ProMinent DULCOflex DFDa Operating Instructions Manual page 40

Maintenance, repair, troubleshooting, disposal and spare parts
Exchanging the pump hoses - installa‐
tion
40
Fig. 13: Overview of bearing flange
1 Bearing flange
2 Flange sleeve
3 Pump hose
4 Pump housing
5 Clamping ring
6 O-ring external
7 O-ring internal
8 Flange screws (4 pieces)
1. Remove the front cover and clean the inner surface of the
pump housing
2. Check the shoes. Ensure that the sliding surfaces are not
damaged
ð If necessary, replace the shoes
3. Attach the front cover to the pump housing again
4. Attach the bearing flange to the discharge side with 2 screws.
In order to do so, fasten the screws diagonally
ð Release the screws after tightening by a 1/2 turn
5. Attach the pump hose over the suction side into the pump
housing
ð Switch the motor off when the pump hose has reached
the bearing flange on the discharge side.
6. Remove the bearing flange again and slide the clamping ring
flush over the pump hose
ð The pump hose projects 10 mm out of the pump housing.
7. Lay the inner O-ring in the bearing flange and slide the flange
sleeve into the bearing flange.
8. Position the outer o-ring in the bearing flange.