EN – 42
Draining
The pump must be drained when hot and after
the oil case has been vented to atmospheric
pressure. For this:
Switch off the pump.
Isolate the pump or disconnect it from the
installation.
Tilt the pump.
Unscrew the draining plug (
A
) on the side of
the oil case and the filling plug (
B
) on the top
of the oil case.
When all the oil has drained, replace the two
plugs temporarily and run the pump for about
10 seconds leaving the intake open. Take care
with the oil mist which may appear at the
exhaust. This operation removes the oil from
the functional block.
Drain this oil by removing the draining plug (
A
).
Replace the draining plug (
A
) and fill with fresh oil to the appropriate maximum level of
the oil sight glass (
C
) (
see page 20
) through the filling orifice (
B
).
The draining operation places the contaminated pumping circuit in
communication with the outside atmosphere. Take all necessary steps to
ensure personal safety: wear gloves, protective glasses.
Flushing
The draining operation can be followed by a flushing operation if the oil is particularly
dirty. This operation requires a volume of oil equal to the capacity of the pump.
After draining the oil case, replace the draining plug. Remove the intake filter, clean it
and replace it. Run the pump at atmospheric pressure, pour the flushing oil very slowly
through the inlet orifice. Take care with oil mist which may develop at the exhaust.
Stop the pump and drain the flushing oil via the draining plug. Replace the plug and fill
with fresh oil (
see page 17
).
B
C
A
2033/2063 m
3
/h SD and C1
pumps are tested in the factory with
A120
oil or
A119
for USA unless specified otherwise in the order.
2033/2063 m
3
/h C2
pumps are tested in the factory with
A113
oil unless specified
otherwise in the order.
When the pump is delivered, a certain quantity of oil remains in the functional block.
Thus, if you wish to use another type of oil, proceed as follows:
Change of oil type
Mineral oil can be replaced by another type of mineral oil. Simply flush the pump using
the new oil and fill the pump (
see page 17
).
Mineral oils are also compatible with mineral-based synthetic oils
(see page 17
).
Compatible oils
Maintenance (cont’d)
