Monterey Boats 350 Sport Yacht, Owner'S Manual

Page: 61 / 196

61
350 SPORT YACHT
Chapter 6:
RAW WATER SYSTEM
6.1 General
In the raw or sea water systems, all water pumps
are supplied by hoses connected to ball valves
and thru-hull fittings located in the in the bilge.
Always make sure the ball valves are open before
attempting to operate any component of the raw
water system.
The air conditioner uses a 120-volt AC sea water
supply pump. This is the only 120-volt AC pump
in the system and it is automatically activated
when the air conditioning or heating system is in
use.
Priming the System
The intake for the air conditioner sea water pump
is equipped with a scoop and ball valve. If the
pump runs but will not prime after cleaning the
strainer or at the time of launching, make sure
the valve is open. If the pump still won’t prime, it
may be air locked. Make sure the valve is open
and run the boat at or above 15 M.P.H. The wa-
ter pressure from the scoop will force the trapped
air through the pump and allow it to prime. If this
procedure doesn’t work, contact your Monterey
or Marine Air dealer.
Closing the thru-hull ball valves before the boat is
hauled from the water will help to eliminate air
locks in raw water systems.
Note: It may be necessary to reprime the raw
water system if the system is not used
for an extended period and at the time
of launching.
6.2 Air Conditioning
The air conditioner is self-contained and sea wa-
ter cooled. An AC centrifugal raw water pump
supplies sea water that cools the condensing unit
as it circulates through the system and is dis-
charged overboard. The pump is located in the
bilge below the rear aft cabin berth. It is acti-
vated whenever AC current is available and the
air conditioning system is operating.
Sea water is supplied to the pump from a thru hull
fitting located in the hull near the pump. A sea
strainer between the pump and thru hull fitting
protects the system from contaminants that could
damage the pump or the air conditioning system.
Make sure the sea water pump receives adequate
sea water by periodically cleaning the sea strainer
basket.
Cleaning the Sea Strainer
• Turn the air conditioner off at the control panel.
Then turn the air conditioning breaker in the
AC panel off.
• Remove the rear aft berth mattress and ac-
cess panel to expose the air conditioner pump
and strainer.
• Close the water intake valve.
Air Conditioning, Thru-Hull Valve, Pump and Strainer