Water Systems
9.5
Always ensure engine, or generator seacocks, or
intakes are open before starting. Failure to do so
could overheat and a damage these components.
Before re-installing the cap onto the strainer, check the
‘o’ ring that is the seal on the cap. Check for wear, or
leakage. Replace if needed (Contact your dealer for
replacement).
Hot coolant under pressure may boil or explode and
cause burns or other personal injury when the pres-
sure cap is removed. Allow the engine to cool, then
open the cap slowly to allow any pressure to vent
before completely removing the cap.
Before using any system that requires raw cooling
water, ensure that the intake valve is opened and the
strainers are not clogged. Section 9.4.6 illustrates
the procedure for cleaning your strainers.
9.4.6 Water Heater
The fresh water pump supplies water to the water heater
from the water tanks. A breaker on the AC side of the
MDP, and a rocker switch on the control panel controls
power to the heater.
Follow these procedures when using the water heater:
1. Make sure the water heater is full of water. Open a
hot water faucet and allow a steady stream of water to
flow out of the faucet to remove all air from the hot water
circuit.
2. With the generator running or shore power connected
to your boat, switch on the WATER HEATER circuit
breaker at the AC side of the MDP.
3. Wait for the water in the tank to heat up, then use as
you would at home.
IMPORTANT!
Water temperatures in excess 110ºF (43ºC) are
dangerous and may cause scalding, severe injury or
death
maintenance.
To clean a strainer, first, make sure that the supply valve
is in the Off or closed position. Failure to close the intake
or seacock could result in a flooded boat. Next, remove
the “collector” or glass encasement that houses the
screen. Remove any objects collected inside and wash
the screen.
9.4.3 A/C Pickup and Strainer (Air Conditioning
Option)
At the end of this section, you will find an illustration of the
A/C cooling water arrangement. It is important to always
ensure that the intake valve (see mechanical arrange-
ment in the Boating Safety Chapter, as well) is always
open before using the A/C System. In the pumps sub-
section of this chapter you will see the image of these
components. Fig. 9.2.
If you purchased your boat with the air conditioning
option, you will find the documentation for the operation
of this system in the owner’s packet of the manufacturer’s
owner’s/operator’s manuals.
9.4.4 Generator Cooling Pickup and Strainer
(Generator Option)
The generator is an engine and, just like the main
engines, requires cooling water. Water is supplied to the
generator through the intake and strainer located just
aft of the generator. Raw water is taken in via the raw
water intake and then passes through the strainer and is
discharged through the exhaust of the generator. Consult
the DC Electric Chapter (Chapter 7) of this manual for
more information about your generator option.
9.4.5 Engine Seacocks and Strainers
It is a very important function for your main engines to
remain a specific temperature when operating. This is
done with the aid of raw water from the main engine
seacocks. Heat from the closed cooling system on the
engines is transferred to the cooler seawater through
heat exchangers inside the engine. The raw water is then
discharged through the exhaust.
To clean your main engine strainer, first close the main
engine seacock, remove the top cover on the strainer
remove the screen and clean.
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