Flushing The Cooling System - Westerbeke 3.0 BPMG Operator's Manual

· FLUSHING THE ENGINES COOLING
SYSTE~
Engine flushing should be performed a minimum of at least
t.W,ice per operating season, more often in those areas \Vhere
the unit may not.be s1,1bjectto winter storage. Int?ose .
locations where the unit is used year round, flushing the unit
once every
4
months is recommended.
This procedure is best accomplished by disconnecting the
water intake hose from the vessel's thru-hull fitting. Insert
the hose end into a large container of fresh water.
Close the thru-hull intake valve before disconnecting
the hose.
Before starting the engine, remove the engine thermostat
(replace the gasket and cover). This will ensure a full flow
of water thru the engine. Re·install the thermostat once
Run the unit for 10 minutes or longer to adequately flush the
cooling system.
The
fresh
water will flush out the engine's water passages and
exhaust lines: If the engine is being stored and there is a prob-
ability of freezing, flush the engine with fresh water and then
prior to shutting the unit dowp. Substitute the fresh water
supply with a concentrated antifreeze mixture and
run
this
through the engine to provide freeze and corrosion protection
for both the engine and exhaust system.
When recommissioning, make certain the thru-hull intake
valve is open so the engine will quickly receive cooling
water.
flushing is complete.
A
NOTE: Prior to flushing the engine, inspect the coolant by-
CAUTION:
Do not connect an external fresh water
pass hose and its attachment fittings to insure that there are
supply directly to the engine's coaling system. This can
no obstructions occurring in the fittings or the hose.
cause naading of the engine resulting in internal
Provide an external fresh water supply for the container to
maintain the water level in the container while the unit is being
i"ll:::r--,da~_ma
___ ige.
v ' - - - - - - - - - - - - - - - -
operated during the flushing process.
. . RAW WATER ALTER
EXTERNAL FRESH
{ \ WATER SUPPLY
.RAW WATER PUMP
FRESHWATER
Engines & Generators
37