Edwards E2M28 User manual

A373-01-840

Issue J

Instruction Manual

E2M28 Rotary Pump Maintenance Kits

Description Item Number

Clean and Overhaul Kit (Hydrocarbon filled pumps) A373-01-131

Blade Kit for E2M28 A373-01-135

Clean and Overhaul Kit (PFPE (Fomblin) filled pumps) A373-01-136

Edwards and the Edwards logo are trademarks of Edwards Limited.

Contents

A373-01-840 Issue J

Contents

Section Page

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

2 Parts in the clean and overhaul kit ............................................................ 3

3 How to use the clean and overhaul kit ........................................................ 9

4 Parts in the blade kit ........................................................................... 11

5 How to use the blade kits ..................................................................... 13

Appendix A1 Pre O-ring sealed oilbox superceded assemblies ................................... 15

A1.1 2 Parts in the clean and overhaul kit ...............................................................................17

A1.2 4 Parts in the blade kit ................................................................................................18

A1.3 2.1 Sight glass assembly ...............................................................................................18

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

Illustrations

Figure Page

1 Kit items (HV and LV stators) .......................................................................................... 6

2 Kit items (adaptor and oil box) ........................................................................................ 7

3 Kit items (motor and adaptor plate) .................................................................................. 8

A1 Figure 3 - E2M18/28 Interim oil sight glass assembly .............................................................18

A2 Figure 2 - Kit items (adaptor and oil box) ..........................................................................19

A3 Figure 4 - Kit items (motor and adaptor plate) ....................................................................20

Tables

Table Page

1 Clean and overhaul kit items- hydrocarbon filled pumps ......................................................... 3

2 Clean and overhaul kit items- PFPE filled pumps ................................................................... 4

3 E2M28 blade kit items ..................................................................................................11

A1 Table 1 - Clean and overhaul kit items ..............................................................................17

A2 Table 3 - E2M28 Blade Kit items ......................................................................................18

dcs/7968/04/08

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A373-01-840 Issue J

Edwards and the Edwards logo are trademarks of Edwards Limited.

Introduction

A373-01-840 Issue J

1Introduction

These instructions apply to the Clean and Overhaul Kits and Blade Kit for Hydrocarbon filled rotary pumps and PFPE

(Fomblin) filled pumps. When ordering or installing these kits care must be taken to ensure that the correct clean

and overhaul kit is used. Due to the more aggressive nature of Fomblin lubricants it is essential that only the Fomblin

kit is only used on PFPE prepared pumps. Failure to do so could result in damage to the pump or cause injury to

people.

The Blade Kit is compatible for use in both Hydrocarbon and PFPE filled pumps.

PFPE (Fomblin) oil has different properties from other pumps, therefore:

zTake additional care if you suspect that the pump (and hence the PFPE oil) has overheated.

zDo not touch or inhale the thermal breakdown products of PFPE oil, which may be present, if the pump has

been heated to 260 °C and above. PFPE oils are safe in normal use but can decompose into very dangerous

substances if they are heated to 260 °C and above. The pump may have overheated if it was misused, if it

malfunctioned, or if it was in a fire. Material Safety Data Sheets for PFPE oils used in the pump are available

on request: contact your supplier or Edwards.

zIf you fill your PFPE-prepared EM pump with Fomblin oil, we recommend that you regularly check for oil

leaks, particularly around the shaft seals.

zIf you detect an oil leak, contact your supplier or Edwards for advice.

CAUTION

Never mix Hydrocarbon and PFPE lubricants.

Never use Hydrocarbon lubricants in a PFPE-prepared pump.

zWe recommend that you use all the items in the Clean and Overhaul Kit when you service the pump,

particularly all rubber components. The items supplied in the kit are listed in Ta b l e 1 and 2. These items are

illustrated in Figure 1 to 3. Instructions for the use of the kit are given in Section 3. Kit items are grouped

and packed in separate bags to aid identification.

zUse a Blade Kit together with a Clean and Overhaul Kit when you must replace rotary pump blades. You must

renew all blade assembly items with those supplied in the Blade Kit. The items supplied in the Blade Kit are

listed in Ta b l e 3 . These items are illustrated in Figure 1. Instructions for the use of the Blade Kit are given in

Section 5.

WARNING

The mass of the pump is 44 kg; Use suitable lifting equipment to move the pump. If you do not,

you can injure yourself or damage the pump.

A373-01-840 Issue J

Edwards and the Edwards logo are trademarks of Edwards Limited.

This page has been intentionally left blank.

Edwards and the Edwards logo are trademarks of Edwards Limited.

Parts in the clean and overhaul kit

A373-01-840 Issue J

2 Parts in the clean and overhaul kit

Note: If you are in doubt about which oil your pump is compatible with, contact your supplier or Edwards for

advice.

Table 1 - Clean and overhaul kit items- hydrocarbon filled pumps

Bag Pack

Reference Item No.

Description

Size (mm) and feature (if applicable)

Length x diameter (x width)

* = inside diameter

(x)= number of coils in a spring

O-ring dimensions relate to I.D. x section

Quantity

supplied

Bag 1 36 Exhaust warning label 1

64 Seal 111 x 29 x 2 (nitrile) 1

66 Oil box gasket 1

Oil box O-ring 194.5 I.D. x 3 sect 1

67 Sight glass gasket 1

Sight glass O-ring 69.5 I.D. x 3 sect 1

102 O-ring 11.1 x 1.6 2

O-ring 14.1 I.D. x 1.6 1

103 O-ring 28.2 x 3.5 (fluoroelastomer) 2

Bag 2 17 Filter seal 28.8 O.D. x 3.2 2

18 Gas ballast filter pad 2

19 Gas ballast gauze 2

38 Felt pad 1

39 Oil filter assembly 1

58 Coupling element 1

91 Inner shaft seal 30 x 40 x 7 (fluoroelastomer) 1

92 Outer shaft Simrit seal 25.0 x 35.0 x 5.8 (fluoroelastomer) 1

93 O-ring 6.6 x 2.4 7

96 O-ring 29.5 x 3.0 1

98 O-ring 44.5 x 3.0 2

99 O-ring 79.5 x 3.0 1

100 O-ring 89.5 x 3.0 1

101 Dowty O-ring 107 x 2.6 1

Bag 3 65 Gasket 1

89 Dowty seal 2BA 1

90 Dowty seal 1

94 Gas ballast O-ring 13.6 x 2.4 (fluoroelastomer) 1

95 Gas ballast O-ring 15.6 x 2.4 (fluoroelastomer) & drain plug 2

97 Inlet O-ring 35.5 x 3.0 1

A373-01-840 Issue J

Edwards and the Edwards logo are trademarks of Edwards Limited.

Parts in the clean and overhaul kit

Bag 4 21 Gas ballast valve 1

57 Valve pad 3

59 Exhaust spring 28.9 x 14 *(14) 1

61 Valve spring H.V. 30 x 9 *(10) 2

104 O-ring 7.9 x 2.6 (fluoroelastomer) 2

Bag 5 60 Distributor spring 14 x 10.3 *(5) 1

63 Distributor rubber 1

147 Waved washer 1

Table 2 - Clean and overhaul kit items- PFPE filled pumps

Bag Pack

Reference Item No.

Description

Size (mm) and feature (if applicable)

Length x diameter (x width)

* = inside diameter

(x)= number of coils in a spring

O-ring dimensions relate to I.D. x section

Quantity

supplied

Bag 1 36 Exhaust warning label 1

66 Oil box O-ring 194.5 I.D. x 3 sect 1

67 Sight glass ‘O’ ring 69.5 I.D. x 3 sect 1

102 O-ring 14.1 I.D. x 1.6 1

103 O-ring 1.109 I.D. x 0.139 (Viton) 2

Bag 2 17 Filter seal 28.8 O.D. x 3.2 2

18 Gas ballast filter pad 2

19 Gas ballast gauze 2

38 Felt pad 1

39 Oil filter assembly 1

58 Coupling element 1

91 Inner shaft seal 30 x 40 x 7 (fluoroelastomer) 1

92 Outer shaft oil seal 25.0 x 35.0 x 5.8 (Viton) 1

93 O-ring 6.6 x 2.4 (Nitrile) 7

96 O-ring 29.5 x 3.0 (Nitrile) 1

98 O-ring 44.5 x 3.0 (Nitrile) 2

99 O-ring 79.5 x 3.0 (Nitrile) 1

100 O-ring 89.5 x 3.0 (Nitrile) 1

101 Dowty O-ring 107 x 2.6 1

Table 1 - Clean and overhaul kit items- hydrocarbon filled pumps (continued)

Bag Pack

Reference Item No.

Description

Size (mm) and feature (if applicable)

Length x diameter (x width)

* = inside diameter

(x)= number of coils in a spring

O-ring dimensions relate to I.D. x section

Quantity

supplied

Edwards and the Edwards logo are trademarks of Edwards Limited.

Parts in the clean and overhaul kit

A373-01-840 Issue J

Bag 3 89 Dowty seal 2BA 1

94 Gas ballast O-ring 13.6 x 2.4 (fluoroelastomer) 1

95 Gas ballast O-ring 15.6 x 2.4 (fluoroelastomer) 1

97 Inlet O-ring 35.5 x 3.0 (Nitrile) 1

Bag 4 21 Gas ballast valve 1

57 Valve pad 3

59 Exhaust spring 28.9 x 14 *(14) 1

61 Valve spring H.V. 30 x 9 *(10) 2

104 O-ring 7.9 x 2.6 (fluoroelastomer) 2

Bag 5 60 Distributor spring 14 x 10.3 *(5) 1

63 Distributor rubber 1

147 Waved washer 1

Table 2 - Clean and overhaul kit items- PFPE filled pumps (continued)

Bag Pack

Reference Item No.

Description

Size (mm) and feature (if applicable)

Length x diameter (x width)

* = inside diameter

(x)= number of coils in a spring

O-ring dimensions relate to I.D. x section

Quantity

supplied

A373-01-840 Issue J

Edwards and the Edwards logo are trademarks of Edwards Limited.

Parts in the clean and overhaul kit

Figure 1 - Kit items (HV and LV stators)

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