6.4 Replace the oil
1. Refer to Figure: The RV pump. Operate the pump for approximately ten minutes to
warm the oil, then switch o 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 ller-plugs (6).
4.
Place a suitable block under the pump-motor to lt 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 ller-hole
and allow it to drain out of the pump. Repeat this step unl the oil reservoir in the
pump has been thoroughly cleaned.
6.
Ret 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 ller hole unl 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.
Ret the ller-plug.
6.5 Inspect and clean the inlet-lter
1. Refer to Figure:Inlet-lter assembly. Disconnect the vacuum system from the pump
inlet-port (3) and remove the centring-ring and lter assembly (1) and the O-ring
(2). Inspect the centring-ring and the O-ring. If they are clean, connue at Step 5. If
they are not clean, connue at Step 2.
2. Remove the O-ring (2) from the centring-ring and lter assembly (1). Do not allow
the O-ring to come into contact with the cleaning soluon.
3.
Wash the centring-ring and lter assembly in a suitable cleaning soluon and allow
it to dry.
4. If necessary, wipe the O-ring with a clean, dry, lint-free cloth.
5. Ret the centring-ring and lter assembly and the O-ring to the inlet-port. Ret the
vacuum system to the pump inlet-port.
03/2021 - ©Edwards Limited
Page 42A65201880_AA
A65201880_AA - Maintenance
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