berth. If removal of the tank is necessary, the extension top and
permanent top of the settee can be removed. There are two plates in the
tank top for inspection or clean out which may be necessary should water
be allowed to sit for a long time.
If water is left standing in tanks for an extended period of time, it
may adopt an unappetizing odor and appearance. If flushing the tank
does not eliminate this problem a mild solution of baking soda may be
used. After letting the baking soda stand for several hours the tank
and water system should be flushed thoroughly before refilling with
fresh water.
All plumbing is done with 1/2" ID reinforced PVC hose which is lead to
the galley sink and vanity sink pumps. The hand operated fresh water
pumps located in the galley and head areas are self-priming. If a pump
fails to operate, check first to be certain that there is water in the
tank, and then to see if the hose is kinked or being constricted by some
heavy object. If the hose is clear and the pump still fails to operate,
disassemble the pump and inspect the operation of the internal check
valve.
PRESSURE WATER SYSTEMS
In a pressure water system, hosing used beyond the pump is 1/2" grey
polybutylene hose. All connections are made using standard 1/2" Qest
fittings.
The pressure water system is activated by a circuit breaker switch on
the D.C. Panel. Once the system is switched on, the pump maintains a
pre-set pressure at all times. When you open one of the faucets, the
slight decrease in pressure, which results, is sensed by the pressure
regulator built into the pump. The pump starts and runs until the
faucet is shut. The pressure then builds back up and the regulator
shuts off the pump.
The water tank feeds to a 1/2" copper manifold which is valved to allow
separate use of the manual pump in the galley. When using the pump,
shut the valve leading to the galley hand pump off.
Coming off the other side of the manifold is the line leading into the
PARR 1/36400-000 strainer and then into the SURE FLOW #220-21334 pump.
The water leaves the pump at 25-35 PSI and goes to a "T" fitting. Here
the cold and hot water systems separate.
WATER HEATER AND START UP
On the hot side of the "T" fitting there is a check valve to prevent hot
water from backing into the cold water side and a manual shut off valve
used to isolate the hot water system for trouble shooting and safety
purposes. From here the water goes into the hot water tank and back to a
"T" under the galley sink. One side of the "T" feeds the galley sink
and the other the head sink with no fittings in between. The cold water
leaves the first "T" and passes back to a second "T" under the sink, and
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