Operation and Maintenance
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GA01297_002_A1 - 11/2014 - © Oerlikon Leybold Vacuum
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Operation and Maintenance
By connecting the ARS, the pump‘s oil consumption becomes negligible.
This does not affect the service life of the oil. It thus remains necessary to
check the condition of the oil and change it.
PFPE does not have to be changed under normal operating conditions.
Since the ARS has a lower operating temperature than that of the pump,
condensate may gather in the ARS when pumping vapours.
Feedback of condensate (e.g. water) into the pump causes a deterioration in
the oil quality.
Please consult us in cases of doubt.
Whenever changing the pump‘s oil, change the oil in the ARS as well.
To do so, remove the oil drain plug (3/2) after the pump has been shut down
and drain the used oil into a suitable container.
Reinsert the oil-drain plug (check the gasket and replace it, if necessary).
Also fill the remaining amount of fresh oil specified in the Technical Data into
the pump at (3/10).
4.1 Replacing the Filter Elements
The filter element(s) (3/5) has/have to be replaced from time to time, depend-
ing on their conditions of use and the pump’s operating mode.
The dirtier the operating conditions and the hotter the pump gets, the more
often they have to be replaced.
The filter elements have to be replaced when the differential pressure indica-
tor (3/8) moves from green to red.
Under normal operating conditions, the filter becomes clogged by cracking
products of the oil (not PFPE). A clogged oil filter is thus a sign of a deteriora-
tion of oil quality. Whenever replacing the filter elements, the oil and any
chemical filters should also be changed.
(Description below for ARS 40-65; ARS 16-25 similar, but only one filter ele-
ment).
Tools needed
Allen key 6 mm, 8 mm open jaw or ring wrench 10 mm
Shut down the pump.
