Oerlikon 10926, Operating Instructions Manual

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31 GAET02307_002_10 - 06/2008 - © Œrlikon Leybold Vacuum
J. Replacing the Pump Module
Fully assembled pump modules are available under Ref. Nos. :
SV200 : 714 36 770
SV 300 : 714 36 780
Tools required : SV200/300 :
open-jaw or box wrenches 10 mm, 17 mm, 27 mm.
We recommend using a new module/oil casing flat gasket and new flat gas-
kets for the oil flow tubes and gas ballast valve.
Drain the oil.
Remove the pump-cylinder cover, oil lines, oil case and exhaust valve (see
point I).
Take off the intake flange, anti-suckback valve (see point G) and spring.
Remove the gas ballast valve (6/14).
Loosen the screws and pull the pump module (7/96).
Take off the coupling element (7/60). Loosen the screw and pull off the cou-
pling (7/59).
Remove the key (7/86).
Install the new or the repaired pump module in the reverse sequence.
Adjust the coupling on the motor shaft so that there is a gap between
the motor-side of the radial bladed fan and the inside wall of the coupling
housing. Then adjust the pump coupling so that there is a gap between the
coupling halves. The correct gaps are listed below :
■
Gap between Fan & coupling housing : 3 mm
■
Gap between coupling halves : 3 mm
Secure the coupling setscrews with Loctite.
Observe the safety regulations!
K. Disassembling and Reassembling the Pump Module
Remove the pump module (see point I).
Remove the screws with washers and take off the rear end plate (7/89) and
front end plate (7/80) with O-rings (7/81). Take out the centering pins.
Pull the rotor (7/88) with vanes (7/87) out of the pump module (7.83).
Pull the vanes out of the rotor.
Take the radial shaft seal (7/79) out of the front end plate.
Reassemble the pump module in the reverse sequence.
Make sure that the vanes are correctly positioned.
To reassemble the pump module, place the exhaust box on its side and put
the pump module on the exhaust box, with its exhaust downward.
Observe the safety regulations!
Maintenance