Servicing Diaphragm pump N96
26 Translation of Original Operating and Installation Instruction, English, KNF 316836-316838 01/20
9.2 Cleaning
9.2.1 Flushing the pump
When transferring dangerous and environmentally hazardous media, KNF
recommends flushing the pump at atmospheric pressure for a few minutes
prior to switch-off (if necessary for safety reasons: with an inert gas) to ex-
tend the service life of the diaphragm.
à
Discharge the media safely.
9.2.2 Cleaning the pump
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.
WARNING
Health hazard due to dangerous substances in the
pump
Depending on the medium being transferred,
caustic burns or poisoning is possible.
àWear protective equipment if necessary, e.g.,
protective gloves, goggles.
àClean the pump with suitable measures.
During cleaning work, ensure that no fluids enter the interior of the
housing.
à
Solvents should only be used during cleaning if head materials are not
corroded (ensure resistance of the material).
à
If possible, the parts should be cleaned dry with a cloth. Solvents
should not be used during cleaning because they could attack the
plastic parts.
à
If there is any compressed air left, blow out the parts.
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