KNF Labor N022.18 Manual De Instrucciones página 103

Diaphragm pump N022.18, N026.18
Translation of Original Operating Instruction, KNF 121224-121388 04/23
WARNING
Work steps
The following item numbers refer to Fig. 7.
1. Only for two-headed pumps:
Open the pneumatic connection between the two heads;
loosen one of the union nuts to do this; be careful not to
kink the connecting hose.
2. Removing the housing cover (H):
Loosen the fastening screws (G) of the housing cover (H)
and remove the housing cover.
3. On a pump head, mark housing (A), intermediate plate (D)
and head plate (C) with a continuous line made with a
pencil. This helps to avoid incorrect assembly later.
4. Loosen the four hexagon socket head cap screws (Y) and
remove the head plate (C) and the intermediate plate (D)
from the housing.
5. Remove the O-rings (B) from the head plate (C).
6. Loosen the valve fastening screws (W) in the head plate
and the intermediate plate and remove the valve springs
(M).
7. For all pumps except .9 version:
Loosen the countersunk screw (L) and remove the re-
tainer plate (E) and the diaphragm (F).
Health hazard due to dangerous sub-
stances in the pump
Depending on the medium being trans-
ferred, caustic burns or poisoning is
possible.
à
Wear protective equipment if nec-
essary, e.g., protective gloves,
goggles.
à
Clean the pump with suitable mea-
sures.
Servicing
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EN
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