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QF150S; edition 2016-05; page 13 of 19
4.1. Replacement of diaphragm, valves and o-rings
The replacement of the diaphragm and the valves can be conducted by the operator. The following
drawings describe it step-by-step (maintenance kit PSKITQF15MU).
In case of bursting diaphragms by overpressure we advice also to change the bearing unit
(PSKITWLC155, see chapter 4.2.).
4.1
.
1.
Disassembly of the pump chamber
4.1.2. Exchange of the elastomer parts