Maintenance
66 GA02411_002_C0 - 10/2016 - © Leybold
5.1 Checking the Oil Level
The intervals between the regular checks should be based on the ambient
conditions and your experience.
Upon switching the pump on and off, the oil level may fluctuate visibly.
With the pump at standstill the oil level must be between the maximum and
the minimum mark (see fig. 4.1). As soon as the oil level during operation of
the pump drops to the minimum mark, oil must be topped up.
When determining the correct oil level at the oil sight glass, the oil level itself
is decisive and not the upper edge of the float!
5.1.1 Oil Change and Oil Filter Change
While it is still warm, the oil can cause burns. Use the ne cessary protection
equipment.
Change the oil while it is still warm and only while the pump is at standstill.
Place a sufficiently large collecting vessel (about 20 litres) under the pump.
When disposing of the waste oil observe the applicable environment pro-
tection regulations.
Use only lubricants approved by Leybold.
To change the oil, the cover section on the discharge side needs to be disas-
sembled, see fig. 4.2 or 4.3.
Unscrew the oil drain plug and the oil fill plug and drain out the oil. See fig.
4.1.
Clean the sealing surface and firmly screw in the oil drain plug using a gasket
which is in perfect condition. Wipe off any oil residues on the housing.
Replacing the Oil Filter
Open the fan’s housing and screw the oil filter housing open, see fig. 5.1
(place a collecting vessel for the small amount of oil underneath).
Remove the filter and replace it by a new one. Thereafter close the filter
housing and the fan’s housing once more.
CAUTION
NOTICE
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