Fitting Pump- / Membrane Service Kit - Dometic RO400 Service Manual

fitting pump- / memBRane seRViCe kit

The numbers within brackets refer to fig. V.
1. Disconnect the water purifier from electricity and water
supplies.
2. Remove the top cover (two screws at rear).
3. Remove the hoses from the backside of the product: the
inlet-, reject- and purified water hose.
4. Remove the motor assembly, see "
", point 3-8, and put it aside.
TOR
5. Disconnect the hose from the pressure regulating valve
that leads to the tee-connection with the conductivity
sensor (1).
6. Remove the plastic nut holding the purified water outlet
to the casing. lift out the assembly and attached com-
ponents and let it hang outside the casing. (2)
7. Disconnect the hose from the tee-connection (at the
high pressure pump intake) that leads to the prefilter
assembly (3).
8. Remove the flush valve from the brass gable, see
"
chANgINg flUSh VAlVE
9. Release (do not remove) the three locking pieces (
just enough to rotate and tighten them again inside the
edge of the membrane pressure vessel (4b).
10. Remove the ¼" hose for the inlet pressure sensor from
the pressure regulating valve (5).
11. lean the product backwards to pour out the water inside
the vessel through the hole for the flush valve. It will
take less time if the white plastic plug (6) on the brass
gable is removed first.
12. Attach a tee-handle (
centre of the brass gable. It will make it easier to lift out
the assembly out of the vessel.
13. Press down the pump/membrane assembly into the
vessel (9) to remove the three sections of locking rings
(10).
9 10
seRViCe
chANgINg MO-
", points 5-6.
7) to the M8 thread (8) near the
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1 4a
4a)
2
3
- 38 -
7
4B
6 8
19 5
V