressurised.
1. Correct direcon of rotaon is an clockwise when looking on the motor fan.
2. Watch the motor fan, switch on the supply to the motor for a few seconds, and then
switch o.
3. If the direcon of rotaon is incorrect, isolate the motor from the supply and
recongure the electrical connecons to the motor; refer to the manufacturer's
recommended installaon instrucons supplied with the motor.
4. Repeat the above check to ensure the direcon of rotaon is correct.
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6. Operaon
Note:
We recommend that you obtain and read the Vacuum pump and vacuum system safety
manual (publicaon number P40040100), available from us or your supplier.
WARNING:
If you supply your own control system you must include emergency stop devices. These
should be ed with restart lockouts such that a new start command may only take
eect aer the lockouts have intenonally been reset.
WARNING:
You must obey the instrucons within this manual. Failure to do so will compromise the
ATEX compliance and may cause harm, injury or death to persons.
6.1 Pumping ammable/pyrophoric materials
WARNING:
You must obey the instrucons and take note of the precauons given below, to ensure
that pumped gases do not enter their ammable ranges
When ammable materials are present within the equipment you must:
▪Ensure the system is leak ght.
▪Use an inert gas purge (for example, a nitrogen purge) to dilute any ammable
gases or vapours entering the pump inlet, and/or use an inert gas purge to reduce
the concentraon of ammable gases or vapours in the pump and in the exhaust
pipeline to less than one quarter of the gases' published lower explosive
limits (LEL).
Use an inert gas purge in to the pump gas ballast connecon to prevent the condensaon of
ammable vapours within the pump mechanism and exhaust pipeline.
6.2 Gas purges
WARNING:
If you use inert gas purges to dilute dangerous gases to a safe level, ensure that the
rotary vacuum pump is shut down if an inert gas supply fails
WARNING:
You must obey the instrucons and take note of the precauons given below, to ensure
that the pumped gases do not enter their ammable ranges.
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WARNING:
You must obey the instrucons within this manual. Failure to do so will compromise the
ATEX compliance and may cause harm, injury or death to persons.
Switch on the inert gas purge to remove air from the pump and the exhaust pipeline before
the process starts. Switch o the purge ow at the end of the process only aer any
remaining ammable gases or vapours have been purged from the pump and exhaust
pipeline.
If liquids that produce ammable vapours could be present in the pump foreline, then the
inert gas purge to the vacuum pump should be le on all the me this liquid is present.
Flammable liquids could be present in the foreline as a result of condensaon, or may be
carried over from the process.
When you calculate the ow rate of inert gas required for diluon, consider the maximum
ow rate for the ammable gases/vapours that could occur. For example, if a mass ow
controller is used to supply ammable gases to the process, you should assume a ow rate
for ammable gases that could arise if the mass ow controller is fully open.
Connually measure the inert gas purge ow rate: if the ow rate falls below that required,
you must stop the ow of ammable gases or vapours into the pump.
6.3 Manual reset
The pump must not be able to restart automacally aer a fault condion unl the fault has
been cleared.
Your control must incorporate a manual reset device, which you must use to restart the
system aer a fault condion has occurred.
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