Replace The Oil; Inspect And Clean The Inlet-Filter - Edwards RV3 Instruction Manual

6.4 Replace the oil

1. Refer 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 the electrical supply and disconnect it from the vacuum
system.
3. Remove one of the oil filler-plugs (6).
4. Place a suitable block under the pump-motor to tilt the pump and place a suitable
container under the drain-plug (9). Remove the drain-plug and allow the oil to
drain into the container.
5. If the oil drained from the pump is contaminated, pour clean oil into the filler-hole
and allow it to drain out of the pump. Repeat this step until the oil reservoir in the
pump has been thoroughly cleaned.
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 (8).
8. Allow a few minutes for the oil to drain into the pump. If necessary, add more oil.
Refit the filler-plug.

6.5 Inspect and clean the inlet-filter

1. Refer to
inlet-port (3) and remove the centring-ring and filter assembly (1) and the O-ring
(2). Inspect the centring-ring and the O-ring. If they are clean, continue at Step 5. If
they are not clean, continue at Step 2.
2. Remove the O-ring (2) from the centring-ring and filter assembly (1). Do not allow
the O-ring to come into contact with the cleaning solution.
3. Wash the centring-ring and filter assembly in a suitable cleaning solution and allow
it to dry.
4. If necessary, wipe the O-ring with a clean, dry, lint-free cloth.
5. Refit the centring-ring and filter assembly and the O-ring to the inlet-port. Refit the
vacuum system to the pump inlet-port.
A65201880_AA
A65201880_AA - Maintenance
Figure: The RV pump. Operate the pump for approximately ten minutes to
Figure:Inlet-filter assembly. Disconnect the vacuum system from the pump
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