KNF N1200.12, Original Operating And Installation Instructions

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Diaphragm Pump N1200.12, N1400.1.2.12 Servicing
Translation of Original operating and installation instruction, English, KNF 308930-308933 02/22 29
8.2 Cleaning
8.2.1 Flushing the pump
When transferring dangerous and environmentally hazardous media, KNF
recommends flushing the pump with air at atmospheric pressure for a few
minutes prior to switch-off (if necessary for safety reasons: with an inert
gas) to extend the service life of the diaphragm.
à
Discharge the media safely.
8.2.2 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.
à
Wear protective equipment if necessary, e.g.,
protective gloves, goggles.
à
Clean the pump with suitable measures.
NOTICE
During cleaning work, ensure that no fluids enter
the interior of the housing.
à
Only clean the pump with a dry wiping cloth. When cleaning, use no
solvents if possible as these can affect the plastic parts.
à
Only use solvents during cleaning if head materials are not affected
(ensure resistance of the material).
à
If compressed air is present, blow out the components.
8.3 Replacing working diaphragm, safety diaphragm and
reed valves
Requirements
à
Disconnect the motor from mains and ensure that it is voltage-free.
à
Allow the pump and the motor to cool.
à
Clean the pump and free the pump of hazardous materials.
à
Remove the hoses/pipes from the pneumatic pump inlet and outlet.