Jeanneau SUN ODYSSEY 440, Owner'S Manual, Page: 177 / 240

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189212 RCD-2
Index C
13.5.7 Water maker
General points
- The watermaker allows fresh water to be produced from the sea water.
- The watermaker can be supplied either:
- by DC direct current,
- by AC alternating current.
- A circuit-breaker protects the circuit.
- Several elements make up the watermaker circuit:
- sea water intake,
- sea water filter(s),
- circulation pump,
- electric valve for automated rinsing,
- manual rinsing valve,
- motor block and high-pressure pump,
- membrane block,
- control panel,
- sea water discharge valve.
Operation
- Sea water enters the membrane block under pressure, which allows only pure water to pass
out.
- A sensor at the membrane block exit allows the measurement of the salt content of the water
filtered in this manner. A three-way valve allows drinking water to be directed automatically to
the tanks or water that is too salty to be discharged to the sea.
- The drinking water filtered by the membranes is sterile; it is advisable to treat it with a weak
dose of chlorine from time to time and to mineralise it if consumption is prolonged.
- Fresh water production depends on the temperature of the sea water used and the
cleanliness of the filter.
Operation
- Before starting the watermaker circuit, check that the supply and discharge valves are open.
- Using the watermaker with DC supply needs a lot from the battery bank: make sure to
recharge them regularly by running the boat's engine.
- The different quality and salinity of the sea water used affect the production of fresh water; it
is advised not to use the watermaker in navigation areas or where the water is muddy, polluted
or brackish.
- The membranes are temperature-sensitive; in the event of negative (0°C and less) or too hot
(60°C and over) temperatures, the membranes are likely to tear.
13
WATER SYSTEMS