Cooling - Fresh Water System, Heat Exchanger - Beta Marine Beta 10 Operator's Maintenance Manual

Filling the Freshwater System
New engines are supplied with the fresh water 'coolant'
drained off. The following instructions must be followed to fill
the system.
a) Pour into a clean bucket a mixture of both fresh water
and anti-freeze; with an anti-freeze ratio of 33% to 50%
(see next page). For the required volume see technical
specification page 4.
b) Check that the coolant drain tap or plug is turned off.
See photo 28.
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c) Fill engine with freshwater / anti-freeze solution through
the top of the heat exchanger or header tank with the
filler cap removed. See photo 29.
29
d) Fill header tank to the top of the filler neck and replace
e) Run the engine for 5 minutes on no load (out of gear)
f)
g) If a calorifier is fitted care must be taken to see that this
h) Run the engine on one third load for 15 minutes,
Important: Removal of the pressure cap when the engine is
hot can cause severe injury from scalding hot water under
pressure. Always allow the engine to cool and then use a
large cloth when turning the cap anti-clockwise to the stop.
This allows the pressure to be released. Press firmly down on
the cap and continue to turn anticlockwise to release the
pressure cap.
i)
j)
k) Anti-freeze solutions should be drained off every 2 years
water / antifreeze
goes in here
Note: When draining your fresh water system, ensure the
engine has cooled sufficiently to prevent scalding from hot
pressurised water. Prior to draining a cold engine, remove the
filler cap from the header tank and then open the water drain
tap. This allows the water to drain freely from the system.
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cap. Press down firmly on filler cap and hand tighten in
a clockwise direction.
and check coolant level, this will help remove air from
the system. Top up as necessary.
Check system for leaks.
is also full of coolant and all the air is removed. (See
calorifier fitting notes under Section 1).
preferably with the boat tied up. As the system warms
up coolant may be expelled from the overflow pipe into
the bilge. Stop the engine and allow the engine to cool
down before removing the pressure cap and top up the
coolant to 25 mm / 1 inch below the filler neck.
Repeat (h) if coolant level is more than 1 inch below the
base of the filler neck when the engine has cooled down.
2
Run engine on / full load for 20 minutes, check for
3
leaks and repeat (i) if necessary.
and replaced with a new solution.