1
Diaphragm head
4
Head cover
2
O-rings
5
Connection rod
3
Valves
Fig. 17:
Secure diaphragm head
Installing the diaphragm head
Tools required
● Allen key (5 WAF)
● Torque wrench
1. Move the connection rod by rotating the eccentric bushing (on the front of the connection rod) to a
position where the diaphragm rests centrally and flush on the supporting surface in the housing
opening.
2. Make sure that valves and O-rings are positioned correctly.
3. Assemble head cover and diaphragm head.
4. Place top of housing (diaphragm head and head cover) on pump housing.
– When doing so, the diaphragm must lie centrally for even clamping between the pump hous-
ing and head cover.
5. Use the Allen key to tighten the four cheesehead screws on the diaphragm head.
6. First, use the Allen key to lightly tighten the four cheesehead screws.
7. Then, use the torque wrench to firmly tighten the four cheesehead screws diagonally. (Do not
tighten up to the stop.)
– Tightening torque =
12 Nm
9.10 Installing the distributor
2
1
3
4
25
22
17
5
Fig. 18:
Install both distributors
Maintenance
28/40
