1
2
3
4
5
6
7
8
9
12
10
11
Fig. 5:
Diaphragm head and valves
1 Interior hexagon socket screw (4×)
7
Diaphragm
2 Diaphragm head cover
8
Spacer disks
3 Seal on the suction side
9
Hose connection
4 Valve plate (2×)
10
Gas ballast valve
5 Sealing ring on the suction side
11
O-ring
6 Intermediate plate
12
Banjo bolt (2×)
Procedure
1. Unscrew the gas ballast valve from the banjo bolt.
– Be careful with the O-ring.
2. Remove the banjo bolts and dismantle the hose connection.
3. Rotate the diaphragm pump so that the diaphragm head to be dismantled is facing upwards.
4. Unscrew the interior hexagon socket screws from the diaphragm head cover.
5. Remove the diaphragm head.
– Observe the sealing rings and the seal on the suction side.
6. Remove the intermediate plate.
7. Release the valves and the sealing rings from the intermediate plate.
8. Lift the diaphragm slightly at the side.
9. Unscrew and remove the diaphragm from the connection rod by hand.
– The diaphragm has a right-hand thread.
– Pay attention to the spacer disks.
7.3.2 Cleaning and replacing the diaphragms and valves
Prerequisite
● Diaphragm and valves removed
Required spare parts
● Overhaul kit
Required consumables
● Clean, dry cloth
● Isopropanol
Procedure
1. Clean diaphragms and valves with a clean, dry cloth.
– Do not use isopropanol or other cleaning agents to clean diaphragms and valves.
2. Clean valve seats, intermediate plate and head cover with isopropanol.
3. Check valve seats, intermediate plate and head cover for wear.
4. Replace all wear parts according to the inspection sets.
Maintenance
25/40