Diaphragm pump N922 EX
Servicing
Translation of Original Operation and Installation Instruction, english, KNF 313600 11/19
37
9.4 Changing the adjusting valve (.29 version)
Tool
Quantity
Tool/material
1
Wrench, WAF 22 mm
Tab. 37
The item numbers within the following work instruction refer to Fig.
10.
4. Use a wrench to unscrew the adjusting valve (11) out of the head
counterclockwise.
5. Screw the new adjusting valve (11) into the head and tighten (tighten-
ing torque: 450 Ncm).
Fig. 11 Adjusting valve
The adjusting valve (11) is preset ex works to a defined value. No
changes may therefore be made to the adjusting valve before it is
mounted on the head.
Should deviations or discrepancies nevertheless occur, the follow-
ing is to be observed according to Fig. 11:
1. Threaded part (Y) and adjustment screw (X) must be flush for
mounting.
2. The valve diaphragm (Z) must be fully screwed in but must not
be overtightened.
3. Adjust the flow rate according to
