More frequent maintenance may be required if the pump is used to pump corrosive or
abrasive gases and vapours, such as solvents, organic substances and acids; in these
circumstances, we recommend replacing the pump seals every year (refer to
page 51 for details of available spares). If necessary, adjust the maintenance plan
according to prior experience.
When maintaining the RV pump, use our spares and maintenance kits; these contain all
of the components necessary to complete maintenance operations successfully. The
Item Numbers of the spares and kits are given in
on page 51.
Table 16
Maintenance plan
Operation
Frequency
Refer to Section
Check the oil-level
Monthly
on page 41
Replace the oil
Every 3000 hours of
operation
on page 42
Inspect and clean the inlet-fil-
ter
Yearly
Inspect and clean the inlet-filter
on page 42
Inspect and clean the gas-bal-
last control
Yearly
Inspect and clean the gas-ballast control
on
page 43
Clean the oil-level sight-glass
Yearly
Clean the oil-level sight-glass
on page 44
Clean the motor fan-cover and
enclosure
Yearly
Clean the motor fan-cover and enclosure
page 45
Clean and overhaul the pump Every 15000 hours of
operation
on page 45
Fit new blades
Every 30000 hours of
operation
on page 45
Test the motor condition
Every 15000 hours of
operation
on page 46
6.3 Check the oil-level
Note:
If required, the oil-level can be checked while the pump is operating. The pump must be
switched off and the pump and other components in the pumping system isolated from
the electrical supply before pouring oil into the pump.
Refer to
for the items in brackets.
1.
Check that the oil-level in the sight-glass (8) is between the MAX and MIN level
marks on the bezel of the sight-glass.
2.
If the oil-level is near to or below the MIN level mark, remove one of the filler-
plugs (6) and pour more oil into the reservoir until the oil reaches the MAX level
mark. If the oil-level goes above the MAX mark, remove the drain-plug (9) and
drain the excess oil from the pump. Refit the filler-plug.
3.
If the oil is contaminated, drain and refill the pump with clean oil as described in
on page 42.
03/2021 - ©Edwards Limited
Page 41
A65201880_AA
A65201880_AA - Maintenance