MJM Yachts LLC 40z, Руководство пользователя

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Chapter 5, Water Systems, MJM 40z Owner’s Guide page 26
6
WATER SYSTEMS
6.1 F
RESH
W
ATER
BREAKER PANEL
settings:
FRESH WATER PUMP
breaker on.
Fresh water may be supplied from two sources:
1. A 100-gallon
FRESH WATER TANK
under the pilothouse sole is
filled through a deck fill fitting on the starboard side near the helm labeled
WATER.
Air is vented as the tank fills. The
FRESH WATER GAUGE
is located
at the right bottom corner of the
120 V AC breaker panel
.
2. A
DOCKSIDE HOSE INLET
at port in the cockpit (see sidebar)
bypasses the
FRESH WATER TANK
and the
FRESH WATER PUMP
to
provide dockside water and dockside pressure. Don’t try to fill the tank
with it; a check valve keeps the dock water supply from backing up into
the
FRESH WATER TANK
.
Don’t leave the boat for any length of time with the
DOCKSIDE
HOSE INLET
connected. If it were left on and a fitting failed, the boat’s bilge
pumps would work continuously to pump it out.
Fresh Water Pump
A Johnson Aqua Jet WPS 10.4 Duo 12V
FRESH WATER PUMP
provides
fresh water pressure. The pump is in the pilothouse port settee locker. It
runs when a faucet, the head, anchor chain wash, wiper wash,
showers, etc., are used. It has two switches to maintain pressure in a
useable range so the pump doesn’t switch on every time fresh water is
used. When pressure drops below the minimum, the pressure switches
turn the pumps on and build pressure to the maximum. The pumps have
outlet check valves that maintain pressure when pumps are off. The
pump is protected from sediment by an in-line strainer mounted
adjacent to the pump. Check and clean the strainer periodically.
If the pump runs continuously, a faucet might be open. The transom
shower valve is a frequent culprit. If nothing is on, check that the
FRESH
WATER TANK
has water. Then look for leaks in the lines. An air bubble in
the line may defeat a pressure switch and cause the pump to fail to
operate. Opening a faucet and turning the FRESH WATER breaker off for a
moment and on may fix it. If that doesn’t work, attach a hose to the
DOCKSIDE HOSE INLET
and run water through various fresh water outlets.
6.2 H
OT
W
ATER
Water is heated in the
HOT WATER TANK two
ways:
1. With an electrical immersion element
2. With an internal heat exchanger that uses hot coolant from the engine
heat exchanger (when the engine is running)
The 13-gallon
HOT WATER TANK
is under the port pilothouse settee. It’s
part of the freshwater system and doesn’t need separate filling.
If you want hot water and haven’t run the engine, turn on the
WATER
HEATER
breaker on the right side of
120V AC panel
. The
WATER HEATER
is
a high-load appliance and will require the
GENERATOR
to be on or
SHORE
DOCKSIDE HOSE INLET with a hose
connected
Johnson Aqua Jet WPS 10.4 Duo 12V
FRESH WATER PUMP
INDEL ISOTEMP 13-gallon HOT
WATER TANK