PSG Mouvex CC20 Installation, Operation And Maintanance Manual page 5

The pump must be scrapped in compliance with the regula-
tions in force.
Operation
Rotary seal 697 rotates with shaft 501 thanks to 2 tongues fit-
ting into 2 notches on shaft.
Stationary seal 604 is held in pump body by rind 605 and pin
627.
Sealing is therefore provided by :
1) ring of rotary seal 697 on shaft
2) faces of rotary seal 697 and stationary 604.
3) ring 605 between retainer 701 and stationary seal 604.
Tight sealing depends on rings and sealing faces being in
good condition.
Dismantling
Pump being opened :
- Remove key 508 and snap ring 537.
- Remove screws 706 and washers 721.
- Remove cap 705 and seal 707.
- Release shaft 501 by tapping with a hammer on shaft end.
- Remove snap ring 704, washer 731. Drive out retainer
701 bearing 703 - ring 733 by tapping on shaft end.
- Remove ring 605, stationary seal 604 and rotary seal 697.
NT 1010-C00 01.13 CC20 pump e
SCRAPPING
BLOCDIR SHAFT SEAL
5/6
During this operation, particular care must be paid to the drai-
nage stages of the pump.
Assembly
Check rings 605, 707 and 616 (of rotary seal).
Check that sealing faces of new 604 and new 697 are flat and
mirror smooth.
- Replace all parts on shaft in the reverse order.
- Make sure that the 2 tongues of rotary seal 697 fit into the
notches on shaft 501.
- Make sure that pin 627 fit into housing in stationary seal
604.
- Install snap ring 704.
- Replace gasket 717 and shaft with ball-bearing and seal
into casing. Make sure that one of the drain vents is tur-
ned downwards 761.
- Install cap 705 and seal 707, taking care to damage seal
707 on key-groove, then screws 706 washers 721, snap
ring 537 and key 508.