KNF N963, Operating And Installation Instructions

Page: 22 / 32

Servicing Diaphragm Pump N936
22 Translation of Original operating and installation instruction, English, KNF 320276-320275 09/19
à
If possible, the parts should be cleaned dry with a cloth. Solvents
should not be used during cleaning because they could attack plastic
parts.
à
If compressed air is available, blow out parts.
9.3 Replacing diaphragm, valves and O-rings
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.
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 pump to cool after operation.
à
Always replace diaphragm, valves and O-rings together to maintain the
performance and safety of the pump.
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 pump with suitable measures.
Spare parts
Spare part* Position designation** Quantity
Diaphragm (17) 1
Valve (14) 2
O-ring valve (13) 2
O-ring under diaphragm (18) 1
Retainer plate screw (15) 1
Tab. 11 *According to spare parts list, Chapter 11.1 Spare parts
** According to
Fig. 6
Tool and material
Quantity Tool/material
1 Torx TX30 screwdriver
1 Torx TX25 screwdriver
1 Felt-tip pen
Tab. 12 *According to accessories list, Chapter 11.2 Accessories