Edwards E2M0.7, E2M1.5 Instruction Manual

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Instruction Manual

E2M0.7 and E2M1.5 Rotary Vacuum Pumps

A371–22–880

Issue R Original

Description Item Number

3 h-1

E2M0.7 (0.7 m E2M0.7 (0.7 m E2M1.5 (1.5 m E2M1.5 (1.5 m3 h-1, 0.8 ft3 min-1) 220-240 V, 50/60 Hz (Interstage) A371-03-919 E2M1.5 (1.5 m3 h-1, 0.8 ft3 min-1) 100-120 V, 50/60 Hz A371-22-902 E2M1.5 (1.5 m

, 0.4 ft3 min-1) 220-240 V, 50/60 Hz A371-31-919

3 h-1

, 0.4 ft3 min-1) 100-120 V, 50/60 Hz A371-31-902

3 h-1

, 0.8 ft3 min-1) 220-240 V, 50/60 Hz A371-22-919

3 h-1

, 0.8 ft3 min-1) 100-120 V, 50/60 Hz (Interstage) A371-03-902

Declaration of Conformity

We, Edwards Limited, 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 product(s)

E2M0.7 and E2M1.5 Rotary Vacuum Pumps without IEC connector

A371-31-919 A371-22-919 A371-13-930 A371-31-902 A371-13-988 A371-22-902 A371-03-919

to which this declaration relates is in conformity with the following standard(s) or other normative document(s)

EN61010-1:2010* Safety Requirements for Electrical Equipment for

Measurement, Control and Laboratory Use. General Requirements

EN1012-2:1996+A1:2009 Compressors and Vacuum Pumps. Safety Requirements.

Vacuum Pumps EN60034-1:2010 Rotating electrical machines. Rating and performance CAN/CSA-C22.2 No 77:2014# Motors with inherent overheating protection CAN/CSA-C22.2 No 100:2014# Motors and Generators

EN50581:2012 Technical Documentation for the Assessment of Electrical

and Electronic Products with respect to the Restriction of

Hazardous Substances

* 1-phase pumps only. The pumps comply with EN 61010-1 when installed in

accordance with the instruction manual supplied with the

100/120V pumps only. Canadian Standards Association.

pumps.

and fulfils all the relevant provisions of 2006/42/EC Machinery Directive

2014/35/EU Low Voltage Directive 2011/65/EU Restriction of Certain Hazardous Substances (RoHS)

Directive

Note: This declaration covers all product serial numbers from the date this Declaration was

signed onwards.

10.08.2015, Burgess Hill

Mr Peter Meares Senior Technical Support Manager, General Vacuum

This product has been manufactured under a quality management system certified to ISO 9001:2008

Date and Place

P200-00-560 Issue E

A371–22–880 Issue R

Section Page

1 Introduction .......................................................................................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 Electrical data ............................................................................................................ 6

2.5 Lubrication data ......................................................................................................... 7

3 Installation ............................................... ................................... .......9

3.1 Safety ......................................................................................................................9

3.2 System design ............................................................................................................ 9

3.3 Unpack and inspect .....................................................................................................10

3.4 Locate the pump ........................................................................................................10

3.5 Fill the pump with oil ..................................................................................................10

3.6 Electrical installation ..................................................................................................11

3.6.1 Connect the pump to your electrical supply .......................................................................11

3.6.2 Check the direction of rotation ......................................................................................11

3.7 Connect the pump inlet ................................................................................................12

3.7.1 General requirements ..................................................................................................12

3.7.2 Side inlet-port connection .............................................................................................13

3.8 Connect the pump outlet ..............................................................................................13

3.9 Leak-test the system ...................................................................................................13

Contents

4 Operation ........................................................................................ 15

4.1 ATEX directive implications ...........................................................................................15

4.1.1 Introduction .............................................................................................................15

4.1.2 Flammable/pyrophoric materials ....................................................................................15

4.1.3 Gas purges ...............................................................................................................16

4.2 Gas-ballast control .....................................................................................................16

4.3 Start-up procedure .....................................................................................................17

4.4 To achieve ultimate vacuum ..........................................................................................17

4.5 To pump condensable vapours ........................................................................................18

4.6 To decontaminate the oil ..............................................................................................18

4.7 Unattended operation ..................................................................................................18

4.8 Shut-down ................................................................................................................ 18

5 Maintenance ..................................................................................... 19

5.1 Safety information ......................................................................................................19

5.2 Maintenance plan .......................................................................................................19

5.3 Check the oil-level .....................................................................................................20

5.4 Replace the oil ..........................................................................................................20

5.5 Inspect and clean the inlet-filter .....................................................................................21

5.6 Clean or replace the gas-ballast O-ring .............................................................................21

5.7 Clean the motor fan-cover and enclosure ..........................................................................22

5.8 Clean and overhaul the pump .........................................................................................22

cg/8030/0813

A371–22–880 Issue R

Contents

5.9 Fit new blades ...........................................................................................................22

5.10 Replace the capacitor and test the motor ..........................................................................22

5.11 Fault finding .............................................................................................................22

6 Storage and disposal ........................................................................... 25

6.1 Storage ...................................................................................................................25

6.2 Disposal ...................................................................................................................25

7 Service, spares and accessories .............................................................. 27

7.1 Introduction .............................................................................................................27

7.2 Service .................................................................................................................... 27

7.3 Spares .....................................................................................................................27

7.4 Accessories ...............................................................................................................28

7.4.1 Introduction .............................................................................................................28

7.4.2 Inlet catchpot ...........................................................................................................28

7.4.3 Inlet dust filter ..........................................................................................................28

7.4.4 Inlet desiccant trap .....................................................................................................28

7.4.5 Inlet chemical trap .....................................................................................................28

7.4.6 Foreline trap .............................................................................................................28

7.4.7 Outlet mist filter ........................................................................................................30

7.4.8 Oil drain extension .....................................................................................................30

7.4.9 Vibration isolators ......................................................................................................30

7.4.10 Pump inlet or outlet NW25 adaptor .................................................................................. 30

7.4.11 Solenoid operated gas-ballast control valve ........................................................................30

7.4.12 Solenoid operated pipeline valve ....................................................................................30

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

Illustrations

Figure Page

1 The E2M0.7 and E2M1.5 pump ......................................................................................... 3

2 Dimensions: mm (inches) ...............................................................................................7

3 Electrical supply connection ..........................................................................................12

4 Inlet-filter removal and replacement ...............................................................................21

5 Gas-ballast O-ring removal and replacement ......................................................................22

6 Accessories ...............................................................................................................29

Edwards and the Edwards logo are trademarks of Edwards Limited.

A371–22–880 Issue R

Tables

Table Page

1 Operating and storage conditions ..................................................................................... 5

2 Performance data ........................................................................................................ 5

3 Mechanical data .......................................................................................................... 6

4 Electrical data ............................................................................................................ 6

5 Lubrication data ......................................................................................................... 7

6 Checklist of items .......................................................................................................10

7 Maintenance plan .......................................................................................................20

8 Fault finding .............................................................................................................23

9 Spares Item Numbers ...................................................................................................27

10 Accessories Item Numbers .............................................................................................28

Associated publications

Publication title Publication number

Contents

Vacuum Pump and Vacuum System Safety P400-40-100

A371–22–880 Issue R

This page has been intentionally left blank.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A371–22–880 Issue R

CAUTION

WARNING

1Introduction

1.1 Scope and definitions

This manual provides installation, operation and maintenance instructions for the Edwards E2M0.7, and E2M1.5 rotary vacuum pumps. You must use the pump as specified in this manual. Read this manual before you install and ope rate 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.

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

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

Introduction

The units used throughout this manual conform to the SI international sys tem of units of measurement. Equivalent values using imperial units of measurement are also included.

The following warning symbols are on the pump:

Warning - refer to accompanying documentation.

Warning - risk of electric shock.

Warning - hot surfaces.

A371–22–880 Issue R

Introduction

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 pr ocedures should ensure that under all normal and reasonably predictable conditions, these materia ls 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 Edwards: refer to the Addresses page at the end of this manual for details.

Edwards and the Edwards logo are trademarks of Edwards Limited.

Figure 1 - The E2M0.7 and E2M1.5 pump

1. Motor terminal box

2. NW10 centring ring and O-ring (supplied)

3. Handle (removable: refer to Section 3.4)

4. NW10 inlet port (adaptor flange)

5. Gas-ballast control

6. Oil filler-plug

7. Outlet nozzle

8. Pump/motor shaft rotation direction arrow

9. Oil sight-glass and bezel

10.Pump identification label

11.Oil drain-plug

12.Baseplate

13.O-ring

14.Blanking plug (side inlet-port)

15.Removable side panel

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Introduction

A371–22–880 Issue R

Introduction

1.3 Description

The Edwards E2M0.7 and E2M1.5 pump is shown in Figure 1. Refer to Figure 1 for item numbers in brackets in the following descriptions.

The E2M0.7 and E2M1.5 pumps are two-stage, direct drive, sli ding vane pumps . The pump is oil-sealed and designed for reliable, long-term operation. The pump is a free-standing unit. The drive is provided through a coupling by a single-phase motor.

The motor is totally enclosed and is cooled by the motor-cooling fan which directs air along the motor fins. The motors are fitted with 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.

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 oil suckback unless the gas-ballast valve is open. For protection in this case, refer to Section 1.4.

The level and condition of the oil in the oil box reservoir can be inspected through the sight-glass (9). An oil fillerplug (6) is fitted to the top of the oil box. An oil drain-plug (11) is fitted at the bottom of the oil box.

The pump has a carrying handle (3), inlet-port (4), outlet nozzle (7) and gas-ballast control (5). The pump is mounted on a steel baseplate (12) on rubber pads. Details of suitable vibration is olators and other reco mmende d acce ssories are given in Section 7.4.

1.4 Gas-ballast

To pump high vapour loads, gas-ballast is delivered into the pump to prevent condensation of the vapour carried by the pumped gases.

Air (or another gas) can be introduced into the low vacuum stage through the gas-ballast control. The gas-ballast control is a multi-turn valve that can be adjusted, as required, between closed and fully open.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A371–22–880 Issue R

2Technical data

Note: To comply with EN61010 and CSA standards, the pump must be installed and used indoors, and within the

operating conditions specified in Table 1.

2.1 Operating and storage conditions

Table 1 - Operating and storage conditions

Ambient temperature range (operation) 12 to 40°C (53.6 to 104°F) Ambient temperature range (storage) -30 to 70°C (-22 to 158°F) Normal surface temperature of the pump-body

Maximum humidity (operation) 90% RH Maximum altitude (operation) 2000 m (6561 ft) Pollution degree 2 Installation category II

At ultimate vacuum, with ambient temperature of 20°C (68°F).

50 to 70°C (122 to 158°F)

Technical data

2.2 Performance

Note: Where total pressures are shown below, the measurements were taken using an untrapped total pressure

capacitance diaphragm gauge on a header, as specified by Pneurop 6602.

Table 2 - Performance data

Maximum displacement E2M0.7 E2M1.5

3 h-1

50 Hz electrical supply 0.9 m 60 Hz electrical supply 1.1 m

(0.53 ft3 min-1)1.8 m

3 h-1

(0.65 ft3 min-1)2.2 m

Maximum pumping speed – Pneurop

50 Hz electrical supply 0.75 m3 h-1 (0.44 ft3 min-1)1.6 m

3 h-1

60 Hz electrical supply 0.95 m

(0.56 ft3 min-1)2.0 m

Motor rotational speed

50 Hz electrical supply 1400 r min 60 Hz electrical supply 1700 r min

-1

Ultimate vacuum

without gas-ballast (partial pressure) 7 x 10-4 mbar, 7 x 10-2 Pa

(5.2 x 10

-4

Torr)

without gas-ballast (total pressure) 3 x 10-3 mbar, 3 x 10-1 Pa

(2.2 x 10-3 Torr)

-1

with full gas-ballast (partial pressure) 2 x 10

mbar, 2 x 10-1 Pa

(1.5 x 10-1 Torr) Maximum water vapour inlet pressure 15 mbar (11.2 Torr) 15 mbar (11.2 Torr) Maximum water vapour pumping rate 8 g h Maximum permitted outlet pressure

(at full pump throughout)

-1

0.5 bar gauge

1.5 bar absolute

1.5 x 10

Pa (21 .75 psi)

3 h-1

(1.06 ft3 min-1)

3 h-1

(1.30 ft3 min-1)

3 h-1

(0.94 ft3 min-1)

3 h-1

(1.18 ft3 min-1)

2800 r min 3400 r min

5 x 10 (3.7 x 10

-1

-4

mbar, 5 x 10-2 Pa

-4

Torr)

1.5 x 10-3 mbar, 1.5 x 10-1 Pa (1.1 x 10-3 Torr)

2.5 x 10-2 mbar, 2.5 Pa (1.9 x 10-2 Torr)

-1

16 g h

0.5 bar gauge

1.5 bar absolute

1.5 x 105 Pa (21.75 psi)

A371–22–880 Issue R

Technical data

2.3 Mechanical data

Table 3 - Mechanical data

Approximate pump mass 10 kg (22 lbs) Dimensions Refer to Figure 2 Degree of protection (IEC34-5:1981) IP54

Pump inlet port NW10 (the flange can b e re mov ed f rom t he Pump outlet port 11 mm external diameter nozzle (the nozzle can be removed from

Noise level at 1 metre 54 dB(A)

/8 inch BSP tapped hole)

the

2.4 Electrical data

The motor start-up current is drawn for less than one second, therefore slow-blow fuses must be used to prevent unnecessary fuse failure when the pump starts. If the pump is used at temperatures lower than 12°C (53.6°F), the start-up current will be drawn for longer; this may cause the motor thermal overload device to open.

Table 4 - Electrical data

/8 inch BSP tapped hole)

Continuous motor output rating

E2M0.7 0.09 kW E2M1.5 0.16 kW

Motor electrical supply

E2M0.7 Single phase E2M1.5 Single phase

Pump

E2M0.7 110-115 50 1.8 5.7 10

E2M1.5 110-115 50 3.1 12.0 10

Fuses should be EN60269 Section 2.2 or to BS 1362.

Nominal supply

(V)

115-120 60 1.9 5.3 10 220-240 50 1.0 2.8 6 230-240 60 1.0 2.3 6

115-120 60 2.6 11.2 10 220-240 50 1.4 5.5 6 230-240 60 1.3 5.2 6

Frequency

(Hz)

Full load current

(A)

Start-up current

(A)

Maximum fuse

rating (A)

Edwards and the Edwards logo are trademarks of Edwards Limited.

2.5 Lubrication data

A. 160 (6.3) for 220/240 V motors, 189 (7.4) for 110/120 V motors

1. Handle (removable: refer to Section 3.4)

2. 110/120 V motor

Note: An Edwards Safety Data Sheet for Ultragrade 15 is available on request.

Table 5 - Lubrication data

A371–22–880 Issue R

Technical data

Recommended oil Maximum oil capacity 0.32 litre

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 condensable vapours, a different oil may be required.

Figure 2 - Dimensions: mm (inches)

Ultragrade 15

A371–22–880 Issue R

This page has been intentionally left blank.

Edwards and the Edwards logo are trademarks of Edwards Limited.

3 Installation

WARNING

3.1 Safety

If a hydrocarbon oil is used in this pump, do not use the pump to process oxygen in concentrations greater than 25% in volume. There is a risk of fire or explosion in the oil-box of the pump.

Edwards recommend that the E2M0.7 or E2M1.5 pumps are not used to pump hazardous substances.

Obey the safety instructions in this Section and take note of appropriate precautions. If not, injury to people and damage to equipment can result.

Prevent any part of the human body from coming into contact with the vacuum.

A371–22–880 Issue R

Installation

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 publication at the end of the contents list at the front of this manual).

A suitably trained and supervised technician must install your pump. Obey the safety instructions listed below when installing the pump, especially when connecting the pump into an existing system. Details of specific safety precautions are given at the appropriate point in the instructions.

 Wear the appropriate safety-clothing w hen in contact with contaminated components.  Vent and purge the vacuum system before installation work is started.  Ensure that the installation technician is familiar with the safety procedures that relate to the pump-oil and

the products handled 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.

3.2 System design

Consider the following points when designing your pumping system:

 Use a suitable valve to isolate the pump from the vacuum system, if the pump needs to warm up before

condensable vapours are pumped, or if the vacuum needs to be maintained 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 the pump is used in a high ambient temperature and have a high gas throughput, the temperatu re of the

pump-body may exceed 70°C (158°F) and suitable guards must be fitted to prevent contact with hot surfaces.

 Make sure that the exhaust pipeline cannot become blocked. If an exhaust-isolation valve is fitted, make

sure the pump cannot be operated with the valve closed.

 Provide for a purge of inert gas when the pumping system is shut down, 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 (refer to Section 7.4.11).

A371–22–880 Issue R

Installation

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. R etain 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 6. If any of these items is missing, notify your supplier within three 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.

Table 6 - Checklist of items

Quantity Description Check ()

1Rotary vacuum pump 

(1) Fitting pack containing the following:

1 Hexagon wrench, 4 mm  1 Hexagon wrench, 6 mm  1 NW10 centring ring  1 O-ring for centring  1 O-ring for outlet port 

3.4 Locate the pump

The pump can be either free-standing on its b aseplate which is fitted with rubber pads; fixed by four fixing bolt holes in the baseplate; or used with vibration isolators. For the location 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-plug, mode selector and gas-ballast control are accessible.

If the pump is part of a permanent installation the handle can be removed to make the pump more compact. To remove the handle, cut the handle in half, then remove the two halves from the pump.

If the pump will be located inside an enclosure, ensure 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 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 (6).

2. Pour oil int o the pump un til the oil -level just reaches the MAX mark on the bezel at the top of the sight-glass (9). If the oil-level goes above the MAX mark, remove the 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.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A371–22–880 Issue R

CAUTION

WARNING

3.6 Electrical installation

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.

Note: The following instructions for connecting the pump to an electrical supply are not applicable to pumps

fitted with an integral (non-detachable) electrical supply cable.

3.6.1 Connect the pump to your electrical supply

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 that must be reset manually.

Ensure that your electrical supply voltage corresponds with the voltage specified on the motor data plate. Refer to

Section 2.4 for fuse recommendations, and refer to Figure 3 for a schematic of the electrical connections. The

diameter of the outer sheath of the supply cable must be wi thin the range 5 to 8 mm. The supply 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°C (158°F) or greater.

Installation

1. Remove the cover from the motor terminal box (Figure 1, item 1). Take out the plastic cable gland which is supplied loose inside.

2. Screw the plastic cable gland into the hole in the side of the motor terminal box. Using a tool this should be tightened to a torque of 3.75 Nm.

3. Thread the supply cables through the gland and connect to the appropriate terminals, as shown in Figure 3. The earth (ground) terminal connection must be tightened to a torque of 2.13 to 2.87 Nm (1.57 to 2.11 lbf ft).

4. Tighten the dome shaped nut on the cable gland until the outer sheath of the cable is firmly gripped. Using a tool this should be tightened to a torque of 2.5 Nm, do not overtighten.

5. Check that the cable connections are correct, then replace the cover on the motor terminal box.

3.6.2 Check the direction of rotation

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

Refer to Figure 1.

1. Watch the motor-cooling fan through the fan cover on the end of the motor.

2. Switch on the electrical supply to the motor for a few seconds.

3. Check that the motor-cooling fan rotates in the direction shown by the arrow (8) on the end of the oil box. If the rotation direction is incorrect, immediately switch off the electrical supply, ch eck the wiring to the pump motor and correct as necessary.

A371–22–880 Issue R

A. Capacitor B. Main motor winding C. Auxiliary motor winding D. Thermal protector E. Earth (ground) L. Live N. Neutral

Earth (ground) connector

1. Motor terminals

2. Motor terminal box

* Colour not significant

Installation

Figure 3 - Electrical supply connection

3.7 Connect the pump inlet

3.7.1 General requirements

To connect the pump to the vacuum system, use either the inlet-port on the top of the pump (Figure 1, item 4) or the inlet-port on the side of the pump (Figure 1, item 14). Refer to the procedure in Section 3.7.2 for instructions on using the side inlet port.

When using either the top or the side inlet-port, it is possible t o:

 Connect to the NW10 flange supplied on the pump; use the centring ring and O-ring supplied.  Remove the NW10 flange and connect to the  Remove the NW10 flange and replace it with a NW25 flange adaptor (available as an optional accessory, see

Section 7.4) and then connect to the NW25 flange.

Take note of the following information when connecting the pump to the vacuum system. Refer to Section 7.4 for details of the accessories mentioned below.

 For optimum pumping speeds, ensure that the pipeline connected to the inlet-port is as short as possible and

has an internal diameter not less than the inlet-port diameter.

 Support the vacuum pipelines to prevent loading of the coupling-joints.

/8 inch BSP threaded hole.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A371–22–880 Issue R

WARNING

 If necessary, incorporate flexible bellows in the system pip elines to redu ce the transmission of vibration and

to prevent loading of coupling-joints. If using flexible bellows, ensure that the bellows used have a maximum pressure rating that is greater than the highest pr essure that can be generated in the system. W e recommend that Edwards flexible bellows are used.

 Use a suitable inlet-filter if condensable vapours are pumped or if the pump is used for very dusty

applications.

 Use a suitable valve to isolate the pump from the vacuum system if pumping condensable vapours or to

maintain vacuum when the pump is switched off.

 Ensure that sealing surfaces are clean and scratch-free.

3.7.2 Side inlet-port connection

Refer to Figure 1. A side inlet-port is available; use the following procedure for instructions on using this port.

1. Carefully remove the side pa nel (15) from the pu mp: use a suitable flat blade screwdriver or similar tool for this purpose. The panel is secured by two nylon rivets.

2. Unscrew and remove the blanking plug (14) with its O-ring (13).

3. Unscrew and remove the adaptor flange (4) and its O-ring and replace it with the blanking plug and O-ring that you removed in Step 2.

Installation

4. Screw the adaptor flange and its O-ring into the side inlet-port.

3.8 Connect the pump outlet

Connect the pump outlet to a suitable treatment plant to prevent the discharge of dangerous gases and vapours to the surrounding atmosphere. Use a catchpot to prevent the drainage of contaminated condensate back into the pump.

To connect the pump to your outlet accessories or to your exhaust treatment plant, you can:

 Connect 10 mm internal diameter vacuum hose or 12 mm internal diameter plastic hose to the outlet nozzle

(Figure 1, item 7).

 Remove the outlet nozzle and connect to the  Remove the outlet nozzle and replace it with an NW25 flange adaptor (available as an optional accessory,

refer to Section 7.4) and then connect to the NW25 flange.

Take note of the following information before connecting to the pump outlet:

 The exhaust system must be configured so that the maximum pressure at the pump outlet does not exceed

0.5 bar gauge (1.5 bar absolute, 1.5 x 10

 In the following circumstances, Edwards recommend an oil mist filter is fitted to the pump outlet

 if the pump is used with the gas-ballast control open

/8 inch BSP tapped hole.

Pa, 21.75 psi) at full pump throughput.

 if the pump is operated with an inlet pressure greater than 10 mbar (7.5 Torr) for extended periods or  if the pump is frequently pumped down from atmospheric pressure.

 The mist filter will trap the oil exhausted from the pump: the oil can be re-used if it is not contaminated.

3.9 Leak-test the system

Leak-test the system and seal any leaks found after the pump is installed, to prevent leakage of substances out of the system and leakage of air into the system.

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WARNING

4 Operation

Do not expose any part of your body to vacuum. If you do, you may be injured.

4.1 ATEX directive implications

4.1.1 Introduction

Operation

4.1.2 Flammable/pyrophoric materials

You must obey the instructions and take note of the precautions given below, to ensure that pumped gases do not enter their flammable ranges.

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.  Use an inert gas purge (for example, a nitrogen purge) to dilute any flammable gases or vapours entering the

pump inlet, and/or use an inert gas purge to reduce the concentration of flammable 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 into the pump gas ballast connection to prevent the condensation of flammable

vapours within the pump mechanism and exhaust pipeline.

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WARNING

Operation

4.1.3 Gas purges

If inert gas purges are used to dilute dangerous gases to a safe level, ensure that the pump is shut down if an inert gas supply fails.

You must obey the instructions and take note of the precautions given below, to ensure that pumped gases do not enter their flammable ranges.

Switch on the inert gas purge to remove air from the pump and the exhaust pipeline before the process starts. Switch off the purge flow at the end of the process only after an y remaining flammable gases or vapours have been purged from the pump and exhaust pipeline.

If liquids that produce flammable vapours could be present in the pump foreline, then the inert gas purge to the pump should be left on all the time this liquid is present. Flammable liquids could be present in the foreline as a result of condensation, or may be carried over from the process.

When calculating the flow rate of inert gas required for dilution, consider the maximum flow rate for the fla mmable gases/vapours that could occur. For example, if a mass flow controller is used to supply flammable gases to the process, assume a flow rate for flammable gases that could arise if the mass flow controller is fully open.

Continually measure the inert gas purge flow rate: if the flow rate falls below that required, you must stop the flow of flammable gases or vapours into the pump.

Note: We recommend that you obtain and read the Vacuum Pump and Vacuum System Safety manual (publication

number P400-40-100), available from Edwards or your supplier.

4.2 Gas-ballast control

Use the gas-ballast control (Figure 1, item 5) to change the amount of air (or inert gas) introduced into the low vacuum stage of the pump. Use of the gas-ballast will prevent the condensation of vapours in the pump; the condensates would contaminate the oil.

Use the gas-ballast control closed:

 to achieve ultimate vacuum  to pump dry gases.

Turn the gas-ballast control six turns anti-clockwise to open it fully. Use the gas-ballast control open:

 to pump high concentrations of condensable vapour  to decontaminate the oil.

When you operate the pump with the gas-ballast control open, there will be an increased rate of oil loss from the pump.

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A371–22–880 Issue R

WARNING

4.3 Start-up procedure

Ensure that your system design does not allow the exhaust pipeline to be blocked.

If the oil is contaminated, or if the pump temperature is below 12°C (54°F), or if the electrical supply voltage is more than 10% below the lowest voltage specified for the pump, the pump may operate at a reduced speed for a few minutes. If the pump continues to operate at reduced speed, the motor thermal overload device will open and stop the pump. When the motor has cooled, the thermal overload device will reset automatically and the pump will restart.

1. Check that the pump oil-level is between the MAX and MIN marks on the bezel of the oil-level sight-glass; if it is not, refer to Section 5.3.

2. Turn the gas-ballast control to the required position (refer to Section 4.2).

3. Switch on the electrical supply to the pump.

4. Check that the oil-level in the sight-glass drops slightly (3 to 5 mm, 0.1 to 0.2 inches) afte r start-up . This sho ws that the pump has primed with oil.

Operation

5. If the pump fails to prime, operate the pump with the inlet open to atmosphere for approximately 30 seconds. Then isolate the inlet and check that the oil-level drops by 3 to 5 mm (0.1 to 0.2 inches).

6. To achieve ultimate vacuum, to pump condensable vapours or to decontaminate the pump oil, refer to the procedures in Sections 4.4, 4.5 and 4.6 respectively. Otherwise, open the vacuum system isolation-valve.

4.4 To achieve ultimate vacuum

If the pump does not achieve the performance specified in Section 2.2, make sure that this is not due to your system design before you contact your supplier or Edwards for advice, In pa rticular, the vapour pressure of all mate rials used in your vacuum system (including pump oil, see below) must be much lower than the specified ultimate vacuum of the pump. Refer to Table 8 for a list of possible causes for failure to achieve the specified performance; note however that the most common causes are:

 The pressure measurement technique or gauge head is unsuitable or the gauge head is faulty.  Oil other than that recommended has been used and the vapour pressure of the oil is higher than the

specified ultimate vacuum of the pump.

Use the following procedure to achieve ultimate vacuum:

1. Isolate the pump from your vacuum system.

2. Turn the gas-ballast control fully anti-clockwise (fully open) and operate the pump for at least 1 hour (or overnight) to thoroughly purge the oil of contaminants.

3. Close the gas-ballast control.

4. Open the vacuum system isolation-valve and pump down to ultimate vacuum.

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Operation

4.5 To pump condensable vapours

Use gas-ballast (open the gas-ballast control) when there is a high proportion of condensable vapours in the process gases.

1. Close the vacuum system isolation-valve.

2. Turn the gas-ballast control anti-clockwise to the fully open position, and operate the pump for 30 minutes to warm the oil; this will help to preven t vapour condensation in the pump.

3. Open the vacuum system isolation-valve and continue to operate the pump with the gas-ballast control open.

After condensable vapours have been pumped, decontaminate the oil (if necessary); use the procedure in

Section 4.6.

4.6 To decontaminate the oil

The oil in the pump should be clear, if the oil is cloudy or discoloured, it is contaminated with process vapours.

1. Look at the condition of the oil in the oil sight-glass (Figure 1, item 9). If the oil is cloudy or discoloured, continue with the procedure at Step 2 below.

2. Close the vacuum system isolation-valve.

3. Turn the gas-ballast control fully anti-clockwise.

4. Operate the pump until the oil is clear.

4.7 Unattended operation

The pump is designed for unattended operation under the normal operating conditions specified in Section 2. However, Edwards recommend checking the pump at a regular interval of not more than 14 days; check the pump more frequently if pumping high volumes of gas or if operating the pump with the gas-ballast control open.

The motor is protected by an overload device which isolates the pump from the electrical supply when critical temperature or current levels are exceeded. The overload device resets automatically when the motor has cooled. When checking the pump, make sure that the pump is not going through a repetitive cycle of thermal overload failures and automatic resets. If necessary reduce the thermal load from the pumped gases, to prevent overheating of the pump.

4.8 Shut-down

Note: If the gas-ballast control is open and the motor is switched off for any reason, the pump drive shaft may

rotate in the reverse direction, causing a system pressure rise. To prevent this, use a gas-ballast control valve (refer to Section 7.4.11).

Edwards recommend, as described in the procedure below, that the oil is decontaminate d before the p ump is shut down; this will prevent damage to the pump by the contaminates in the oil.

1. Refer to Section 4.6 and decontaminate the oil, as required.

2. Close the vacuum system isolation-valve (if not already closed).

3. Close gas-ballast (that is, turn the gas-ballast control clockwise).

4. Switch off the electrical supply to the pump.

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WARNING

5Maintenance

5.1 Safety information

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

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

requirements.

 Ensure that the maintenance technician is familiar with the safety procedures which relate to the pump-oil

and the products processed by the pumping-system.

 Allow the pump to cool to a safe temperature before starting maintenance work.  Isolate the pump and other components in the pumping system from the electrical supply so that they can

not be operated accidentally.

 After maintenance is completed, recheck the pump rotation direction if the electrical supply has been

disconnected.

Maintenance

 Do not reuse O-rings and seals if they are damaged.  The pump and its fluid will be contaminated with the process chemicals that have been pumped during

operation. Ensure that the pump is decontaminated before maintenance and that adequate precautions are taken to protect people from the effects of dangerous substances if contamination has occurred.

 Do not touch or inhale the thermal breakdown products of fluorinated materials which may be present if the

pump has been heated to 260°C (500°F) and above. These breakdown products are very dangerous. Fluorinated materials in the pump may include oils, greases and seals. The pump may have overheated if it was misused, if it malfunctioned or if it was in a fire. Edwards Material Safety Data Sheets for fluorinated materials used in the pump are available on request: contact your supplier or Edwards.

 Leak-test the system after maintenance work is complete if you have connected or disconnected any vacuum

or exhaust joints; seal any leaks found.

5.2 Maintenance plan

The plan shown in Table 7 details the routine maintenance operations necessary to maintain the pump in normal use. Instructions for each operation are given in the section shown.

More frequent maintenance may be required if the pump is used to proces s corrosive or abrasive gase s and vapours; in these circumstances, Edwards recommend that the pump seals are replaced every year. If necessary, adjust the maintenance plan according to your experience.

When maintaining the pump, use Edwards spares and maintenance kits; these contain all of the components necessary to complete maintenance operations successfully. The Item Numbers of the spares and kits are given in

Section 7.

Examine the condition of any external accessories, filters or traps (if fitted) when maintaining the pump. Refer to the instructions supplied with the accessories for the necessary maintenance procedures.

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Maintenance

Table 7 - Maintenance plan

Operation Frequency Refer to Section

Check the oil-level Monthly 5.3 Replace the oil Every 3000 hours of operation 5.4 Inspect and clean the inlet-filter Every oil change 5.5 Clean or replace the gas-ballast O-ring Every oil change 5.6 Clean the motor fan-cover Yearly 5.7 Clean and overhaul the pump Every 15000 hours of operation 5.8 Fit new blades Every 30000 hours of operation 5.9 Replace the capacitor Every 4 years 5.10 Test the motor condition Every 15000 hours of operation 5.10

5.3 Check the oil-level

Note: If required, the oil-level can be checked while the pump is operating, however the pump must be switched

off and isolated and other components in the pumping system from the electrical supply before oil is poured into the pump.

Refer to Figure 1 for the items in brackets.

1. Check that the oil-level in the sight-glass (9) is between the MAX and MIN level marks on the bezel of the sightglass.

2. If the oil-level is near to or below the MIN level mark, remove the filler-plug (6) and pour more oil into the reservoir until the oil reaches the MAX level mark. If the oil-level goes above the MAX mark, remove the drainplug (11) and drain the excess oil from the pump. Refit the filler-plug.

3. If the oil is contaminated, drain and refill the pump with clean oil as described in Section 5.4.

5.4 Replace the oil

Refer to Figure 1 for the items in brackets.

1. Operate the pump for approximately ten minutes to warm the oil, then switch off the pump. (this lowers the viscosity of the oil and enables it to be drained from the pump more easily).

2. Isolate the pump from your electrical supply and disconnect it from the vacuum system.

3. Remove the oil filler-plug (6).

4. Place a suitable block under the pump-motor to tilt the pump and place a suitable container under the drainplug (11). Remove the drain-plug and allow the oil to drain into the container.

5. If the oil is dirty or contaminated, pour clean oil into the pump and allow it to drain out of the pump. Repeat this step until the oil reservoir is clean.

6. Refit the drain-plug, remove the block and reconnect the pump to the vacuum system.

7. Fill a suitable container with clean oil and pour the oil into the filler hole until the oil-level reaches the MAX level mark on the bezel of the sight-glass (9).

8. Allow a few minutes for the oil to drain into the pump. If necessary, add more oil. Refit the filler-plug.

Edwards and the Edwards logo are trademarks of Edwards Limited.

5.5 Inspect and clean the inlet-filter

1. Inlet adaptor

2. Inlet-filter

3. O-ring

1. Refer to Figure 4. Unscrew the inlet adaptor (1) and remove the inlet-filter (2) and O-ring (3).

2. Wash the filter in a suitable cleaning solution. Allow the filter to dry.

3. Refit the O-ring (3), inlet-filter (2) and inlet adaptor (1).

Figure 4 - Inlet-filter removal and replacement

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Maintenance

5.6 Clean or replace the gas-ballast O-ring

Note: The filter element (Figure 5, item 3) is retained in its seating with adhesive; do not try to remove it.

Refer to Figure 5.

1. Unscrew and remove the gas-ballast control (1).

2. Remove the O-ring (2) from the control.

3. Wash the O-ring in a suitable cleaning solution. Replace the O-ring if it is damaged.

4. Fit the O-ring carefully on its seat. Screw the gas-ballast co ntrol back into the pump, and reset to the required position.

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1. Gas-ballast control

2. O-ring

3. Filter element

Maintenance

Figure 5 - Gas-ballast O-ring removal and replacement

5.7 Clean the motor fan-cover and enclosure

If the motor fan-cover and enclosure are not kept clean, the air-flow over the motor can be restricted and the pump may overheat.

1. Switch off the pump and disconnect it from the electrical supply.

2. Use a dry cloth and a soft brush to remove dirt and deposits from the fan-cover and enclosure.

5.8 Clean and overhaul the pump

Clean and overhaul the pump as described in the instruction supplied with the clean and overhaul kit (refer to

Section 7.3).

5.9 Fit new blades

Fit new blades to the pump as described in the instructions supplied with the blade kit (refer to Section 7.3).

5.10 Replace the capacitor and test the motor

Replace the capacitor as described in the instructions supplied with the capacitor kit. Test the earth (ground) continuity and the insulation resistance of the pump motor, in accordance with local

regulations for periodic testing of electrical equipment. Edwards recommends that:

 The earth (ground) continuity is less than 0.1 Ω.  Insulation resistance is greater than 10 MΩ.

If the motor fails these tests, the motor must be replaced.

5.11 Fault finding

A list of fault conditions and their possible causes is provided in Table 8 to assist in basic fault-finding. If unable to rectify a fault when using this guide, call your supplier or your nearest Edwards Service Centre for advice.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A371–22–880 Issue R

Table 8 - Fault finding

Fault condition Possible cause

The pump has failed to start The electrical supply fuse has failed.

The motor is incorrectly wired. The operating voltage does not match that of the motor. The exhaust filter or exhaust line is blocked. The oil temperature is below 12°C (53.6°F). The oil is too viscous. The oil is contaminated. The pump is seized after long storage, or has been left to stand

after pumping contaminants. The motor is faulty.

The pump failed to achieve specified performance (Failure to reach ultimate vacuum)

The pump is noisy The motor fan-cover is damaged.

The pump surface temperature is above 100°C (212°F)

The vacuum is not maintained after the pump is switched off

The pumping speed is poor The connecting pipelines are too small in diameter.

Your measuring technique or gauge is unsuitable. There is a leak in the external vacuum system. The gas-ballast control is open. The oil level is too low. You have filled the pump with the wrong type of oil. The oil is contaminated. The pump has not primed. The vacuum fittings are dirty. The inlet-filter is blocked. The pump has not warmed up.

The motor bearings are worn. The oil is contaminated with solid particles. One of the pump blades is sticking. The ambient temperature is too high. The cooling-air supply is insufficient or is too hot. The cooling-air supply is blocked. The electrical supply voltage is too high. The exhaust filter or exhaust line is blocked. The oil level is too low. The pump is filled with the wrong type of oil. The oil is contaminated. The process gas is too hot, or the throughput is too high. The gas-ballast control is open. O-ring (s) are damaged or missing. The shaft seals have deteriorated.

The connecting pipelines are too long. The inlet-filter is blocked.

Maintenance

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Maintenance

Table 8 - Fault finding (continued)

Fault condition Possible cause

There is an external oil leak The oil pump shaft seal is worn or damaged.

The oil box O-ring has deteriorated. There is an oil leak from gas-ballast control. There is an oil-leak from the drain-plug.

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CAUTION

6 Storage and disposal

6.1 Storage

Observe the storage temperature limits stated in Section 2.1. Storage below -30°C (-22°F) will permanently damage the pump seals.

Note: If the new pump is to be stored in conditions of high humidity, remove the pump from the packaging and

dispose of the packaging in accordance with the instruction in Section 6.2.

Use the following procedure to store the pump:

1. Shut-down the pump as described in Section 4.8.

2. Disconnect the pump from the electrical supply.

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

4. Replace the oil as described in Section 5.4.

Storage and disposal

5. Place and secure protective covers over the inlet and outlet-ports.

6. Store the pump in cool, dry conditions until required for use.

When required, prepare and install the pump as described in Section 3. If the pump has been stored for more than a year, clean and overhaul the pump before installing it, as described in the instructions supplied with the clean and overhaul kit.

6.2 Disposal

Dispose of the pump, the oil and any components removed from the pump safely in accordance with all local and national safety and environmental requirements.

Take particular care with the following:

 Components which have come into contact with the pump fluid.  Components which have been contaminated with dangerous process substances.

Do not incinerate fluoroelastomer seals and O-rings.

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7 Service, spares and accessories

7.1 Introduction

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

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

 Model and Item Number of your equipment  Serial number  Item Number and description of part.

7.2 Service

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

Service, spares and accessories

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

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

7.3 Spares

The maintenance kits listed in Table 9 contain all of the parts you will need to maintain your pump. The maintenance kits also include instructions for the use of the kits.

Use the Clean and Overhaul Kit for routine maintenance operations. Use the Blade Kit togeth er with the Clean and Overhaul Kit when the blade assembly in the rotary pump must be renewed.

Table 9 - Spares Item Numbers

Maintenance kit Item Number

E2M0.7/E2M1.5 Clean and Overhaul Kit A371-01-131 E2M0.7/E2MI.5 Blade Kit A371-01-132 Ultragrade 15 oil, 1 litre H110-26-015 Capacitor kit for part numbers A371-31-902 / A371-22-902 / A371-03-902 (110-120 V 30 μF) A505-84-808 Capacitor kit for part numbers A371-31-919 / A371-22-919 / A371-03-919 (220-240 V 8 μF) A505-84-809

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Service, spares and accessories

7.4 Accessories

7.4.1 Introduction

A comprehensive range of accessories is available for the pumps, as shown in Figure 6. Table 10 lists the Item Numbers of these accessories, and the accessories are briefly de scribed in Sections 7.4.2 to 7.4.12.

Table 10 - Accessories Item Numbers

Accessory Refer to Section Item Number

IT020K Inlet catchpot ITF20K Inlet dust filter ITD20K Inlet desiccant trap ITC20K Inlet chemical trap 7.4.5 A444-10-000 FL20K Foreline trap EMF3 Outlet mist filter 7.4.7 A462-20-000 Oil drain extension 7.4.8 A505-03-000 Vibration isolators (pack of four) 7.4.9 A248-01-407 NW25 Pump inlet/outlet adaptor 7.4.10 A371-01-028 EBV20 gas-ballast control valve

220/240 V, single-phase, 50/60 Hz 100/120 V, single-phase, 50/60 Hz

PV10EK pipeline valve

200/240 V, single-phase, 50/60 Hz 110/127 V, single-phase, 50/60 Hz

These accessories require an NW25 adaptor: refer to Section 7.4.10.

7.4.2 A441-10-000

7.4.3 A442-15-000

7.4.4 A445-10-000

7.4.6 A133-05-000

7.4.11

7.4.12

A500-06-930 A500-06-984

C411-01-000 C411-03-000

7.4.2 Inlet catchpot

The inlet catchpot traps any liquid droplets and prevents their entry into the pump.

7.4.3 Inlet dust filter

The inlet dust filter protects the pump against abrasive dust.

7.4.4 Inlet desiccant trap

Use a desiccant trap when you pump limited quan tities of water vapour at high pumping speeds to a low vapour pressure.

7.4.5 Inlet chemical trap

The inlet chemical trap protects the pump against chemically active gases.

7.4.6 Foreline trap

Use a Foreline trap on a clean pumping system to prevent back-migration of rotary pump oil vapour into the vacuum system.

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Figure 6 - Accessories

1. Inlet catchpot

2. Inlet dust filter

3. Inlet desiccant trap

4. Inlet chemical trap

5. Foreline trap

6. Solenoid operated pipeline valve

7. Solenoid operated gas-ballast valve

8. Outlet mist filter

9. Flange adaptor kit

10.Vibration is olators

11.Oil drain extension

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Service, spares and accessories

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Service, spares and accessories

7.4.7 Outlet mist filter

The outlet mist filter separates and traps oil droplets to prevent oil mist discharge from the pump outlet.

7.4.8 Oil drain extension

Fit the oil drain extension between the oil drain port on the pump and the oil drain-plug to make the drainage of oil from the pump easier. The pack includes an oil drain extension tube for use when oil is gravity drained.

7.4.9 Vibration isolators

The vibration isolators reduce transmission vibration and noise when the pu mp is floor or frame mounted, and helps to reduce strain when the mounting area is uneven.

7.4.10 Pump inlet or outlet NW25 adaptor

This is a 3/8 inch BSP to NW25 adaptor, supplied with connection hardwa re. Use this adaptor when the NW10 adaptor fitted to the pump-inlet or the outlet-nozzle fitted to the pump outlet are removed, to adapt the to NW25.

/8 inch BSP thread

7.4.11 Solenoid operated gas-ballast control valve

The valve provides remote or automatic on/off control of gas-ballast. The valve can be connected to shut-off ballast to prevent the return of air to the vacuum system when the pump is switched off.

7.4.12 Solenoid operated pipeline valve

Fit the pipeline valve between your vacu um system and the pump inlet to provide addi tional system protection when the pump is switched off.

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Edwards E2M0.7, E2M1.5 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

Illustrations

Tables

Associated publications

1Introduction

1.1 Scope and definitions

1.2 ATEX directive implications

1.3 Description

1.4 Gas-ballast

2Technical data

2.1 Operating and storage conditions

2.2 Performance

2.3 Mechanical data

2.4 Electrical data

2.5 Lubrication data

3 Installation

3.1 Safety

3.2 System design

3.3 Unpack and inspect

3.4 Locate the pump

3.5 Fill the pump with oil

3.6 Electrical installation

3.6.1 Connect the pump to your electrical supply

3.6.2 Check the direction of rotation

3.7 Connect the pump inlet

3.7.1 General requirements

3.7.2 Side inlet-port connection

3.8 Connect the pump outlet

3.9 Leak-test the system

4 Operation

4.1 ATEX directive implications

4.1.1 Introduction

4.1.2 Flammable/pyrophoric materials

4.1.3 Gas purges

4.2 Gas-ballast control

4.3 Start-up procedure

4.4 To achieve ultimate vacuum

4.5 To pump condensable vapours

4.6 To decontaminate the oil

4.7 Unattended operation

4.8 Shut-down

5Maintenance

5.1 Safety information

5.2 Maintenance plan

5.3 Check the oil-level

5.4 Replace the oil

5.5 Inspect and clean the inlet-filter

5.6 Clean or replace the gas-ballast O-ring

5.7 Clean the motor fan-cover and enclosure

5.8 Clean and overhaul the pump

5.9 Fit new blades

5.10 Replace the capacitor and test the motor

5.11 Fault finding

6 Storage and disposal

6.1 Storage

6.2 Disposal

7 Service, spares and accessories

7.1 Introduction

7.2 Service

7.3 Spares

7.4 Accessories

7.4.1 Introduction

7.4.2 Inlet catchpot

7.4.3 Inlet dust filter

7.4.4 Inlet desiccant trap

7.4.5 Inlet chemical trap

7.4.6 Foreline trap

7.4.7 Outlet mist filter

7.4.8 Oil drain extension

7.4.9 Vibration isolators

7.4.10 Pump inlet or outlet NW25 adaptor

7.4.11 Solenoid operated gas-ballast control valve

7.4.12 Solenoid operated pipeline valve