28
OIC 12en Edition 08/2016
Operating Instructions
Cleaning the pump
Servicing
1. Remove the pump from the pipe system, see "Removing the pump", page 18.
2. Dismantle the suction cover
090
and socket screws
914.2
of the union flange
112
3. Support the idle screws with the screw support
B
and dismantle the pump housing with a suitable
extractor
A
, see Fig. 3, page 27. Ensure that the idle screws do not fall down.
4. Clean the screws and pump housing.
5. A PTFE grease film has to be visible between the balancing cylinder
042
and flange cover
074.2
,
see Fig. 4, page 27. Before carrying out assembly check the presence of this grease film and, if
necessary, re-lubricate the screw plug/grease nipple, see "Lubricating the radial shaft seal",
page 30, sealing chamber A.
6. Position the idle screws at the main screw in such a way that the bearing bushes are flush with the
flange cover.
Slide on the pump housings, see Tab. 3, page 27.
7. Tighten the socket screws
914.2
of the union flange with reduced torque, see Tab. 3, page 27.
8. Check the flat gasket
222.3
for damage and replace if necessary.
9. Mount the suction cover. Ensure that the thrust washers in the suction cover are flush with the suc-
tion covers of the idle screws.
10. Connect the pump to the pipe system, fill and vent, see "Filling and venting the pump", page 22.
CAUTION
Loss of hardening through excessive heating.
► Don't heat up pump materials over 350 °C during cleaning process.
► Preferably clean screws and pump housings with solvents or water jet.
CAUTION
Damage of union flange and pump housing through excessive surface pressure
► Tighten the socket screws of the union flange with
reduced
CAUTION
Damaging of the screw set because of falling down.
► While dismantling the screw set hold it so that the loose idle screws cannot fall down.