Operation
33
6.5.2 Disassembling the pump chamber
DANGER
–
Touching electrical parts can cause a fatal electric shock.
Disconnect the power supply to the pump.
WARNING
–
The fluid can heat up parts of the pump. You could suffer
burns. Allow the pump to cool down.
►
Remove the screws (1 / QF5C item 8 Figure 9) from the housing.
►
Remove the locking screw (2 / PQ5A, item 3 Figure 8).
►
Loosen the clamping ring screw (3 / QF5C, item 9 Figure 9).
►
Remove the pump chamber (1).
6.5.3 Replacing the elastomers
DANGER
–
The alkaline solutions used for cleaning are strong. They
could cause burns. Wear protective goggles, protective gloves and safety
clothing. Observe the safety data sheet.
►
Disassemble the pump chamber (see chapter 6.5.2 Disassembling the
pump chamber on page 33).
►
Set down the pump chamber so that there is no load on the connecting
nozzles.
►
Remove the screws (1 / QF5C, item 10; 11 Figure 9).
►
Remove the screw (2 / QF5C, item 7 Figure 9).
►
Remove the clamping ring (3 / QF5C, item 4 Figure 9).
►
Remove the diaphragm housing cover (4 / QF5C, item 3 Figure 9).
►
Remove the diaphragm together with the diaphragm support (5 / QF5C,
item 3; 6.1 Figure 9).
Replacing the diaphragm
►
Turn out the diaphragm.
►
Tighten the diaphragm support (1 / QF5C, item 3; 6.1 Figure 9).
►
Replace the valves (1). Use the assembly shaft valve (QF5C, item 6.2
