KNF LABOPORT N86.18 Originalbetriebsanleitung Seite 80

Servicing
1 Housing
2 Intermedi-
ate plate
3 Head plate
4 Head plate
screw
7 Valve
plates/seals
9 Diaphragm
10 Diaphragm
support
11 Shim ring(s)
32
b.) Replacing the diaphragm
Fig.5: Replacing the diaphragm
1. Carefully insert a small screwdriver between the housing
(1) and the outer edge of the diaphragm (9). Then lever up
the edge of the diaphragm slightly.
2. Lift the diaphragm (9) on opposing side edges. Then
grasp the diaphragm (9) and unscrew it counterclockwise
by about two turns.
3. Hold the pump in one hand so that the pump head points
downwards. Then turn the diaphragm (9) all the way out
counterclockwise.
4. Remove the diaphragm support (10) and the shim(s) (11)
from the threaded bolt of the diaphragm (9) and put them
to one side.
5. Check all parts for soiling and clean the parts if necessary
(for further information, see Chapter 9.2 Cleaning [} 29]).
6. Push the diaphragm support (10) and the shim ring(s) (11)
onto the threaded bolt of the new diaphragm (9).
Translation of Original Operating and Installation Instruction, KNF
3
10
11
Diaphragm pump N86.18 / N811.18
4 2
9
1
7
121435-121438 02/23