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Servicing
22
Translation of Original Operating and Installation Instruction, English, KNF 310329-310332 05/19
9 Servicing
9.1 Servicing schedule
Component
Pump
Hose connections
Diaphragm and reed valves
Tab. 11
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
WARNING
During cleaning work, ensure that no fluids enter the interior of the
housing.
Servicing interval
à
Periodic inspection for external
damage or leakage.
à
Periodic inspection for notice-
able changes to noises and vi-
brations
à
Periodic inspection for external
damage or leakage.
à
Replace no later than if there is
a decrease in the pump flow
rate.
à
Replace if the pressure or flow
rate of the pump changes with-
out apparent reason.
Risk of burns from hot pump parts
The pump head or motor may still be hot after op-
eration of the pump.
à
Allow pump to cool after operation.
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 pump with suitable measures.
Diaphragm pump N286.15
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