KNF N1200.12, Original Operating And Installation Instructions

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Servicing Diaphragm Pump N1200.12, N1400.1.2.12
30 Translation of Original operating and installation instruction, English, KNF 308930-308933 02/22
Information on the procedure
WARNING
Risk of dangerous gas mixtures and leakage of
the medium being transferred from the pump dur-
ing pump operation if the safety diaphragm is not
changed at the same time as the working di-
aphragm.
à
If the working diaphragm is changed, always
change the safety diaphragm at the same
time.
WARNING
Health hazard due to dangerous substances in the
pump
Depending on the medium being transferred,
caustic burns or poisoning is possible.
à
Wear protective equipment if necessary, e.g.,
protective gloves, goggles.
à
Clean the pump with suitable measures.
CAUTION
Risk of burns from hot pump parts
The pump head or motor may still be hot after op-
eration of the pump.
à
Allow the pump to cool after operation.
For two-headed pumps:
Servicing work should generally be performed on both heads at the
same time.
à
Always change the working diaphragm and safety diaphragm together
so as to maintain the flow rate and safety of the pump.
With multi-headed pumps, parts may be interchanged between the individ-
ual pump heads.
à
Change parts of the individual pump heads that are to be exchanged
one after the next.
Spare parts
Spare part* Position designation** Quantity
Working diaphragm (10) 1 (per pump head)
Safety diaphragm (13) 1 (per pump head)
O-ring (7) 2 (per pump head)
O-ring (11) and (14) 2 (per pump head)
O-ring (8) and (20) 2 (per pump head)
O-ring (25) 2 (per pump head)
Reed valve (5) 2 (per pump head)
Valve limiter (3) 2 (per pump head)
Tab.16 * According to spare parts list, Chapter 10.1 Spare parts
** According to
Fig. 11