Diaphragm pump PJ25481-950.50.18
Servicing
Translation of original Installation Instructions, english, KNF 125530-316634 06/18
25
Fig. 8: Exploded drawing of pump heads 1 and 2
Replacing the diaphragms and valve plates
1. Manually remove the four diaphragms (Fig. 9/
7
) by turning
them in the counterclockwise direction.
Use caution to prevent the diaphragm spacers (
21
) located be-
tween the diaphragm and the connecting rod from falling into
the pump housing. The diaphragm and the connecting rod from
falling into the housing. The diaphragm spacers (
21
) must be
installed in the same quantity as before in order to ensure the
pump’s pneumatic performance.
Fig. 9: Replacing diaphragm
