Edwards A366-04-934, E2M275, A366-07-940, A366-07-934, A367-04-934 Instructions Manual

...

A366-04-880

Original Instructions

Instruction Manual

E2M175 and E2M275

Rotary Vacuum Pumps

Description Item Number

E2M175 Rotary Vacuum Pump, 200 V 50/60 Hz, 380 V 60 Hz, three-phase A366-04-934

E2M175 Rotary Vacuum Pump, 380/400 V 50 Hz, 230/460 V 60 Hz, three-phase A366-04-940

E2M175 Rotary Vacuum Pump, 200 V, 50/60 Hz, 380 V 60 Hz 50/60 Hz, three-phase, Fomblin prepared A366-17-934

E2M175 Rotary Vacuum Pump, 380/400 V 50 Hz, 230/460 V 60 Hz, three-phase, Fomblin prepared A366-17-940

E2M175 Rotary Vacuum Pump, 200 V 50/60 Hz, 380 V 60 Hz 50/60 Hz, three-phase, Azide prepared A366-07-934

E2M175 Rotary Vacuum Pump, 380/400 V 50 Hz, 230/460 V 60 Hz, three-phase, Azide prepared A366-07-940

E2M275 Rotary Vacuum Pump, 200 V 50/60 Hz, 380 V 60 Hz 50/60 Hz, three-phase A367-04-934

E2M275 Rotary Vacuum Pump, 380/400 V 50 Hz, 230/460 V 60 Hz, three-phase A367-04-940

E2M275 Rotary Vacuum Pump, 200 V, 50/60 Hz, 380 V 60 Hz 50/60 Hz, three-phase, Fomblin prepared A367-17-934

E2M275 Rotary Vacuum Pump, 380/400 V 50 Hz, 230/460 V 60 Hz, three-phase, Fomblin prepared A367-17-940

E2M275 Rotary Vacuum Pump, 200 V 50/60 Hz, 380 V 60 Hz 50/60 Hz, three-phase, Azide prepared A367-07-934

E2M275 Rotary Vacuum Pump, 380/400 V 50 Hz, 230/460 V 60 Hz, three-phase, Azide prepared A367-07-940

Issue A

A366-04-880 Issue A

Contents

Section Page

1 Introduction ....................................................................................... 1

1.1 Scope and definitions ................................................................................................... 1

1.2 Description ................................................................................................................ 3

1.3 Gas ballast ................................................................................................................ 3

2 Technical data .................................................................................... 5

2.1 Operating and storage conditions ..................................................................................... 5

2.2 Performance .............................................................................................................. 5

2.3 Mechanical data .......................................................................................................... 8

2.4 Electrical data: three-phase motors .................................................................................. 8

2.5 Lubrication data ......................................................................................................... 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 Connect the pump to the cooling water ............................................................................12

3.6 Fill the pump with oil ..................................................................................................12

3.6.1 Recommended pump oils ..............................................................................................12

3.6.2 Filling procedure ........................................................................................................ 13

3.7 Electrical installation ..................................................................................................13

3.7.1 Connect the pump to your electrical supply ....................................................................... 13

3.7.2 Check the direction of rotation ...................................................................................... 14

3.8 Connect the pump inlet to your system .............................................................................14

3.9 Connect the pump outlet to your system ...........................................................................15

3.10 Gas-ballast inlet connection ..........................................................................................15

3.11 Leak-test the system ...................................................................................................15

Contents

4 Operation ........................................................................................ 17

4.1 Gas-ballast control .....................................................................................................17

4.2 Start-up procedure .....................................................................................................17

4.3 To achieve ultimate vacuum .......................................................................................... 17

4.4 To pump condensable vapours ........................................................................................ 18

4.5 To decontaminate the oil ..............................................................................................18

4.6 Unattended operation ..................................................................................................18

4.7 Shut-down ................................................................................................................18

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

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

5.2 Maintenance plan .......................................................................................................20

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

5.4 Replace the oil ..........................................................................................................21

5.5 Clean the fine oil-filter ................................................................................................22

5.6 Replace the gas-ballast filter .........................................................................................23

5.7 Inspect and clean the inlet-filter .....................................................................................24

5.8 Clean the motor fan-cover ............................................................................................24

5.9 Clean and overhaul the pump .........................................................................................24

5.10 Test the motor condition ..............................................................................................25

5.11 Fit new blades ........................................................................................................... 25

gp/0254/10/14

A366-04-880 Issue A

Contents

5.12 Basic fault-finding ......................................................................................................25

5.12.1 The pump has failed to start .......................................................................................... 25

5.12.2 The pump fails to achieve its specified performance ............................................................. 25

5.12.3 The pump is noisy ....................................................................................................... 26

5.12.4 The pump is too hot ....................................................................................................26

5.12.5 The vacuum is not fully maintained after the pump is switched off ...........................................26

5.12.6 The pumping speed is poor ............................................................................................26

5.12.7 There is an external oil leak ..........................................................................................26

6 Storage and disposal ........................................................................... 27

6.1 Storage ...................................................................................................................27

6.2 Disposal ...................................................................................................................27

7 Service, spares and accessories .............................................................. 29

7.1 Introduction .............................................................................................................29

7.2 Service ....................................................................................................................29

7.3 Spares .....................................................................................................................29

7.4 Accessories ...............................................................................................................30

7.4.1 Inlet dust-filter .......................................................................................................... 30

7.4.2 Inlet catchpot ...........................................................................................................30

7.4.3 High-capacity inlet dust-filter ........................................................................................30

7.4.4 Inlet chemical-trap .....................................................................................................30

7.4.5 Outlet catchpot .........................................................................................................30

7.4.6 Outlet mist-filter (clean applications) .............................................................................. 31

7.4.7 External oil filter .......................................................................................................31

7.4.8 Solenoid-operated gas-ballast control valve .......................................................................31

7.4.9 Thermostatic control valve ............................................................................................31

7.4.10 Vibration isolators ......................................................................................................32

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

Illustrations

Figure Page

1 The E2M175 pump ....................................................................................................... 2

2 Dimensions E2M175 (mm) ............................................................................................... 6

3 Dimensions E2M275 (mm) ............................................................................................... 7

4 Oil level indication .....................................................................................................13

5 Remove and replace filter-element ..................................................................................22

6 Remove and replace gas-ballast filter-elements ...................................................................23

7 Remove and replace inlet-filter ......................................................................................24

8 Accessories ...............................................................................................................32

Edwards and the Edwards logo are trademarks of Edwards Limited.

A366-04-880 Issue A

Tables

Table Page

1 Electrical data ............................................................................................................ 8

2 Maintenance plan .......................................................................................................20

3 Maintenance kits ........................................................................................................ 29

Associated publications

Publication title Publication number

Vacuum pump and vacuum system safety P400-40-100 Ultragrade 15, 19 and 20 oils P110-10-010 Vibration isolators A248-01-880 Oil return kits, MF100 and 300 (for E1M40 to E2M275 pumps) A500-04-880 EOF300 external oil filter A500-09-880 EBV100S, 300D and 300S gas ballast valves A500-18-881 EOF external oil filtration system A540-01-880 EOF adapter kit for E1M/E2M175 and 275 A540-36-880 IT20K, IT100, IT300 and IT800 inlet traps and filters A441-01-880 MF mist filters and CP catchpots A461-03-880

Contents

A366-04-880 Issue A

This page has been intentionally left blank.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A366-04-880 Issue A

CAUTION

WARNING

1Introduction

1.1 Scope and definitions

This manual provides installation, operation and maintenance instructions for the Edwards E2M175 and E2M275 Rotary Vacuum Pumps. You must use your pump as specified in this manual. Read this manual before you install and operate your pump.

Important safety information is highlighted as WARNING and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined below.

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 system of units of measurement.

The following warning symbol is on the pump:

Warning - refer to accompanying documentation.

Warning - risk of electric shock.

Warning - hot surfaces.

A366-04-880 Issue A

1. Gas-ballast control

2. External oil-filter connections

3. Oil filler-plug

4. Outlet-port

5. Inlet-port

6. Motor terminal-box

7. Oil-filter location

8. Oil pressure-gauge

9. Oil-level sight-glass

10. Oil drain-tap

11. Cooling-water connections

Introduction

Figure 1 - The E2M175 pump

Edwards and the Edwards logo are trademarks of Edwards Limited.

A366-04-880 Issue A

1.2 Description

The Edwards rotary vacuum pump is shown in Figure 1. Refer to Figure 1 for item numbers in brackets in the following descriptions.

The E2M175 and E2M275 pumps are two-stage oil-sealed, high-vacuum pumps designed for reliable, long-term operation in both laboratory and industrial environments. A four-pole three-phase motor provides direct-drive through a flexible coupling. The pumps are free-standing mounted on steel runners.

These pumps are not suitable for use with Hazardous substances. These would include:



Pyrophoric gases

Oxygen >25% unless filled with PFPE oil



Chemically Active e.g. Azide forming compounds



Corrosive gases



Flammable mixtures



The E2M pumps are two-stage, oil-sealed, sliding-vane vacuum pumps.

Lubrication is provided by a sliding-vane oil pump. Oil is drawn into the pump through a wire mesh strainer. The oil is pumped to a spring-loaded distributor valve. The distributor valve directs a lightly-pressurised supply of oil to the main vacuum-pump and by-passes the excess back to the oil reservoir. Some of the excess oil is re-directed through a large area, fine-pore filter and some through a relief-valve. When the pump is switched off, the spring-loaded distributor valve provides oil and air suckback protection.

Introduction

You can inspect the level and condition of oil in the oil box through an oil-level sight-glass (9). An oil filler-plug (3) is fitted at the top of the oil box. An oil drain-tap (10) is fitted at the bottom of the oil box.

The pump has an inlet-port (5) with an ISO63 flange and an outlet-port (4) with an ISO40 flange. Connections for an external oil-filter are provided (2) (these are not shown in Figure 1); external oil-filter (outlet) is the top connection and the external oil-filter (return) is the lower connection.

The gas-ballast control (1) allows you to control the introduction of gas-ballast when pumping high vapour loads. Refer to Section 1.3 for more information about gas-ballast.

Your pump is water cooled. Edwards recommend that you use a thermostatic controlled valve to regulate water flow. This will ensure optimum pump working temperature, maintain economies in water use, and provide assistance with gas-ballast protection. The thermostatic control valve is an accessory, refer to Section 7.

Refer to Section 7 for details about vibration isolators and other recommended accessories.

1.3 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. This system reduces oil contamination and pump corrosion caused by condensed vapour from the pumped gases.

You can introduce air or an inert gas into the low vacuum stage of the pump through the gas-ballast inlet (Figure 1, item 1). A filter/silencer is fitted in the gas-ballast system, to prevent the entry of dust into the pump and to improve silencing. You can control the gas-ballast either manually or remotely.

A366-04-880 Issue A

Introduction

For manual control, use the gas-ballast control (Figure 1, item 1). The pumps are supplied with an open-gas-ballast inlet. If you leave this inlet open to the atmosphere, then:

With the gas-ballast control (Figure 1, item 1) open, when you switch the pump off, the pressure inside the



pump will rise to atmospheric pressure.

With the gas-ballast control closed, when you switch off the E2M175 and E2M275 pumps the vacuum will be



maintained inside the pump.

For remote control, fit a solenoid-operated gas-ballast control valve (available as an accessory from Edwards, refer to Section 7) to the gas-ballast inlet and open the gas-ballast control. Connect the gas-ballast valve to your control system so that the valve is closed when the pump is switched off and if the electrical supply to the pump is interrupted. Under these circumstances, when the pump is switched off, the vacuum will be maintained inside the pump.

It should be noted that when the pump is switched off the system pressure is unaffected by the operation of the gas ballast. The vacuum is maintained in the system by closing the pump inlet valve.

For more information about the use of gas-ballast, refer to Section 3.10 and 4.1.

Edwards and the Edwards logo are trademarks of Edwards Limited.

A366-04-880 Issue A

2Technical data

2.1 Operating and storage conditions

Ambient temperature range (operation) 12 to 40°C

Normal surface temperature of the pump

body at ultimate vacuum

ambient temperature of 20°C 50 to 70°C

Maximum humidity (operation) 90% RH

Ambient temperature range (storage) -30 to 70°C

2.2 Performance

Note: Where total pressures are shown in the technical data tables, measurements were taken using an untrapped

total pressure capacitance diaphragm gauge on a header, as specified by Pneurop standards.

E2M175 E2M275

3h-1

(Pa)

3h-1

)

-1

-4

(10-2)

-3

1 x 10

(1 x 10-1)

-3

5 x 10

(5 x 10-1)

0.5

(1.5 x 105)

)(2 x 10

) (12 x 102)

-1

2.4 2.5

-4

(10-2)

-3

1 x 10

(1 x 10-1)

-3

5 x 10

(5 x 10-1)

0.5

(1.5 x 105)

)

Maximum Displacement (m

50 Hz electrical supply 178 292

60 Hz electrical supply 214 350

Maximum Speed – Pneurop (m

50 Hz electrical supply 160 255

60 Hz electrical supply 196 306

Motor rotational speed r.min

50 Hz electrical supply 1,440 1,440

60 Hz electrical supply 1,720 1,720

Ultimate vacuum

without gas-ballast (partial pressure) mbar

without gas-ballast (total pressure) mbar

with full gas-ballast (partial pressure) mbar

Maximum permitted outlet pressure (at full pump throughput)

Maximum water vapour inlet pressure

without thermostatic mbar 4 2

water flow valve (Pa) (4 x 10

with thermostatic water mbar 20 12

flow valve (Pa) (2 x 10

Maximum water vapour pumping rate kgh

Maximum gas-ballast flow m

bar gauge

Technical data

A366-04-880 Issue A

Technical data

Figure 2 - Dimensions E2M175 (mm)

Edwards and the Edwards logo are trademarks of Edwards Limited.

Figure 3 - Dimensions E2M275 (mm)

A366-04-880 Issue A

Technical data

+ 25 hidden pages

Edwards A366-04-934, E2M275, A366-07-940, A366-07-934, A367-04-934 Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual