MJM Yachts 29z Outboard - Manual (Page 29)

CHAPTER 7 FRESHWATER SYSTEM
- 29 - 29z
7.1 GENERAL
Your boat incorporates a pressurized freshwater system. A single 30-gallon tank supplies a pump
which supplies pressure when turned on by demand.
7.2 FILLING
A deck fill is provided on the starboard side boarding step and is labeled WATER. As the tank is
filled, air escapes thru the vent.
7.3 USING
& MAINTAINING
The freshwater pump is turned on at the DC breaker panel. If the pump is heard running
continually, check that no faucet has been left open. If this is not the case, turn off the pump and
check that the tank has not been emptied. The freshwater system is not a perfectly sealed circuit
and it is not uncommon to hear the pump cycle, but if this short cycling occurs more than once
per hour, the system and/or pump should be checked for leaks. The pump is protected from
sediment by an in-line strainer mounted adjacent to the pump. The strainer should be checked
periodically and cleaned if necessary if the stream of water is dimished.
7.4 HOT
WATER
Water in the six gallon hot water tank is heated in one of 2 ways (1) whenever the engine is
operating or when the engine is not running, by turning on the “Water Heater” breaker on the
optional AC Electrical Panel. It is part of the freshwater system and does not need to be filled
separately. There is virtually no need for maintenance, but the connections at the tank should be
visually inspected occasionally.
The coolant lines from the engine to the tank have shut-off valves, located on the forward face of
the engine. These need to open in order for the engine to heat the water in the tank. For service,
or in case or a ruptured line, these valves can be closed to stop this water loop.
7.5
WATER PURIFIER (Option)
[See also Seagull owner’s manual] The galley is fitted with a water purifier. This purifier has a
cartridge (in stainless pressure vessel under sink) that should be replaced annually or when
reduced water flow indicates that it has become plugged with sediment. It is best to clear the
pressure water system of any winter anti-freeze before running water through the cartridge.
The filter is rated for 1000 gallons, which is approximately 15 water tanks’ worth.