BOC Edwards A343-15-904 User manual

A343–10–880 Issue L Original
Instruction Manual
E1M18 and E2M18 Rotary Vacuum Pumps
Description Item Number
E1M18, 100/200 V, 50 Hz or 100-105/200-210 V, 60 Hz, single-phase A343-15-904
E1M18, 115/230 V, 60 Hz, single-phase A343-15-981
E1M18, 220 V, 50/60 Hz, single-phase A343-15-920
E1M18, 220-240 V, 50 Hz, single-phase A343-15-912
E1M18, 220-240 V, 50 Hz, or 230-240 V, 60 Hz, single-phase A343-15-903
E1M18, 200-230/380-460 V, 50/60 Hz, three-phase A343-10-940
E1M18, 220-240 V, 50 Hz, or 230-240 V, 60 Hz, single-phase (Amphenol) A343-16-903
E1M18, 110/200-240 V, 50 Hz, or 115-120/200-230 V, 60 Hz, single-phase A343-17-984
E2M18, 100/200 V, 50 Hz or 100-105/200-210 V, 60 Hz, single-phase A363-15-904
E2M18, 115/230 V, 60 Hz, single-phase A363-15-981
E2M18, 220 V, 50/60 Hz, single-phase A363-15-920
E2M18, 220-240 V, 50 Hz, single-phase A363-15-912
E2M18, 220-240 V, 50 Hz, or 230-240 V, 60 Hz, single-phase A363-15-903
E2M18, 200-230/380-460 V, 50/60 Hz, three-phase A363-10-940
E2M18, 110/200-240 V, 50 Hz, or 115-120/200-230 V, 60 Hz, single-phase A363-17-984
E2M18-FF, 200-230/380-460 V, 50/60 Hz, three-phase A363-21-940
E2M18-FF, 100/200 V, 50/60 Hz, single-phase A363-25-904
E2M18, 220-240 V, 50 Hz, single-phase A363-25-912

Declaration
ofConformity
W€, BOCEdwards,
ManorRoyal,
Crawley,
WestSussexRH102LW,UK
declareunderoursoleresponsibilitythatthe
product(s)
E1M18andE2M18RotaryVacuumPumps
4343-10-940 A343-15-920 A353-15-904 A363-21-940
A343-15-903 A343-15-981 A363-15-912 A363-25-904
A343-15-904 A363-10-940 A363-15-920 A363-25-912
A343-15-912 A363-15-903 A363-15-981 A363-16-903
A343-17-984 4363-17-984
towhich
thisdeclaration
relatesis
inconformity
with
the
followingstandard(s)
orothernormativedocument(s)
EN
ISO12100-2:
2003 SafetyofMachinery
- BasicConcepts,GeneralPrinciplesforDesign.
EN61010-1:2001 SafetyRequirements
forElectricalEquipmentforMeasurement,Control,
andLaboratoryUse.*
IEC
34
Parts1,5,
8t, 11*:1991 Central
Requirements
for
Rotating
ElectricalMachines.
C22.2
No
77:7998# MotorswithInherentOverheating
Protection.
C22.2No100:1992
# Motorsand
Generators.
C22.2No1010.1:t992# SafetyRequirements
forElectricalEquipmentforMeasurement
Control
andLaboratory
Use,
Part1:General
Requirements.
UL610104:2002# Electrical Equipment
forLaboratoryUse,Paft1:GeneralRequirements.
UL1004:1994
# Electric Motors.
EN13463-1:2001 NonElectricalEquipmentfor
PotentiallyExplosiveAtmospheres.
t 3-phase pumps
only.
x l-phase
pumps
only. The
pumps
complywithEN61010-1
wheninstalledin
accordance
withtheinstruction
manualsuppliedwiththe
pumps.
# l-phase
pumps
only. Canadian StandardsAuthorityandUnderwritersLaboratory.
followingthe
provisions
of
731023/EEC LowVoltageDirective.
89/336/EEC Electromagnetic Compatibility
Directive.
98l37lEC MachinerySafety
Directive.
94/9/EC Equipment
for
use
inPotentially
ExplosiveAtmospheres
(ATEX
Directive)
(Category
3GD)
InternalAtmospheresOnly.
IDtJ*r- $ OeCe".Oe.. Zo.+ 3t{O.ieHAn-
Dr.J.D.Watson,DirectorofTechnology,
VacuumEquipmentandExhaust
Management
ProductDivisions Date
and
Place
This
product
has
been
manufacturedunderaquality syslern
registered
tolSO9001
^W BOCEDWARDS
u
=
2
e
e
o
c
4

E1M18 and E2M18 Rotary Vacuum Pumps
PAGE
i
Issue K iJul 05
CONTENTS
Section Page
1INTRODUCTION 1
1.1 Scope and definitions 1
1.2 ATEX directive implications 2
1.3 Description 4
1.4 Gas-ballast 4
2 TECHNICAL DATA 5
2.1 Operating and storage conditions 5
2.2 Performance 5
2.3 Mechanical data 6
2.4 Lubrication data 6
2.5 Electrical data 6
3INSTALLATION 11
3.1 Safety 11
3.2 System design 12
3.3 Unpack and inspect 12
3.4 Locate the pump 13
3.5 Fill the pump with oil 13
3.6 Electrical installation: single-phase motors 14
3.6.1 Introduction 14
3.6.2 Standard single-phase motors 15
3.6.3 Amphenol version single-phase motors 15
3.6.4 110/200-240 V 50 Hz or 115-120/200-230 V 60 Hz single-phase motors 15
3.7 Electrical installation: three-phase motors 19
3.7.1 Connect the electrical supply to the motor 19
3.7.2 Check the direction of rotation 20
3.8 Connect the pump inlet 20
3.9 Connect the pump outlet 22
3.10 Gas-ballast inlet connection 22
3.11 Leak test the system 22
4OPERATION 23
4.1 ATEX directive implications 23
4.1.1 Introduction 23
4.1.2 Flammable/pyrophoric materials 23
4.1.3 Gas purges 24
4.2 Gas-ballast control 24
4.3 Start-up 25
4.4 To achieve ultimate vacuum 25
4.5 To pump condensable vapours 26
4.6 To decontaminate the oil 26
4.7 Unattended operation 26
4.8 Shut-down 27
dcs/7277/0906

E1M18 and E2M18 Rotary Vacuum Pumps
PAGE
ii
Issue K ii Jul 05
Section Page
5 MAINTENANCE 29
5.1 Safety information 29
5.2 Maintenance plan 29
5.3 Check the oil-level 30
5.4 Replace the oil 30
5.5 Inspect and clean the inlet-filter 31
5.6 Clean the gas-ballast filter 32
5.7 Clean the motor fan-cover and enclosure 33
5.8 Clean and overhaul the pump 33
5.9 Fit new blades 33
5.10 Test the motor condition 33
5.11 Fault finding 33
5.11.1 Introduction 33
5.11.2 The pump has failed to start 33
5.11.3 The pump fails to achieve specified performance (failure to reach ultimate vacuum) 34
5.11.4 The pump is noisy 34
5.11.5 The pump surface temperature is above 100 oC34
5.11.6 The vacuum is not maintained after the pump is switched off 35
5.11.7 The pumping speed is poor 35
5.11.8 There is an external oil leak 35
6 STORAGE AND DISPOSAL 37
6.1 Storage 37
6.2 Disposal 37
7 SERVICE, SPARES AND ACCESSORIES 39
7.1 Introduction 39
7.2 Service 39
7.3 Spares 39
7.4 Accessories 40
7.4.1 Introduction 40
7.4.2 Inlet Catchpot 40
7.4.3 Inlet Dust Filter 40
7.4.4 Inlet Desiccant Trap 40
7.4.5 Inlet Chemical Trap 40
7.4.6 Outlet Mist Filter 40
7.4.7 Solenoid Operated Pipeline Valve 42
7.4.8 Foreline Trap 42
7.4.9 Vibration Isolators 42
7.4.10 Oil Drain Extension 42
7.4.11 Pump Inlet Adaptor 42
7.4.12 Flexible Bellows 42
7.4.13 Pump Outlet Adaptor 42
7.4.14 Gas Ballast Banjo/Elbow Assembly 42
7.4.15 Gas Ballast Valve 42
RETURN OF BOC EDWARDS EQUIPMENT

E1M18 and E2M18 Rotary Vacuum Pumps
PAGE
iii
Issue K iii Jul 05
ILLUSTRATIONS
Figure Page
1 The E1M18/E2M18 pump 3
2 Dimensions (mm): key 8
3 Electrical supply connection: single-phase motors: 220-240 V 50 Hz and
230-240 V 60 Hz 16
4 Electrical supply connection: single-phase motors: 100 V 50 Hz, 100-105 V 60 Hz
and 115 V 60 Hz 16
5 Electrical supply connection, single-phase motors: 200 V 50 Hz, 200-210 V 60 Hz
and 230 V 60 Hz 17
6 Electrical supply connection, single-phase motors with Amphenol connector:
200-240 V 50 Hz and 230-240 V 60 Hz 17
7 Motor voltage selection: single-phase motors, 110/200-240 V 50 Hz and
115-120/200-240 V 60 Hz 18
8 Electrical supply connection, three-phase motors: 200-220 V 50 Hz and 200-230 V 60 Hz 21
9 Electrical supply connection, three-phase motors: 380-415 V 50 Hz and 460 V 60 Hz 21
10 Remove/replace the inlet filter 31
11 Remove/replace the gas-ballast filter 32
12 Accessories 41
TABLES
Table Page
1 Operating and storage conditions 5
2Performancedata 5
3 Mechanical data 6
4Lubricationdata 6
5 Electrical data: three-phase motors 7
6 Electrical data: single-phase motors 7
7 Checklist of items 12
8 Motor connection details 14
9 Maintenance plan 30
10 Spares Item Numbers 39
11 Accessory Item Numbers 40
Associated publications
Publication title Publication Number
Vacuum pump and vacuum system safety P300-20-000
Vibration isolators A248-01-880
EMF3, EMF10 and EMF20 oil mist filters A462-26-880

E1M18 and E2M18 Rotary Vacuum Pumps
PAGE
iv
Issue K iv Jul 05
This page intentionally blank.

E1M18 and E2M18 Rotary Vacuum Pumps
INTRODUCTION
PAGE
1
Sep 06 1Sep 06
1 INTRODUCTION
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the BOC Edwards E1M18
and E2M18 rotary vacuum pumps. You must use the pump as specified in this manual.
Read this manual before you install and operate the 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.
The units used throughout this manual conform to the SI international system of units of measurement.
The following warning labels are on the pump:
Warning – refer to accompanying documentation.
Warning – risk of electric shock.
Warning – hot surfaces.
WARNING
Warnings are given where failure to observe the instruction could result in injury or death
to people.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment,
associated equipment and process.
Warning - do not block the pump outlet.

E1M18 and E2M18 Rotary Vacuum Pumps
INTRODUCTION
PAGE
2
Issue L 2Sep 06
1.2 ATEX directive implications
• This equipment is designed to meet the requirements of Group II Category 3 equipment in
accordance with Directive 94/9/EC of the European Parliament and the Council of 23rd March 1994
on the approximation of the laws of the Member States concerning equipment and protective
systems intended for use in potentially explosive atmospheres. (The ATEX Directive)
The ATEX Category 3 applies in respect of potential ignition sources internal to the equipment. An
ATEX Category has not been assigned in respect of potential ignition sources on the outside of the
equipment as the equipment has not been designed for use where there is an external potentially
explosive atmosphere.
There is no potential source of ignition within the pump during normal operation but there may be
potential sources of ignition under conditions of predictable and rare malfunction as defined in the
Directive. Accordingly, although the pump is designed to pump flammable materials and mixtures,
operating procedures should ensure that under all normal and reasonably predictable conditions,
these materials and mixtures are not within explosive limits. Category 3 is considered appropriate
for the avoidance of ignition in the case of a rare malfunction which allows flammable materials or
mixtures to pass through the pump while within their explosive limits.
• When flammable or pyrophoric materials are present within the equipment you must:
• Not allow air to enter the equipment.
• Ensure that the system is leak tight.
• For further information, please contact BOC Edwards: refer to the Addresses page at the end of
this manual for details of your nearest BOC Edwards company.

E1M18 and E2M18 Rotary Vacuum Pumps
INTRODUCTION
PAGE
3
Sep 06 3Sep 06
Figure 1 – The E1M18/E2M18 pump
1. Oil filler
2. Outlet nozzle
3. Gas-ballast control
4. Gas-ballast inlet
5. Centring-ring and ‘O’ ring (supplied)
6. Inlet-port (adaptor flange)
7. Cable-gland/Amphenol connector position
8. Motor terminal box
9. On/Off switch
10. Baseplate
11. Oil drain-plug (gravity drain)
12. Oil sight-glass
13. Pump identification label
Notes: A pump with a single-phase motor is shown in this figure.
The motor shown in this figure is not representative of the motor used on the E1/E2M18
pumps with Item Numbers A343-17-984 and A363-17-984. On these pumps, items 7
and 9 are transposed, with Item 7 being an IEC60320 16-20 Amp socket.

E1M18 and E2M18 Rotary Vacuum Pumps
INTRODUCTION
PAGE
4
Issue L 4Sep 06
1.3 Description
The BOC Edwards E1M18 and E2M18 pumps are shown in Figure 1. Refer to Figure 1 for item numbers
in brackets in the following descriptions.
The E1M18 and E2M18 pumps are direct drive, sliding vane pumps. The E1M18 is a single-stage pump,
and the E2M18 is a two-stage pump. The pump is oil-sealed and designed for reliable, long-term operation
in both laboratory and industrial environments. The pump is a free-standing unit. The drive is provided
through a flexible coupling by a single-phase or three-phase (four pole) motor.
The motors are totally enclosed and are cooled by the motor-cooling fan which directs air along the
motor fins.
The single-phase motors have a thermal overload device. When the motor is too hot, the thermal
overload device switches off the pump. The thermal overload device has an automatic reset; when the
motor cools down, the device resets and the motor will restart. The single phase motors have an on/off
switch.
An oil pressure system lubricates the pump shaft bearing surfaces and rotor sealing faces. The pump has
an oil distribution valve which prevents discharge of oil to the pump interior (suckback) after the pump
stops. The pumping chambers are air-tight, so this arrangement prevents air suckback unless the gas-
ballast valve is open. For protection in this case, refer to Section 1.4.
You can inspect the level and condition of oil in the oil box reservoir through the oil sight-glass (12). An
oil filler-plug (1) is fitted to the top of the oil box. The pump has an oil drain-plug (11) to allow gravity
oil drain.
The pump has an inlet-port (6), outlet nozzle (2) and gas-ballast control (3). The pump is mounted on an
aluminium alloy baseplate (10) on rubber pads. Details of suitable vibration isolators and other
recommended accessories are given in Section 7.4.
1.4 Gas-ballast
When you use the pump with high vapour throughputs, you should use the gas-ballast facility to prevent
condensation of the vapours inside the pump. The condensates will contaminate the oil, will cause
performance to deteriorate and may cause corrosion of the pump mechanism.
Air (or an inert gas) can be introduced into the pump mechanism through the gas-ballast control
(Figure 1, item 3).
The gas-ballast control is a multi-turn valve:
• From the closed position, the first two turns of the gas-ballast control provide an additional oil-feed
to the pump mechanism, but do not introduce gas-ballast into the pump. The additional oil-feed
improves the lubrication and sealing of the pump mechanism.
• With further turns of the gas-ballast control, the gas-ballast flow into the pump increases from zero
flow, until the valve is fully open.

E1M18 and E2M18 Rotary Vacuum Pumps
TECHNICAL DATA
PAGE
5
Sep 06 5Sep 06
2 TECHNICAL DATA
2.1 Operating and storage conditions
Note: To comply with CSA standards, the pump must be installed and used indoors, and within the operating
conditions specified in Table 1 below.
2.2 Performance
Note: Where total pressures are shown in Table 2 below, measurements were taken using an untrapped total
pressure capacitance diaphragm gauge on a header, as specified by Pneurop standards.
Ambient temperature range (operation) 13 to 40 oC
Ambient temperature range (storage) -30 to 70 oC
Normal surface temperature of the pump-body * 45 to 65 oC
Maximum humidity (operation) 90% RH
Maximum altitude (operation) 2000 m
Pollution degree 2
Installation category II
Noise level at 1 metre 57 dB(A) (at 50 Hz)
* At ultimate vacuum, with ambient temperature of 20 oC.
Table 1 – Operating and storage conditions
Maximum displacement E2M28 E2M30
50 Hz electrical supply 20.5 m3h-1 20.5 m3h-1
60 Hz electrical supply 25.0 m3h-1 25.0 m3h-1
Maximum pumping speed - Pneurop
50 Hz electrical supply 17.0 m3h-1 17.0 m3h-1
60 Hz electrical supply 20.4 m3h-1 20.4 m3h-1
Motor rotational speed
50 Hz electrical supply 1440 r min-1 1440 r min-1
60 Hz electrical supply 1720 r min-1 1720 r min-1
Ultimate vacuum
without gas-ballast (partial pressure) 2 x 10-2 mbar
2 Pa
1 x 10-4 mbar
1 x 10-2 Pa
without gas-ballast (total pressure) 3 x 10-2 mbar
3 Pa
1 x 10-3 mbar
1 x 10-1 Pa
with full gas-ballast (partial pressure) 6.5 x 10-1 mbar
6.5 x 101Pa
5 x 10-3 mbar
5 x 10-1 Pa
Maximum water vapour inlet pressure 50 mbar
5 x 103Pa
20 mbar
2 x 103Pa
Maximum water vapour pumping rate 0.65 kg h-1 0.3 kg h-1
Maximum permitted outlet pressure
(for full pump throughout)
0.5 bar gauge
1.5 bar absolute
1.5 x 105Pa
0.5 bar gauge
1.5 bar absolute
1.5 x 105Pa
Table 2 – Performance data

E1M18 and E2M18 Rotary Vacuum Pumps
TECHNICAL DATA
PAGE
6
Issue L 6Sep 06
2.3 Mechanical data
2.4 Lubrication data
Note: A BOC Edwards Material Safety Data Sheet for the oil specified below is available on request.
2.5 Electrical data
Refer to Tables 5 and 6. The motor start-up current is drawn for less than one second, so you must use
slow-blow fuses to prevent unnecessary fuse failure when the pump starts. Fuses should be to EN60269
Section 2.2. For conformance with CSA standards only CSA certified fuses are to be used. If you use the
pump at temperatures lower than 13 ºC, the start-up current will be drawn for longer; this may cause
the motor thermal overload device to open.
Approximate pump mass 38 kg (E1M18), 41 kg (E2M18)
Dimensions See Figure 2
Degree of protection
Single-phase motors
Three-phase motors
IP44
IP54
Pump inlet port
NW25 (the flange can be removed from the 1 inch BSP
threaded hole)
Pump outlet port 15 mm external diameter nozzle (the nozzle can be
removed from the 3/4inch BSP threaded hole)
Table 3 – Mechanical data
Recommended oil * Ultragrade 19
Maximum oil capacity
E1M18 1.4 litres
E2M18 1.05 litres
* To operate the pump when the ambient temperature is outside the range specified in Section 2.1, or
to optimise pump performance when you process condensible vapours, you may need a different oil.
Table 4 – Lubrication data

E1M18 and E2M18 Rotary Vacuum Pumps
TECHNICAL DATA
PAGE
7
Sep 06 7Sep 06
Pump Item Number Voltage
(V)
Frequency
(Hz)
Full load
current
(A)
Start
current
(A)
Maximum
fuse
rating (A)
A343-10-940
200-220
380-415
200-230
460
50
50
60
60
3.3
1.9
2.3
1.6
16.1
10.2
15.9
10.6
10
6
10
6
A363-10-940
200-220
380-415
200-230
460
50
50
60
60
3.3
1.9
3.4
1.6
16.1
10.2
15.9
10.6
10
6
10
6
Motor output rating (continuous)
50 Hz operation
60 Hz operation
0.65 kW
0.75 kW
Table 5 – Electrical data: three-phase motors
Pump Item Number Voltage
(V)
Frequency
(Hz)
Full load
current
(A)
Start
current
(A)
Maximum
fuse
rating (A)
A363-15-903, A343-16-903,
A343-15-903
220-240
230-240
50
60
4.6
5.0
33
33
15
15
A343-15-981, A363-15-981 115
230
60
60
11.0
5.5
70
35
40
20
A343-15-904, A363-15-904
100
100-105
200
200-210
50
60
50
60
12.0
11.0
6.0
5.5
88
88
44
44
30
30
15
15
A343-17-984, A363-17-984
110
115-120
200-240
200-230
50
60
50
60
11.0
10.0
5.5
5.0
42
38
32
31
30
25
15
15
A343-15-912, A363-15-912 220-240 50 5.0 25 13
A343-15-920, A363-15-920 220
220
50
60
5.5
5.0
35
35
15
15
Motor output rating (continuous)
50 Hz operation
60 Hz operation
0.55 kW or 0.65 kW
0.75 kW
Table 6 – Electrical data: single-phase motors

E1M18 and E2M18 Rotary Vacuum Pumps
TECHNICAL DATA
PAGE
8
Issue L 8Sep 06
Figure 2 – Dimensions (mm): key
Pump Item Number Hz Dimension (mm)
Single-phase motors ABCD
A343-15-912 50 518 - 241 162
A363-15-912 50 520
A343-15-920, A363-15-920 50 474 - 241 162
60 520 - 241 162
A343-15-981 60 474 518 241 162
A363-15-981 60 520 564 241 162
A343-15-904 50/60 474 518 241 162
A363-15-904 50/60 520 564 241 162
A363-15-903, A363-17-984 50/60 550 - 251 183
A343-16-903, A343-15-903, A343-17-984 50/60 504 - 251 183
Three-phase motors
A343-10-940 50/60 474 162
A363-10-940 50/60 520 162
1. Top view of pump with single-phase motor
2. Side view of pump with single-phase motor
3. Side view of pump with three-phase motor
4. Front view of pump with single-phase motor

E1M18 and E2M18 Rotary Vacuum Pumps
TECHNICAL DATA
PAGE
9
Sep 06 9Sep 06
Figure 2 – Dimensions (mm)

E1M18 and E2M18 Rotary Vacuum Pumps
PAGE
10
Issue L 10 Sep 06
This page intentionally blank.

E1M18 and E2M18 Rotary Vacuum Pumps
INSTALLATION
PAGE
11
Sep 06 11 Sep 06
3 INSTALLATION
3.1 Safety
• A suitably trained and supervised technician must install the pump.
• Wear the appropriate safety-clothing when you come into contact with contaminated components.
• Vent and purge your vacuum system before you start installation work.
• Ensure that the installation technician is familiar with the safety procedures which relate to the
pump-oil and the products processed by the pumping system. Take suitable precautions to avoid
the inhalation of oil mist and excessive skin contact with pump -oil, as prolonged exposure can be
harmful.
• Disconnect the other components in the pumping system from the electrical supply so that they
cannot be operated accidentally.
• Safely route any electrical supply cables so that they cannot accidentally trip people.
• You must ensure that the E1M18 or E2M18 pump is suitable for your application. If you have any
doubts as to the suitability of the pump for your application, refer to the BOC Edwards guidelines
on vacuum pump and vacuum system safety (see the Associated Publication at the end of the
contents list at the front of this manual).
WARNING
If you use a hydrocarbon oil in this pump, you must not use the pump to process oxygen
in concentrations greater than 25% in volume. If you do, there is a risk of fire or explosion
in the oil-box of the pump.
WARNING
You must not use the E1M18 or E2M18 pump to pump hazardous substances.
WARNING
Obey the safety instructions listed below and take note of appropriate precautions. If you
do not, you can cause injury to people and damage to equipment.

E1M18 and E2M18 Rotary Vacuum Pumps
INSTALLATION
PAGE
12
Issue L 12 Sep 06
3.2 System design
Consider the following points when you design your pumping system:
• Use a suitable inlet-valve to isolate the pump from your vacuum system if you need to allow the
pump to warm up before you pump condensable vapours, or if you need to maintain vacuum when
the pump is switched off.
• Avoid high levels of heat input to the pump from the process gases, otherwise the pump may
overheat and seize, and cause the motor thermal overload device to open.
• If you use the pump in a high ambient temperature and have a high gas throughput, the temperature
of the pump-body may exceed 70 oC and you must fit suitable guards to prevent contact with hot
surfaces.
• Make sure that the exhaust pipeline cannot become blocked. If you have an outlet-isolation valve,
make sure that you cannot operate the pump with the valve closed.
• Provide for a purge of inert gas when you shut down the pumping system, to dilute dangerous gases
to safe concentrations. A suitable gas-ballast control valve for introduction of purge gas into the
pump is available as an accessory (see Section 7.4.15).
3.3 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. Check that your package contains the items listed in Table 7. If any of these items are missing, notify
your supplier within 3 days.
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.
Quantity Description Check (!)
1 E1M18 or E2M18 rotary vacuum pump !
(1) Fitting pack containing the following:
1 NW25 centring-ring !
1 ‘O’ ring for centring-ring !
1 Receptacle connectors * !
* Various sizes: supplied with single-phase motors except for pumps with
Item Numbers A343-16-903, A343-17-984 and A363-17-984.
Table 7 – Checklist of items

E1M18 and E2M18 Rotary Vacuum Pumps
INSTALLATION
PAGE
13
Sep 06 13 Sep 06
3.4 Locate the pump
The pump can be either free-standing on its baseplate, or be fixed by bolts through the four fixing holes
in the baseplate, or be used with vibration isolators. For the locations of the fixing holes in the baseplate,
refer to Figure 2.
Provide a firm, level platform for the pump. Locate the pump so that the oil-level sight-glass is visible and
the oil filler-plug, oil drain-plugs and gas -ballast control are accessible.
If your pump will be located inside an enclosure, make sure that there is adequate ventilation at both
ends of the pump, so that the ambient temperature around the pump does not exceed 40 oC. There must
be a minimum space of 25 mm between the pump and the enclosure walls.
3.5 Fill the pump with oil
Fill the pump with oil as described below. Refer to Figure 1 for the item numbers in brackets.
1. Remove the oil filler-plug (1).
2. Pour oil into the pump until the oil-level reaches the MAX mark on the bezel at the top of the oil
sight-glass (12). If the oil-level goes above the MAX mark, remove the oil drain-plug (11) and drain
the excess oil from the pump.
3. After a few minutes, recheck the oil-level. If the oil-level is now below the MAX mark, pour more
oil into the pump.
4. Refit the oil filler-plug. Tighten the plug firmly by hand. Do not overtighten.
WARNING
Use suitable lifting equipment to move the pump. If you do not, you can injure yourself
or damage the pump. Refer to Section 2.3 for the mass of the pump.

E1M18 and E2M18 Rotary Vacuum Pumps
INSTALLATION
PAGE
14
Issue L 14 Sep 06
3.6 Electrical installation: single-phase motors
3.6.1 Introduction
Note: The pump will restart automatically when the electrical supply is restored after an interruption and when
the pump cools after it has overheated. If you do not want the pump to restart automatically, use electrical
control equipment which must be reset manually.
Ensure that your electrical supply voltage corresponds with the voltage specified on the motor data plate.
Table 5 gives the recommended fuse rating, and Table 8 specifies the Figure which identifies the correct
electrical supply connection details.
The diameter of the outer sheath of the electrical supply cable must be within the range 7 to 10.5 mm.
The cable must conform in size and colour coding with your local and national electrical installation
regulations. The temperature rating of the cable must be 70 oC or greater.
WARNING
Ensure that the electrical installation of the pump conforms with your local and national
safety requirements. It must be connected to a suitably fused and protected electrical
supply and a suitable earth (ground) point.
CAUTION
Ensure that the motor is correctly configured for your electrical supply voltage and frequency. If you
do not, you can damage the motor.
Pump Item Number Voltage
(V)
Frequency
(Hz)
Connection details:
refer to Figure
A343-15-912, A363-15-912,
A343-15-920, A363-15-920,
A363-15-903, A343-15-903
(all) 50/60 3
A343-15-981, A363-15-981 115
230
60
60
4
5
A343-15-904, A363-15-904 100
100-105
200
200-210
50
60
50
60
4
4
5
5
A343-16-903 (all) 50/60 6
A343-17-984, A363-17-984 (all) 50/60 7
Table 8 – Motor connection details