KNF Labor N022.18 Manual De Instrucciones página 98

Servicing
Spare parts Spare part*
Tool Quantity Tool/material
Information on
the procedure
38
14. For two-headed pumps:
Perform work steps 3 to 13 on the second pump head.
15. Fasten the cover (H) with the 4 cheese head screws (G).
16. For two-headed pumps:
Pull the hose (pumps N026.1.2.18: the hoses) of the
pneumatic connection back onto the hose connector.
For pump types N026.1.2.18: Retighten the hose clamp
on the pneumatic connection on the pressure side.
8.3.2 Change diaphragm and valves (ST version on
project basis)
Diaphragm
Countersunk screw (D)
Valve plate
Tab.25: Spare parts
*According to spare parts list, Chapter 9.1 Spare parts [
** According to Fig. 6
1 Allen key, 4 mm
1 Screw driver blade width 6.5
1 Adjustable face spanner wrench for two-hole nuts
or KNF wrench for retainer plate (.9 version only)
1 Pencil
Tab.26: Tool
The diaphragm and valves are the only wearing parts in the
pumps. They are easy to replace.
The valves and diaphragm should generally be replaced at
the same time. If the diaphragm is not replaced at the same
time as the valves, the specified output of the pump can no
longer be ensured after the maintenance is performed.
With multi-headed pumps, parts may be interchanged be-
tween the individual pump heads.
à
Replace the diaphragm, valve springs and seals of the in-
dividual pump heads in sequence.
Translation of Original Operating Instruction, KNF 121224-121388 04/23
Diaphragm pump N022.18, N026.18
Item number**
(F)
(Z)
Number per pump
head
1
1
1
}
48]