Edwards A505-23-825 User manual

A505-23-880
Issue D Original
Instruction Manual
EMF Adjustable Gas Ballast Oil Drain Kit for RV3 to RV12 Pumps
Description Item Number
EMF adjustable Gas Ballast Oil Drain Kit for RV3 to RV12 Pumps A505-23-000

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Contents
A505-23-880 Issue D
Contents
Section Page
1 Introduction ....................................................................................... 1
1.1 Scope and definitions ................................................................................................... 1
1.2 Description ................................................................................................................ 1
2 Installation ......................................................................................... 3
2.1 Unpack and Inspect ...................................................................................................... 3
2.2 Fit the Oil Drain Kit ...................................................................................................... 3
2.3 Select the gas ballast flow rate (optional) ........................................................................... 5
3 Maintenance ....................................................................................... 9
4 Storage and disposal ........................................................................... 11
4.1 Storage ...................................................................................................................11
4.2 Disposal ................................................................................................................... 11
5 Service and spares .............................................................................. 13
5.1 Introduction .............................................................................................................13
5.2 Service .................................................................................................................... 13
5.3 Spares ..................................................................................................................... 13
For return of equipment, complete the HS Forms at the end of this manual.
Illustrations
Figure Page
1 Side view (pump inlet-flange omitted for clarity ................................................................... 4
2 Adjust the gas ballast flow rate ....................................................................................... 6
3 Parts sectional view of the oil return assembly ..................................................................... 7
IA/053/06/09

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A505-23-880 Issue D
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Edwards and the Edwards logo are trademarks of Edwards Limited.

© Edwards Limited 2008. All rights reserved. Page 1
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
A505-23-880 Issue D
1Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards EMF Gas Ballast Oil Drain
Kit for RV3to RV12 Pumps. You must use the Oil Drain Kit as specified in this manual. Read this manual before you
install and operate the Oil Drain Kit.
1.2 Description
Note: In normal operation, oil will not be visible in the sight-glasses of the oil mist filter.
The Oil Drain Kit is designed for use with an RV3, RV5, RV8 or RV12 pump (fitted with an EMF oil mist filter) which
operates continuously with gas ballast switched on. You cannot use the Oil Drain Kit if you want to introduce a purge
gas into the RV pump. If you want to introduce a purge gas into the RV pump, you must fit a Gas Ballast Adaptor to
the pump (refer to the RV pump instruction manual) and oil cannot be returned from the pump.
When fitted, the Oil Drain Kit continususly returns oil trapped in the oil mist filter to the pump. This reduces oil loss
from the pump and minimises the need to check the pump oil-level and to refill the pump with oil.
At high inlet pressures (above 200 mbar, 2 x 104Pa), the Oil Drain Kit will not work correctly. If you want to return
oil to the pump when the pump is operated at high inlet pressures, contact your supplier or Edwards for advice.
The Oil Drain Kit is not suitable for use with an RV pump which is used in hazardous processes.

A505-23-880 Issue D
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Installation
A505-23-880 Issue D
2 Installation
2.1 Unpack and Inspect
Remove all packaging materials and protective covers and check the Oil Drain Kit. If the Oil Drain Kit is damaged,
notify your supplier and the carrier in writing within three days. You must state the Item Number of the Oil Drain Kit
together with your order number and your supplier’s invoice number. Return all packaging materials for inspection.
Do not use the Oil Drain Kit if it is damaged.
Check that your package contains the items listed in Table 1. If any tiem is missing, notify your supplier in writing
within three days.
If the Oil Drain Kit is not used immediately, replace the protective covers. Store the Oil Drain Kit in suitable
conditions, as described in Section 4.1.
2.2 Fit the Oil Drain Kit
Where necessary, refer to the instruction manuals supplied with your pump and oil mist filter when you fit the Oil
Drain Kit.
1. Switch off the pump and allow it to cool to a safe temperature. Isolate the pump from the electrical supply, so
that it cannot be operated accidentally.
2. Remove the drain-plug from the oil mist filter and drain the oil from the oil mist filter. Retain the drain-plug for
future use.
3. Refer to Figure 1. Fit the drain adaptor (8) to the oil mist filter (1).
4. Turn the gas ballast control on the pump to the high flow position (position II). Push the control down (against
the spring), turn the control anticlockwise to release it and remove the control from the pump. Leave the spring
in position in the gas ballast inlet.
5. Refer to Figure 3. Fit the two ‘O’ rings (6, 7) to the oil return assembly.
6. Refer to Figure 1. If you have an RV3 or RV5 pump, lift the handle. Fit the oil return assembly (5) to the gas
ballast inlet on the pump, push the assembly down (against the spring) and turn the adaptor clockwise to secure
it on the pump. When the oil return assembly is correctly secured to the pump, the nozzle (4) should be over the
gas ballast ‘0’ position marked on the top of the pump:see detail B.
Table 1 - Checklist of components
Qty Description Check (3)
1 Oil return assembley
1 Drain adaptor
1 Restrictor
1 Flexible oil-return tube
2Hoseclips
1 ‘O’ ring: Ø14.6 x 2.4
1 ‘O’ ring: Ø21.5 x 3.0

A505-23-880 Issue D
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Installation
Figure 1 - Side view (pump inlet-flange omitted for clarity
1. EMF Oil mist filter
2. Hose clip
3. Flexible oil return tube
4. Nozzle
5. Oil return assembly
6. RV pump
7. Restrictor
8. Drain adaptor

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Installation
A505-23-880 Issue D
7. Cut a suitable length from the flexible oil-return tube. The routing of the tube (3) must be approximately as
shown in Figure 1. When fitted, the tube must not be taut and there must be no tight bends in the tube. Ensure
that the ends of the oil-return tube are free of burrs and that they are squarely cut(that is, the cut faces are at
a right-angle to the length of the tube).
8. Fit the restrictor (7) into one end of the tube as shown in Figure 1, then fit the end of the tube (3) to the drain
adaptor (8) on the oil mist filter.
9. Fit the other end of the tube to the nozzle (4) on the oil return assembly (5).
10. Use the hose clips (2) to secure the ends of the flexible oil return tube (3).
11. Reconnect the pump to the electrical supply.
2.3 Select the gas ballast flow rate (optional)
Note: If re quired, use the pro cedure be low to change the gas bal last flow rate af ter you have used the Oil
Drain Kit; you must switch off the pump, al low it to cool and iso late it from the elec trical sup ply be fore
you use the fol lowing pro cedure.
The Oil Drain Kit is supplied configured so that the gas ballast flow rate is equivalent to that with the gas ballast
control on the pump in position ‘II’. If required, you can adjust the gas ballast flow rate; use the following procedure:
1. Refer to Figure 2. Undo and remove the three screws (1) which secure the restrictor plate (5); do not dismantle
the assembly.
2. The restrictor plate (5) has circular indentations (2 and 3); the position of these indentations with respect to the
indentation (4) on the oil return assembly identifies the gas ballast flow setting. Turn the restrictor plate to the
required position:
To select no gas ballast flow (equivalent to the gas ballast control on the pump in position ‘0’), turn the
restrictor plate so that none of the indentations (2 and 3) are aligned with the indentation (4) on the oil
return assembly.
To select low gas ballast flow (equivalent to the gas ballast control on the pump in position ‘I’), turn the
restrictor plate so that the single indentation (2) is aligned with the indentation (4) on the oil return
assembly.

A505-23-880 Issue D
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Installation
Figure 2 - Adjust the gas ballast flow rate
To select high gas ballast flow (equivalent to the gas ballast control on the pump in position ‘II’), turn the
restrictor plate so that the two indentations (3) are aligned with the indentation (4) on the oil return
assembly.
3. Refit and tighten the three screws (1)
1. Screws (3 off)
2. Indentation (low gas ballast flow position)
3. Indentations (high gas ballast flow position
4. Indentation
5. Restrictor plate

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Installation
A505-23-880 Issue D
Figure 3 - Parts sectional view of the oil return assembly
1. Screw
2. Air inlet
3. Restrictor plate
4. Expansion chamber
5. Silencer tube
6. ‘O’ ring: 21.5 x 3.0
7. ‘O’ ring: 14.6x 2.4

A505-23-880 Issue D
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Maintenance
A505-23-880 Issue D
3Maintenance
Regularly inspect the Oil Drain Kit and do the following checks:
Check that the oil return assembly is securely fitted to the pump.
Check that the oil return tube is securely fitted to the oil return assembly and to the oil mist filter.
Check that there are no blockages in the Oil Drain Kit.
Check that the Oil Drain Kit operates correctly.
Refer to Figure 3. If one or both of the air inlets (2) on the restrictor plate (3) of the oil return assembly are blocked:
1. Switch off the pump and allow it to cool to a safe temperature. Isolate the pump from the electrical supply, so
that it cannot be operated accidentally.
2. Undo and remove the three screws (1) which secure the restrictor plate (3) and remove the plate from the oil
return assembly.
3. Use a suitable tool to remove the blockage from the air inlet (2).
4. Refit the restrictor plate (3) to the oil return assembly and secure with the three screws (1), then reconnect the
pump to the electrical supply.
Refer to Figure 1. If the restrictor (7) is blocked:
1. Switch off the pump and allow it to cool to a safe temperature. Isolate the pump from the electrical supply, so
that it cannot be operated accidentally.
2. Undo and remove the hose clip (2) on the oil mist filter end of the oil return tube (3), then remove the end of
the oil return tube from the drain adaptor (8) on the oil mist filter (1).
3. Remove the restrictor (7) from the oil return tube and remove the blockage from the restrictor.
4. Refit the restrictor (7) in the end of the oil return tube (3), fit the end of the oil return tube to the drain adaptor
(8) on the oil mist filter, then use the hose clip (2) to secure the end of the oil return tube.
5. Reconnect the pump to the electrical supply.

A505-23-880 Issue D
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Storage and disposal
A505-23-880 Issue D
4 Storage and disposal
4.1 Storage
Store the Oil Drain Kit in cool, dry conditions until required for use.
When required, install the Oil Drain Kit as described in Section 2.
4.2 Disposal
Dispose of pump oil, the Oil Drain Kit and any components removed from it safely in accordance with all local and
national safety and environmental requirements.

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Service and spares
A505-23-880 Issue D
5 Service and spares
5.1 Introduction
Edwards products, spares and accessories are available from Edwards companies in Belgium, Brazil, Canada, France,
Germany, Hong Kong, Italy, Japan, Korea, Switzerland, 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.
5.2 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.
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.
5.3 Spares
The Service Kit contains all items that you may need to replace on the Oil Drain Kit. Replace items as necessary when
you do the annual overhaul of the RV pump.
Spare Item Number
Service Kit A505-23-825

A505-23-880 Issue D
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