Edwards RV Series Manuale utente

A653-01-840

Issue F Original

Instruction Manual

RV Pump Cartridge Kits

Description Hydrocarbon Item Number PFPE Item Number

RV3 Pump Cartridge Kit A652-01-032 A652-09-032

RV5 Pump Cartridge Kit A653-01-032 A653-09-032

RV8 Pump Cartridge Kit A654-01-032 A654-09-032

RV12 Pump Cartridge Kit A655-01-032 A655-09-032

Important safety Information

zVacuum pumps are potentially dangerous if incorrectly used, repaired or maintained, so please approach the

repair or maintenance with caution.

zAny incorrectly fitted spare parts could damage your pump and could be potentially dangerous.

zNever allow unqualified personnel to attempt to remove or replace any part of the pump.

zIf you have any doubts about the servicing procedures or the products capabilities please contact Edwards.

zBefore returning any equipment to Edwards for repair please follow the Edwards HS1 procedure and

complete an HS2 declaration form to warn of any substances used or produced in the equipment that can be

dangerous. The procedure and forms are included with the pump instruction manuals and can be down-

loaded together with Edwards local contact details from www.edwardsvacuum.com

zAlways conform to service schedules unless adverse conditions necessitate more frequent servicing.

zReport any defect before an accident or consequential damage can occur.

zObserve local and country specific regulations, norms and guidelines.

zNever allow anyone to remove large or heavy components without adequate lifting equipment.

zBefore maintenance work is begun, ensure the pump is switched off and isolated from the mains.

zThe pump may have been exposed to processes which use hazardous substances or produces by-products

which are dangerous to human health and safety, for example, chemically active, biologically active or

radioactive substances.

zBefore working on a pump, ensure that the correct personal protective equipment is available and being

used. Always wear safety goggles. Wear a breather mask with positive air pressure and take other

precautions if you believe the pump may be contaminated with hazardous substances and dusts.

zWhen applying sealants and lubricants, prevent contact with the skin by wearing suitable gloves.

zSeals may contain fluoroelastomer, which when properly handled is not dangerous but which may produce a

toxic and corrosive residue (hydrogen fluoride or hydrofluoric acid) in the event of excessive heat or fire

depending on the circumstances of degradation and other materials involved.

zOn completion of maintenance, check the pump functions correctly and that all guards and protection

devices are fitted and working correctly and that the pump is electrically safe.

zIf the pump is used for handling hazardous substances check the pump for leak-tightness before use.

zDispose of waste oil and any process by-products in accordance with local and national safety and

environmental requirements. It is usually illegal to dispose of waste oil into drains or water courses, or to

bury it.

Edwards Limited

Manor Royal

Crawley, West Sussex, UK

RH10 9LW

Tel: +(44) 1293 528844

Fax: +(44) 1293 533453

Edwards and the Edwards

logo are trademarks of

Edwards Limited.

Edwards and the Edwards logo are trademarks of Edwards Limited.

Contents

A653-01-840 Issue F

Contents

Section Page

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

1.1 Scope of this manual .................................................................................................... 1

1.2 Safety ......................................................................................................................1

2 Unpack and inspect ...............................................................................3

3 How to use the cartridge kit ....................................................................5

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

Illustrations

Figure Page

1 Exploded view of the RV pump ........................................................................................ 6

2 Exploded view of the cartridge ........................................................................................ 7

3 Exploded view of inlet-valve assembly ............................................................................... 8

Tables

Table Page

1 Checklist of cartridge kit components ................................................................................ 3

dcs/8784/10/10

This page has been intentionally left blank.

A653-01-840 Issue F

Edwards and the Edwards logo are trademarks of Edwards Limited.

Introduction

A653-01-840 Issue F

1Introduction

1.1 Scope of this manual

This manual provides installation instructions for the cartridge kits for the Edwards RV rotary pumps. You must use

the cartridge kits as specified in this manual.

Use a cartridge kit to replace the cartridge, springs, seals and fluoroelastomer components in an RV rotary pump. We

recommend that you use all of the components in the cartridge kit when you service the pump.

The contents of the kit are defined in Section 2. Section 3 describes how to install the kit components in the pump.

1.2 Safety

The dynamic seals and O-rings used in this pump are made from fluorinated materials. Fluorinated materials are safe

in normal use but can decompose into very dangerous materials (which may include hydrofluoric acid) if they are

heated to 210 °C and above.

The pump may have overheated if it was misused or if it was in a fire. If the pump has overheated, take extreme care

to avoid skin contact with any part of the pump and to avoid inhalation of vapours from the pump. Health and Safety

Data sheets for fluorinated materials used in the pump are available on request: contact your supplier or Edwards.

WARNING

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

present if the pump has been heated to 210 °C and above. These breakdown products are very

dangerous. Some of the seals in the pump are made from fluorinated materials.

A653-01-840 Issue F

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.

Unpack and inspect

A653-01-840 Issue F

2 Unpack and inspect

Remove all the packing materials and protective covers and check the components of the kit.

If any component is damaged, notify your supplier and the carrier in writing within three days; state the Item Number

of the kit together with your order number and the supplier’s invoice number. Retain the packing materials for

inspection. Do not use the kit if it is damaged.

Check that your kit contains the components listed in Table 1. Note that, except for the cartridge, the kit

components are packed in three separate bags, labelled bag 1, 2 and 3; the contents of the bags are shown in Table 1.

If any component is missing, notify your supplier in writing within three days.

If the kit is not to be used immediately, replace the protective covers and repack the components of the kit in the

packing materials. Store the kit in cool, dry conditions until it is required for use.

Table 1 - Checklist of cartridge kit components

Bag label Qty Description Figure 1-3

reference Check (9)

- 1 Cartridge A 

1 Gas ballast check-valve 210 

2 Spring (valve and gas ballast check-valve) 211 

1 Printed gasket (cartridge) 215 

Bag 1 1 Dump valve 217 

1Oilpressurevalve 209 

1 O-ring: 57.6 x 2.4, viton (cartridge/adaptor) 127 

1 Coupling element 411 

1 Inlet-valve ‘U’ seal 202-5 

1 O-ring: 49.5 x 3.0, nitrile (inlet-valve) 202-6 

Bag 2 1 O-ring: 7.6 x 2.4, viton (inlet-valve) 202-7 

1 O-ring: 32.5 x 3.0, nitrile (inlet-valve) 202-8 

1 Spring (inlet-valve) 213 

1 Printed gasket (top-plate) 216 

1 O-ring: 42.5 x 3.0, nitrile (inlet connection)*

*If required.

005 

1 O-ring: 14.6 x 2.4, nitrile (gas ballast control) 203-3 

1 O-ring: 21.5 x 3.0, nitrile (gas ballast control) 203-4 

1 O-ring: 9.6 x 2.4, viton (mode selector) 204-3 

1 Spring (gas ballast control) 212 

Bag 3 3 O-rings: 21.5 x 3.0, nitrile

(gas ballast insert*and mode selector) 220 

1Shoulderwasher 222 

1 Exhaust diaphragm 301-3 

1 Printed gasket (oil-box) 314 

3 O-rings: 28.2 x 3.53, nitrile

(oil filler-plugs and exhaust-flange) 319 

1 O-ring: 69.5 x 3.0, nitrile (sight-glass) 321 

1 O-ring: 15.6 x 2.4, nitrile (oil drain-plug) 323 

A653-01-840 Issue F

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.

How to use the cartridge kit

A653-01-840 Issue F

3 How to use the cartridge kit

Refer to Figure 1 to 3which show exploded views of the RV pump and use the following procedure to install the

components of the kit. Where necessary, refer to the RV pump instruction manual.

1. Switch off the RV pump, disconnect it from the electrical supply and allow the pump to cool.

2. Drain the oil from the pump. Undo and remove the bolts (327) which secure the oil-box (305) and remove the

oil-box from the pump. Remove any debris from the inside of the oil-box, then clean all surfaces of the oil-box

with a suitable cleaning solution.

3. Dismantle the pump; note that you do not need to dismantle the cartridge. Use a suitable cleaning solution to

clean all the surfaces of the components that you will reuse.

4. If the pump has a detachable stainless steel inlet-flange (instead of the integral top-plate (208)), remove the

inlet-flange and replace the O-ring (005) with the O-ring supplied.

5. If the end-plate (107) on the old cartridge has a vent-valve:

zRemove the end-plate from the old cartridge

zFit the old end-plate (107) to the new cartridge.

6. Use the components supplied in the cartridge kit to replace the corresponding components in the pump. Ensure

that the components are clean before you fit them. Before you fit fluoroelastomer components, wipe them with

a clean lint-free cloth and lightly lubricate them with the oil you use in your pump.

7. Remove and inspect the restrictor (226). If necessary, use a suitable cleaning solution to clean the restrictor

orifice.

8. Remove and inspect the filter (if fitted) from the air bleed assembly (201). If necessary, use a suitable cleaning

solution to clean the orifice and the filter.

9. Reassemble the pump. When you refit the side panels (408, 412), ensure that you do not over-tighten the

securing screws. If the side panels are damaged, you must replace them before you operate the pump.

10.Use the oil-box printed gasket (314) supplied in the kit and refit the oil-box (305) to the pump. Fill the pump

with the correct quantity of new oil.

11.Fit an oil mist filter to the pump-outlet and connect the outlet of the oil mist filter to a suitable

exhaust-extraction system.

12.Connect the pump to the electrical supply, then look at the oil-level in the sight-glass and switch on the pump;

check that the oil-level drops by 3 to 5 mm when you switch on the pump. If the oil-level does not drop, refer to

the pump instruction manual.

13.Refer to the RV pump instruction manual for normal operation of the pump.

14.Dispose of the old components and used oil safely in accordance with all local and national safety and

environmental requirements.

A653-01-840 Issue F

Edwards and the Edwards logo are trademarks of Edwards Limited.

How to use the cartridge kit

Figure 1 - Exploded view of the RV pump

* Included in the Cartridge Kit: see Table 1

Included for reference only: see key

A Oil pressure/damp valve assembly

B Cartridge: see Figure 2

F Gas Ballast check valve assembly

201 Air bleed assembly

202 Inlet-valve assembly: see Figure 3

208 Top-plate

226 Restrictor

310 Oil-box

327 Bolt

408 Side panel

412 Side panel

421 Bolt

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