mjm yachts 3z, Manual

Page: 31 / 59

6.3 G
RAY
W
ATER
Sumps
A
GRAY WATER SUMP BOX
collects water from the shower drain,
air conditioner condensate, and refrigerator condensate. Gray water can
be legally discharged overboard. The sump pump switch on the
12V
DC
panel provides power to a pump with a float switch to empty the
tank. It runs to the stbd fwd through-hull. Remove the tank cover and
clean tank and strainers periodically.
The Gray water sump box is located below the bottom companionway
step.
GRAY WATER SUMP
Bilge Pumps
There are two electric bilge pumps. They are located:
Aft BILGE PUMP
BILGE PUMP SWITCH

Aft in the SEAKEEPER compartment
 Aft in the central cockpit compartment at the
transom
They are wired directly to the 24-hour fuse panel so they function even if the
DC MAIN breaker is off. (See 24-Hour Circuits, page 16.)
Three 3-way switches at the helm control the pumps. (See page 10.) The
pump will run in the AUTO position if water is present. The pump will run in
the MANUAL position whether there is water in the bilge or not. Please
ensure that the switches remain in the "Auto" position anytime the boat is in
the water.
6.4 R
AW
W
ATER
Raw Water (seawater) is used for heat exchange for the GENERATOR,
optional SEAKEEPER and the AIR CONDITIONER. Two raw water strainers
and seacocks with shutoff valve, double clamped to its hose, have a strainer
that should be checked regularly.