Cleaning And Reassembling The Suction Valve - dosatron D 20 S Manuel D'utilisation

CHANGING SEALS IN THE INJECTION ASSEMBLY (cont...)
CHANGING THE INJECTION SEALS
- Turn off the water supply and allow the pressure to drop to zero.
- Follow the dismantling instructions as described before.
- Grease the seal with silicone (Fig. 16-J).
- Re-assemble in the reverse order to the above by hand.
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Fig. 16
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CLEANING AND RE-ASSEMBLING THE SUCTION VALVE SEAL
- Turn off the water supply and allow the pressure to drop to zero.
- Loose the clamp on the suction hose with a screwdriver (Fig. 17-T) and
remove the suction hose.
- Unscrew and remove the black nut (Fig. 17-N).
- Pull downwards to remove the suction valve assembly.
- Remove the seal on top of the short valve (Fig. 17-C) and replace it. Turn
it around the nipple in order to be sure about its correct seating. Take care
not to damage the listel.
- Proceed in the same way to change the seal of the long valve (Fig. 17-L).
- Also change the o-ring (Fig. 17-J).
- Re-assemble in the reverse order to the above by hand.
Fig. 17
N
T
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C
L
J