Diaphragm Pump N 035 E
Servicing
KNF N 035 E e 08/09 Translation of the original Operating and installation instructions
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6. Loosen the four screws G and remove the cover plate H.
7. Turn the counterweight J so that the connection rod K is in the
mid-position; fit the new diaphragm F.
8. For all pumps except .9 versions: Place the retainer plate E on
the diaphragm F and tighten the new countersunk screw D
(torque: 5.0 Nm).
The self-locking screw D can only be used once.
9. For pumps N 035_ _.9 E: Place the retainer plate E on the
diaphragm F. Screw on the retainer plate E with the wrench for
retainer plate uniformly and diagonally (torque: 5.0 Nm).
10. Change lower reed valve:
−
Undo the cheese head screw N and exchange the reed
valve M.
11. Change upper reed valve:
−
Loosen the allen screws S, remove the cover plate T and
the gasket V.
−
Undo the cheese head screw U and exchange the reed
valve P; tighten the cheese head screw U.
−
Replace the cover plate T with a new gasket V and tighten
the allen screws S.
12. Place the diaphragm head C on the diaphragm F according to
the marks made previously and tighten the screws B uniformly
and diagonally (torque: 10.0 Nm).
13. Turn the counterweight J to check that the pump run freely,
replace the cover plate H and secure it with the four screws G.
14. For two-headed pumps:
Carry out steps 2 to 13 for the second pump head.
15. For two-headed pumps:
Reattach the tube of pneumatic head connection onto the hose
connector and tighten the union nut.
