4. Apply a little food grade grease on the new small O-rings.
5. Put both O-rings on the valve block on the small bore holes.
6. Put the new membrane in its recess on the valve block with the brass taper downwards
and the membrane with bypass upwards.
7. Place the new spring in the middle of the membrane with the spring size increasing
upwards.
8. Carefully position the valve cover on the membrane. Make sure that the spring stays
upright.
Position the valve cover such that:
a. The P indication is positioned to the middle of the valve block and the A
indication is facing outward to the side of the valve block.
b. The NC symbol on the side of the valve cover must be at the A side of the valve
cover (to the side of the valve block) and the NO symbol at the P side of the
valve cover (to the middle of the valve block).
c. The cable connectors are on the A side of the valve block.
Manual flush)..
4.2.5 Cleaning the solenoid valve
To clean the solenoid valve:
1. Remove the valve as described in 4.2.3 Exchanging the solenoid valve.
2. Clean the membrane using water and cloth or a soft brush.
3. Clean the O-rings.
4. Clean the recess of the membrane in the valve block.
5. Remove dirt from the boreholes of the O-rings.
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