9.4.3 Installing the diaphragm
Required tools
● Diaphragm key
WAF 46
Spare parts required
● Overhaul kit incl. diaphragm key
Required consumables
● Clean, dry cloth
● Alcohol or cleaning solvent, if necessary
Installing the diaphragms
1. Clean all parts with a dry, clean cloth.
2. Replace the wearing parts (valves and diaphragms) as per the spare parts pack.
3. Place the diaphragm (blue side up) and the supporting washer on the square of the clamping
washer connecting screw.
– Pay attention to the seating of the diaphragm in the square of the connecting screw.
4. Place the original spacer disks on the respective connection rod.
5. Tighten the supporting washer with the diaphragm key on the connection rod.
9.4.4 Installing the pump head and valves
Avoid interchanging components
Always dismantle and mount only the pump head on one pump side in order to avoid inter-
changing the components.
The procedures are identical for both pump heads.
Prerequisite
● Diaphragms installed
Required tools
● Open-end wrench,
WAF 15
● Open-end wrench,
WAF 16
● Allen key,
WAF 4
● Calibrated torque wrench (tightening factor ≤ 1.6)
2
1
3
Fig. 13:
Correct mounting orientation of the valves in the head cover
1 Valve (inlet)
3
Head cover
2 Valve (outlet)
Procedure
1. Insert the valves into the head cover.
– Make sure that the valves have the correct mounting orientation.
2. Mount the housing cover.
3. First, screw on the cylinder screws of the housing cover loosely by hand, alternating screws in a
diagonal pattern.
4. Then tighten the cylinder screws of the housing cover, alternating screws in a diagonal pattern.
– Tightening torque:
max. 6.0 ±1 Nm
5. Mount the hose connection and the banjo bolts.
Maintenance
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