Oerlikon RUVAC WA, Installation And Operating Instructions Manual

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Maintenance
59 GA03107_002_A4 - 09/2015 - © Oerlikon Leybold Vacuum
5.8.1 Preparations
Unscrew sealing screw with the gasket, drain the oil out from the shaft seal
housing and screw the sealing screw back in using a gasket which is in
perfect condition.
Support the motor so that it can not drop.
Unscrew the nuts and remove the motor with the coupling piece.
Remove protection tube. Remove the coupling element.
Unscrew screw with the disc and pull off coupling piece using the puller.
Remove key.
Unscrew screws.
5.8.2 RUVAC WA/WAU 251, 501
(see figs. 5.2 and 5.3).
Pull the shaft seal housing out. Forcing threads are provided on the shaft
seal housing for this purpose.
Take the O-ring out of the flange of the coupling.
Use a puller to pull the bushing off from the shaft.
Take the O-ring from the shaft.
Take the O-ring from the housing. Remove securing ring.
Pull out the shaft seal.
Take out snap ring and felt ring.
Take out shaft seal. Remove securing ring.
It is strongly recommended always to exchange the shaft seals, the bush-
ing and the felt ring against new parts. Clean all other parts and replace
them as required.
Fit securing ring.
Use shaft seal driver to drive the shaft seal down to the securing ring.
Fit felt ring and snap ring.
Use shaft seal driver to drive the shaft seal down. Here the depth must be
defined by the tool.
Fit securing ring.
Now reassemble the parts in the reverse order as for disassembly.
Before starting the pump, fill in the required amount of oil at the oiler (see
Section 3.1.1).