Diaphragm pump N87.9 EX
Servicing
Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21
27
à
If compressed air is present, blow out the components.
9.3 Replacing the structured diaphragm and valve plates/
seals (TT design)
Requirements
à
Disconnect the motor from mains and ensure that it is voltage-free.
à
Clean the pump and free the pump of hazardous materials.
Spare parts
Spare part*
Item designation**
Number per pump
head
Structured diaphragm
(7) in Fig. 4
1
Valve plates/seals
(12) in Fig. 4
2
Tab.15 *According to spare parts list, Chapter 11.1 Spare parts
Tool and material
Quantity
Tool/material
1
TORX® screwdriver T10
1
TORX® screwdriver T20
1
Phillips screwdriver
Thread locker
(Loctite 222 or comparable product)
1
Felt-tip pen
Tab.16
Information on the procedure
à
Always replace diaphragm and valve plate/seals together to maintain
the performance of the pump.
