KNF Labor N022.18 Manual De Instrucciones página 102

Servicing
Requirements
Spare parts Spare part*
Tools and mate-
rial
Information on
the procedure
42
33. For two-headed pumps:
Pull the hose of the pneumatic head connection back onto
the hose connector.
For pump types N026.2.18: Retighten the hose clamp on
the pneumatic connection on the pressure side.
8.3.3 Change diaphragm and valves (SP version on
project basis)
à
Disconnect the motor from the mains and ensure that it is
voltage-free.
à
Free the pump of hazardous materials.
Diaphragm
Valve spring (stain-
less steel)
O-ring
Tab.27: *According to spare parts list, Chapter Spare parts
** According to Fig. 7
Quantity Tool/material
1 Allen key, 4 mm
1 Screw driver blade width 4.5 mm
1 Adjustable face spanner wrench for nuts with two
holes or KNF wrench for retainer plate (see Ac-
cessories).
1 Pencil
Tab.28:
à
Always replace diaphragm, valve springs and O-rings to-
gether to maintain the performance of the pump.
With multi-headed pumps, parts may be interchanged be-
tween the individual pump heads.
à
Replace the diaphragm and valve springs of the individual
pump heads in sequence.
Translation of Original Operating Instruction, KNF 121224-121388 04/23
Diaphragm pump N022.18, N026.18
Item designation** Number per pump
(F)
(M)
(B)
head
1
2
2