Dometic RO400 - Fitting Pump-; Membrane Service Kit

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9
FITTING PUMP- / MEMBRANE SERVICE KIT
The numbers within brackets refer to g. V.
Disconnect the water purier from electricity and water 1.
supplies.
Remove the top cover (two screws at rear).2.
Remove the hoses from the backside of the product: the 3.
inlet-, reject- and puried water hose.
Remove the motor assembly, see “4. CHANGING MO-
TOR”, point 3-8, and put it aside.
Disconnect the hose from the pressure regulating valve 5.
that leads to the tee-connection with the conductivity
sensor ().
Remove the plastic nut holding the puried water outlet 6.
to the casing. Lift out the assembly and attached com-
ponents and let it hang outside the casing. ()
Disconnect the hose from the tee-connection (at the 7.
high pressure pump intake) that leads to the prelter
assembly ().
Remove the ush valve from the brass gable, see 8.
“CHANGING FLUSH VALVE”, points 5-6.
Release (do not remove) the three locking pieces (9. 4a)
just enough to rotate and tighten them again inside the
edge of the membrane pressure vessel (4b).
Remove the ¼” hose for the inlet pressure sensor from 10.
the pressure regulating valve ().
Lean the product backwards to pour out the water inside 11.
the vessel through the hole for the ush valve. It will
take less time if the white plastic plug (6) on the brass
gable is removed rst.
Attach a tee-handle (12. ) to the M8 thread () near the
centre of the brass gable. It will make it easier to lift out
the assembly out of the vessel.
Press down the pump/membrane assembly into the 13.
vessel () to remove the three sections of locking rings
().
SERVICE
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