KNF Labor N035.18 Manual De Instrucciones página 79

Diaphragm pump N035.18
Translation of Original Operating Instruction, KNF 121228-121397 04/23
2. For pumps N 035.3 A_.18:
Open the union nut of the pneumatic connection on a
pump head and pull off the hose.
3. Mark the position of the diaphragm head (C) with respect
to the housing (A) with a pencil mark.
4. Loosen the 4 Allen screws (B) and remove the diaphragm
head (C).
5. Loosen the countersunk screw (D).
6. Remove the retainer plate (E) and the diaphragm (F).
7. Loosen the 4 cheese head screws (G) and remove the
cover (H).
8. Turn the flywheel (J) until connecting rod (K) is in the cen-
ter position.
9. Put on the new diaphragm (F).
10. Place the retainer plate (E) on the diaphragm (F) and
tighten it with the new countersunk screw (D) (tightening
torque: 5.0 Nm).
The self-locking countersunk screw (D) can only be used
once.
11. Change lower valve spring:
à
Loosen the cheese head screw (N) and replace the
valve spring (M).
à
Tighten the cheese head screw (N).
12. Change upper valve spring:
à
Loosen the Allen screws (S).
à
Lift off the cover (T) and the seal (V).
à
Loosen the cheese head screw (U) and replace the
valve spring (P).
à
Tighten the cheese head screw (U).
à
Put on the cover (T) with new seal (V).
à
Tighten the Allen screws (S).
13. Place the diaphragm head (C) in the installation position
marked with a pencil and tighten the Allen screws (B)
evenly crosswise (tightening torque: 10.0 Nm).
Servicing
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