Diaphragm pump N96_DC-B-M
Servicing
Translation of Original Operating and Installation Instruction, English, KNF 316836-316838 06/22
29
8.3 Replacing diaphragm and valve plates
Requirements
à
Disconnect the pump from power and ensure that it is voltage-free.
à
Clean the pump and free the pump of hazardous materials.
à
Remove the pneumatic hoses from both the inlet and outlet of the
pump.
Spare parts/tools
Spare part/tool
Quantity
Spare part set*
1
Torx TX10 screwdriver
1
Tab.16 *acc. to Chapter 10 Spare parts and accessories
Information on the procedure Diaphragm and valve plates/seals are the only wear parts in the pumps.
They are easy to replace.
Valve plates/seals and diaphragm should generally be replaced at the
same time. If the diaphragm is not replaced at the same time as the valve
plates/seals, the specified output of the pump can no longer be ensured af-
ter the maintenance is performed.
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.
The diaphragm and valve plates/seals are to be replaced in the following
order:
a.) Initial steps
b.) Remove pump head
c.) Replace diaphragm
d.) Replace valve plates/seals
e.) Mount pump head
f.) Final steps
