Edwards E-LAB 2 User manual

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A652–07–880
Issue C Original
Instruction Manual
E-LAB 2 Pumps
Description Item
Number Description Item Number
E-LAB 2 Pump, 110-120/220-240 V, 50/60 Hz,
single-phase A652-07-903 E-LAB 2 Pump, 100/200 V, 50/60 Hz, single-phase A652-07-904
E-LAB 2 Pump, 110-120 V, 50/60 Hz, single-phase A652-07-906

© Edwards Limited 2007. All rights reserved. Page i
Edwards and the Edwards logo are trade marks of Edwards Limited.
Contents
A652–07–880 Issue C
Contents
Section Page
1 Introduction .......................................................................................1
1.1 Scope and definitions ................................................................................................... 1
1.2 Description ................................................................................................................ 2
2 Technical data ....................................................................................5
2.1 Operating and storage conditions ..................................................................................... 5
2.2 Performance .............................................................................................................. 5
2.3 Mechanical data .......................................................................................................... 5
2.3.1 General .................................................................................................................... 5
2.3.2 Noise and vibration data ................................................................................................ 7
2.4 Electrical data ............................................................................................................ 7
2.5 Lubrication data ......................................................................................................... 9
2.6 Materials of construction ............................................................................................... 9
3 Installation ....................................................................................... 11
3.1 Safety .....................................................................................................................11
3.2 System design considerations .........................................................................................11
3.3 Unpack and inspect .....................................................................................................12
3.4 Locate the pump ........................................................................................................12
3.5 Fill the pump with oil ..................................................................................................13
3.6 Fit the outlet oil mist filter ...........................................................................................13
3.7 Fit the gas ballast oil return assembly ..............................................................................13
3.8 Select the gas ballast flow rate (optional) ..........................................................................16
3.9 Fit the inlet catchpot ..................................................................................................18
3.10 Electrical installation ..................................................................................................18
3.10.1 Check and configure the motor .......................................................................................18
3.10.2 Connect the pump to your electrical supply .......................................................................20
3.10.3 Check the direction of rotation ......................................................................................21
3.11 Inlet and outlet connections ..........................................................................................21
3.12 Leak-test the system ...................................................................................................21
4 Operation ........................................................................................ 23
4.1 Start-up procedure .....................................................................................................23
4.2 To achieve ultimate vacuum/pump condensable vapours .......................................................23
4.3 To decontaminate the oil ..............................................................................................24
4.4 Unattended operation ..................................................................................................24
4.5 Shut-down ................................................................................................................24
ITR 20593

A652–07–880 Issue C
Page ii © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Contents
5 Maintenance ..................................................................................... 25
5.1 Safety .....................................................................................................................25
5.2 Maintenance plan .......................................................................................................26
5.3 Check the liquid level in the inlet catchpot ........................................................................26
5.4 Check the pump oil level ..............................................................................................27
5.5 Replace the pump oil ..................................................................................................27
5.6 Inspect the oil mist filter elements ..................................................................................28
5.7 Inspect and clean the pump inlet-filter .............................................................................30
5.8 Inspect the oil return assembly .......................................................................................31
5.8.1 Check the installation of the assembly ..............................................................................31
5.8.2 Unblock the restrictor (if necessary) ................................................................................31
5.8.3 Unblock the air intake (if necessary) ................................................................................31
5.9 Clean the pump oil-level sight-glass .................................................................................32
5.10 Clean the motor fan cover ............................................................................................34
5.11 Clean and overhaul the pump .........................................................................................34
5.12 Test the motor condition ..............................................................................................34
5.13 Fit new blades to the pump ...........................................................................................34
5.14 Fault-finding .............................................................................................................35
5.14.1 The pump has failed to start ..........................................................................................35
5.14.2 The pump has failed to achieve the specified performance (has failed to reach ultimate vacuum) ......35
5.14.3 The pump is noisy .......................................................................................................35
5.14.4 The pump surface temperature is above 100 °C ...................................................................36
5.14.5 The vacuum is not fully maintained after the pump is switched off ...........................................36
5.14.6 The pumping speed is poor ............................................................................................36
5.14.7 There is an external oil leak ..........................................................................................36
6 Storage and disposal ........................................................................... 37
6.1 Storage ...................................................................................................................37
6.2 Disposal ...................................................................................................................37
7 Service and spares .............................................................................. 39
7.1 Introduction .............................................................................................................39
7.2 Service ....................................................................................................................39
7.3 Spares available .........................................................................................................39
For return of equipment, complete the HS Forms at the end of this manual.

© Edwards Limited 2007. All rights reserved. Page iii
Edwards and the Edwards logo are trade marks of Edwards Limited.
Contents
A652–07–880 Issue C
Illustrations
Figure Page
1 The E-LAB 2 Pump ....................................................................................................... 3
2 Dimensions: mm ......................................................................................................... 6
3 Pumping speed curves: speed plotted against inlet pressure ..................................................... 8
4 Fit the inlet trap and oil mist filter ..................................................................................14
5 Fit the gas ballast oil return assembly ..............................................................................15
6 Select the gas ballast flow rate ......................................................................................17
7 Motor voltage configuration ...........................................................................................19
8 The outlet oil mist filter ...............................................................................................29
9 Pump inlet-filter assembly ............................................................................................30
10 Sight-glass assembly ....................................................................................................32
11 Part sectional view of the oil return assembly .....................................................................33
Tables
Table Page
1 Electrical data (pumps with Item Numbers -903 or -906) ......................................................... 7
2 Electrical data (pumps with Item Numbers -904) ................................................................... 7
3 Checklist of components ...............................................................................................12
4 Recommended time-switch settings .................................................................................24
5 Maintenance plan .......................................................................................................26
Associated publications
Publication title Publication number
Vacuum pump and vacuum system safety P300–20–000

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A652–07–880 Issue C
Page iv © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.

© Edwards Limited 2007. All rights reserved. Page 1
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
A652–07–880 Issue C
1Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards E-LAB 2 Pumps
(abbreviated to E-LAB 2 in the remainder of this manual). You must use your E-LAB 2 as specified in this manual.
Read this manual before you install and operate your E-LAB 2.
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.
In accordance with the recommendations of IEC1010, the following warning symbols are on the pump:
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.
Warning - refer to accompanying documents.
Warning - risk of electric shock.
Warning - hot surface.

A652–07–880 Issue C
Page 2 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
1.2 Description
Refer to Figure 1. The E-LAB 2 is a complete laboratory pumping system, which has a two-stage, rotary vane vacuum
pump. An oil mist filter (6) is fitted to the outlet of the pump, to prevent the discharge of oil mist. An inlet catchpot
(4) is fitted to the pump inlet to minimise the ingress of condensable vapours into the pump.
The E-LAB 2 has a gas ballast oil return assembly (16) which continuously returns oil trapped in the mist filter to the
pump.
The vacuum pumping mechanism is oil sealed. You can inspect the level and condition of the oil in the oil-box through
the sight-glass (8). Diagrams on the side panels and on the oil change tag (Figure 2, item 4) give guidance on when
you should change the oil. Two oil filler-plugs (7) and an oil drain-plug (9) are provided on the oil-box.
The pump mechanism is driven directly by a single-phase electric motor through a flexible motor-coupling. The motor
is totally enclosed and is cooled by the motor cooling-fan which directs air along the motor fins. The pumps are cooled
by an additional fan attached to the motor-coupling.
The motor has an on/off switch (12) and 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 (unless you have incorporated suitable control equipment which must be manually reset: see
Section 3.10.2), the motor will restart.
The E-LAB 2 has a gas ballast oil return assembly, which is supplied configured to automatically deliver high gas
ballast flow rate into the pump; this prevents the condensation of vapours in the pumped gases and allows you to use
the E-LAB 2 to pump high vapour loads. If required, you can reduce the gas ballast flow rate into the pump, or switch
off the gas ballast flow.
When the E-LAB 2 is switched off, an inlet-valve seals the inlet and prevents the suck-back of air and oil into the
vacuum system.
The E-LAB 2 has a retractable lifting handle (15) and is mounted on a base plate on rubber feet (11).

© Edwards Limited 2007. All rights reserved. Page 3
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
A652–07–880 Issue C
Figure 1 - The E-LAB 2 Pump
1. Electrical supply connector
2. Voltage indicator
3. Inlet
4. Inlet catchpot
5. Outlet
6. Outlet oil mist filter
7. Oil filler-plugs
8. Oil-level sight-glass
9. Oil drain-plug
10.Oil change tag
11.Rubber feet (4 off)
12.On/off switch
13.Motor fan-cover
14.Correct direction of rotation
15.Lifting handle
16.Gas ballast oil return assembly

A652–07–880 Issue C
Page 4 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
This page has been intentionally left blank.

© Edwards Limited 2007. All rights reserved. Page 5
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
A652–07–880 Issue C
2Technicaldata
2.1 Operating and storage conditions
2.2 Performance
Note: The pumping speed curves for the E-LAB 2 are shown in Figure 3.
2.3 Mechanical data
2.3.1 General
Ambient temperature range (operation) 12 to 40 °C
Normal surface temperature of the pump-body at ultimate vacuum
(operation), ambient temperature of 20 °C 50 to 70 °C
Maximum humidity (operation) 90% RH
Ambient temperature range (storage) -30 to 70 °C
Suckback protection 1 x 10-5 mbar.ls-1, 1 x 10-3 Pa.ls-1
Maximum displacement
50 Hz electrical supply 3.7 m3h-1
60 Hz electrical supply 4.5 m3h-1
Maximum pumping speed, Pneurop 6602 (1979)
50 Hz electrical supply 3.3 m3h-1
60 Hz electrical supply 3.9 m3h-1
Maximum permitted inlet pressure and gas-ballast inlet pressure 1 bar gauge, 2 x 105Pa
Maximum permitted outlet pressure 1 bar gauge, 2 x 105Pa
Ultimate total pressure 1 x 10-1 mbar, 10 Pa
Maximum gas ballast flow 14 l.min-1
Maximum water vapour pumping rate
50 Hz electrical supply 0.095 kg.h-1
60 Hz electrical supply 0.11 kg.h-1
Maximum water vapour inlet pressure 40 mbar, 4 x 103Pa
Overall dimensions See Figure 2
Degree of protection (IEC 34-5: 1981) IP44
Maximum tilt angle 10°
Pump-motor rotational speed
50 Hz electrical supply 1470 r.min-1
60 Hz electrical supply 1760 r.min-1
Maximum mass of pump * 21.6 kg
* Without pump oil, inlet catchpot, outlet mist filter, and gas ballast oil return kit.

A652–07–880 Issue C
Page 6 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
Figure 2 - Dimensions: mm
1. Outlet
2. Inlet 3. Baseplate mounting holes: 4 x M8 4. Oil change tag

© Edwards Limited 2007. All rights reserved. Page 7
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
A652–07–880 Issue C
2.3.2 Noise and vibration data
2.4 Electrical data
Note: We recommend that you use fuses of the maximum ratings specified in Tables 1and 2. You must not use
fuses of a higher rating.
The dual-voltage, dual-frequency motor is designed for a single-phase electrical supply and is suitable for 50 Hz or
60 Hz operation. The motor can be manually switched between nominal supply voltages of 110-120 V and 220-240 V
(refer to Section 3.10.1).
When you start a cold pump, the motor will draw the start-up current shown in Tables 1and 2for up to several
seconds, so you must use a slow-blow fuse to prevent unnecessary fuse failure during pump start-up. Within
five minutes, as the oil in the pump warms up, the current drawn will slowly reduce to the full load current specified
in Tables 1and 2.
Sound pressure, measured at ultimate vacuum 1 metre from the end of the
pump to ISO 11201, 50 Hz electrical supply 50 dB(A)
Vibration severity: measured at the inlet port to ISO 2372 (1974) Class 1C
Table 1 - Electrical data (pumps with Item Numbers -903 or -906)
Nominal supply
(V)
Frequency
(Hz)
Power
(W)
Full load
current (A)
Start-up
current
Maximum
fuse rating (A)
220-240 50 250 2.4 15.6 13
230-240 60 300 2.2 15.2 13
110 50 250 4.6 29.4 20
115-120 60 300 4.4 31.5 20
Table 2 - Electrical data (pumps with Item Numbers -904)
Nominal supply
(V)
Frequency
(Hz)
Power
(W)
Full load
current (A)
Start-up
current
Maximum
fuse rating (A)
200 50 250 2.8 19.4 13
200-210 60 300 2.4 19.5 13
100 50 250 5.4 37.0 20
100-105 60 300 4.6 39.0 20

A652–07–880 Issue C
Page 8 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
Figure 3 - Pumping speed curves: speed plotted against inlet pressure
1. 60 Hz
2. 50 Hz

© Edwards Limited 2007. All rights reserved. Page 9
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
A652–07–880 Issue C
2.5 Lubrication data
Note: Edwards Health and Safety Data sheets for rotary pump oils are available on request.
2.6 Materials of construction
The surfaces of the pump that are exposed to the process vapours pumped are free from copper, zinc and cadmium.
Other materials of construction include cast iron, aluminium, fluoroelastomer, nitrile, chemically resistant polymers,
nickel and stainless steel.
Recommended oil* Edwards Ultragrade 19 (hydrocarbon oil)
Oil capacity
Maximum 0.70 l
Minimum 0.42 l
* To operate the E-LAB 2 when the ambient temperature is outside the limits specified in Section 2.1, you may
need to use a different oil.

A652–07–880 Issue C
Page 10 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
This page has been intentionally left blank.

© Edwards Limited 2007. All rights reserved. Page 11
Edwards and the Edwards logo are trade marks of Edwards Limited.
Installation
A652–07–880 Issue C
3 Installation
3.1 Safety
You must ensure that the E-LAB 2 is suitable for your application. If you have any doubt as to the suitability of the
E-LAB 2 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).
The installation of your E-LAB 2 must be performed by a suitably trained and supervised technician. Obey the safety
instructions listed below when you install the E-LAB 2, especially when youconnect it into an existing system. Details
of specific safety precautions are given at the appropriate point in the instructions.
zWear the appropriate safety-clothing when you come into contact with contaminated components.
zVent and purge your vacuum system before you start installation work.
zEnsure that the installation technician is familiar with the safety procedures which relate to the pump-oil
and the products handled by the E-LAB 2. Take suitable precautions to avoid the inhalation of oil mist and
excessive skin contact with pump-oil, as prolonged exposure can be harmful.
zDisconnect the other components in the pumping system from the electrical supply so that they cannot be
operated accidentally.
zEnsure that you correctly fit the inlet catchpot, outlet oil mist filter and the gas ballast oil return kit, as
described in the following sections.
3.2 System design considerations
Consider the following points when you design your pumping system:
zUse a suitable valve to isolate the E-LAB 2 from your vacuum system if you need to allow the E-LAB 2 to warm
up before you pump condensable vapours, or to provide additional system protection when the E-LAB 2 is
switched off.
zAvoid high levels of heat input to the E-LAB 2 from the process gases, otherwise the E-LAB 2 may overheat
and seize, and cause the motor thermal overload device to open.
zIf you use the E-LAB 2 in a high ambient temperature and have a high gas throughput, the temperature of the
pump-body may exceed 70 °C and you must fit suitable guards to prevent contact with hot surfaces.
zMake sure that the exhaust pipeline cannot become blocked. If you have an exhaust- isolation valve, make
sure that you cannot operate the E-LAB2 with the valve closed.
WARNING
The E-LAB 2 is not recommended for pumping hazardous substances.

A652–07–880 Issue C
Page 12 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Installation
3.3 Unpack and inspect
Remove all packing materials and protective covers and inspect the equipment. If any of the equipment is damaged,
notify your supplier and the carrier in writing within three days; state the Item Number of the E-LAB 2 together with
your order number and your supplier’s invoice number. Retain all the packing materials for inspection. Do not use
the E-LAB 2 if it is damaged.
Check that you have received the items listed in Table 3. If any item is missing, notify your supplier in writing within
three days.
If the E-LAB 2 is not to be used immediately, replace the protective covers. Store the E-LAB 2 in suitable conditions,
as described in Section 6.1.
3.4 Locate the pump
The E-LAB 2 has a lifting handle which you can use to move the pump by hand. If you wish to use mechanical lifting
equipment, do not attach the equipment to the handle; for stability, use slings around the motor and the pump-body.
Provide a firm, level platform for the E-LAB 2. Refer to Figure 1. Locate the E-LAB 2 so that the oil-level sight-glass
(8) and the oil change tag (10) are visible, and so that the oil filler-plug (7) and oil drain-plug are (9) accessible.
If your E-LAB 2 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 °C. There must be a minimum space
of 25 mm between the pump and the enclosure walls.
Table 3 - Checklist of components
Qty Description Check (3)
1 E-LAB 2 Pump (with oil change tag fitted) 
1Oilmistfilter 
1Inletcatchpot 
6 Clamping rings 
4Co-Seals 
1 Centring-ring and ‘O’ ring 
2Elbows 
2 Hose adaptors 
1 Electrical supply cable * 
Gas ballast oil return kit, which contains:
1 Oil return assembly 
1 Drain adaptor 
1Restrictor 
1 Flexible oil-return tube 
2Hoseclips 
* Not supplied with pumps with Item Number A652-07-903: see Section 3.10.2.

© Edwards Limited 2007. All rights reserved. Page 13
Edwards and the Edwards logo are trade marks of Edwards Limited.
Installation
A652–07–880 Issue C
3.5 Fill the pump with oil
Fill the pump with oil as described below. Refer to Section 2 for the recommended oil.
1. Refer to Figure 1. Remove one of the oil filler-plugs (7).
2. Pour oil into the pump until the oil-level just reaches the MAX mark on the bezel at the top of the sight-glass (8).
If the oil-level goes above the MAX mark, remove the drain-plug (9) 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.
3.6 Fit the outlet oil mist filter
1. Refer to Figure 4. Ensure that the pump outlet (17) is clean, then place one of the Co-Seals (15) on the outlet.
2. Place the oil mist filter inlet (14) on the pump outlet, so that the arrow on the lower half of the body
(see Figure 8) point upwards away from the pump outlet, and so that the drain plug points towards the oil
filler-plugs (as shown in Figure 5).
3. Use one of the clamping rings (16) to secure the oil mist filter to the pump.
4. Use another Co-Seal (3) and clamping ring (2) to secure one of the elbows (4) to the mist filter outlet (12);
ensure that the horizontal part of the elbow points towards the front of the pump (as shown in Figure 2).
5. Use another Co-Seal (5) and clamping ring (6) to secure the other elbow (8) to the elbow already fitted; ensure
that the free end of the elbow point vertically downwards, as shown on Figure 4.
6. Use another Co-Seal (9) and clamping ring (10) to secure one of the hose adaptors (11) to the elbow.
3.7 Fit the gas ballast oil return assembly
1. Remove the drain-plug (Figure 8, item 4) from the drain port on the oil-mist filter.
2. Refer to Figure 5. Fit the drain adaptor (8) to the drain port on the oil mist filter.
3. Turn the gas ballast control on the pump (Figure 4, item 18) to position ‘II’. Push the control down (against the
spring), turn the control anticlockwise to release it, then remove the control from the pump. Leave the spring in
position in the gas ballast port in the pump.
4. Lift the pump handle (Figure 1, item 15). Fit the oil return assembly (5) to the gas ballast port on the pump,
push the assembly down (against the spring) and turn the assembly clockwise to secure it to the pump. When the
assembly is correctly secured to the pump, the nozzle (4) should be over position ‘0’ marked on the top of the
pump (see detail B).
5. Cut a suitable length from the flexible oil-return tube. The routing of the tube (3) must be approximately as
shown in Figure 5. When fitted, the tube must not be taut and there must be no tight bends in the tube. Ensure
that the ends of the oil-return tube are free of burrs and that they are squarely cut (that is, the cut faces are at
a right angle to the length of the tube).
6. Fit the restrictor (7) into the end of the tube, then fit the same end of the tube to the drain adaptor on the oil
mist filter.
7. Fit the other end of the tube to the nozzle (4) on the oil return assembly (5).
8. Use the hose clips (2) to secure the ends of the flexible oil-return tube (3).