MONTGOMERY BOATS 340 SPORT YACHT, Owner'S Manual

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
MONTEREY
BOATS
Drainage Systems
The sump system is located below the aft berth in
the cabin and accessed by removing the mattress
and opening the access hatch. The sump has a
removable lid to allow the system to be inspected
and serviced. It is essential that the sump system
be inspected periodically and any accumulated
debris removed. Manually activate the system
to verify operation.
Optional Grey Water System
If your boat is equipped with this option, all sink
drains and the head shower are drained by the
shower sump system which pumps the waste
water to the waste/grey water holding tank. The
air conditioner condensation pan is connected to
a separate sump pump system that pumps the
accumulated condensation overboard thru a fitting
in the hull side. Both sump systems are controlled
by an automatic float switch in the sump and are
protected by individual circuit breakers in the bat-
tery switch panel. They are activated whenever
the house battery switch is on and are located in
the bilge below the aft cabin sole.
The fluid level in the waste/grey water holding
tank is monitored by the “Tank Watch Monitor” in
the head compartment. When the holding tank is
full, it must be pumped out by an approved waste
dumping station. You should monitor the waste
level carefully and not allow the tank to become
full. The toilet will not flush when the tank is full
and an overfilled holding tank will force waste into
the vent filter. This will clog the filter, prevent the
sinks from draining and could cause damage to
the holding tank. It will also cause unpleasant
odors in the cabin.
Note: The overboard macerator discharge
pump option for the waste holding
tank is not available with the grey
water system.
7.5 Drainage System Maintenance
It is essential that the following items be done
periodically to maintain proper drainage of your
boat:
• Clean the cockpit and bridge deck drain rails
with a hose to remove debris that can block
water drainage.
• Clean the bilge pump strainers of debris
and check the bilge for foreign material
that can cause the automatic switches to
malfunction.
• Frequently test the automatic bilge pump
switches for proper operation. This is
accomplished by turning the knob on the
float switch until the pump is activated. You
can also use a garden hose to raise the water
level in the bilge until the it is high enough to
activate the pump.
• Flush all gravity drains with fresh water to keep
them clean and free flowing.
• Flush the drain in the air conditioning
condensation pan with fresh water periodically
to remove mold and debris that can accumulate
and block drainage to the sump system.
• Clean and inspect the shower and air
conditioning drain sump system. Remove
accumulated debris and flush with fresh water.
Frequently test the automatic pump switch for
proper operation.
Note: All drains and pumps must be properly
winterized before winter lay-up.
Note: Never use harsh chemical drain clean-
ers in marine drain systems. Perma-
nent damage to the hoses and fittings
may result.