3
4
6
1
2
5
7
8
9
Fig. 9:
Diaphragm head and valves
1 Crosshead screw (4×)
6
Diaphragm
2 Diaphragm head cover
7
Spacer disks
3 Sealing ring on the suction side
8
Banjo bolts
4 Valve plate (2×)
9
Hose connection
5 Intermediate plate
Procedure
1. Remove the banjo bolts and dismantle the hose connection.
2. Rotate the diaphragm pump so that the diaphragm head to be dismantled is facing upwards.
3. Unscrew cylinder screws from the diaphragm head.
4. Remove the diaphragm head.
– Observe the sealing ring on the intake side.
5. Remove the intermediate plate.
6. Release the valves and the sealing ring from the intermediate plate.
7. Lift the diaphragm slightly at the side.
8. Unscrew and remove the diaphragm from the connection rod by hand.
– The diaphragm has a right-hand thread.
– Pay attention to the spacer disks.
9.3.2 Replace the diaphragms and valves
Prerequisite
● Diaphragm and valves dismantled
Spare parts required
● Overhaul kit
Required consumables
● Clean, dry cloth
Procedure
1. Clean all parts with a dry, clean cloth.
2. Replace all wear parts according to the inspection sets.
9.3.3 Mount the diaphragm head and valves
Required tools
● Open-end wrench,
WAF 14
● Crosshead screwdriver
Maintenance
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