Westerbeke 12C- TWO User Manual

. COOLING SYSTEM
Zinc Anode #011885
A zinc anode, or pencil, is located in the raw water cooling
circuit within the heat exchanger. The purpose of having the .
zinc anode is to sacrifice them to electrolysis action takjng
place in the raw water cooling circuit, thereby reducing the
effects of electrolysis on other components of the system.
The condition of the zinc anode shonld be checked monthly
and the anode cleaned or replaced as required: Spare anodes
should be carried on board.
NEW
REPLACE
REPLACE
ZINC ANODES
CLEAN AND
REUSE
NOTE: Electrolysis action is the result of each particular
installation and. vessel location; not that of the engine.
. If the zinc anodes need replacement, hold the hex boss into
which the zinc anode is threaded with a wrench while loos~
erung the anode with another wrench. 1his prevents· the hex
boss. frompossibly tearing off the exchanger shell. After '
removing the iinc, note the condition of it. If the zinc is in
poor condition, thOte are probably a lot of zinc flakes within
the exchanger. Remove the end of the heat exchanger and
clean the inside of all zinc debris. Always have a spare heat
exchanger end gasket in case the present one becomes dam-
aged when. ~emoving ~e end cover. Replace the gasket (refer
to your engIne model s heat exchanger end gasket part num-
ber), O-ring and cover, and install a new zinc anode.
NOTE: The threads of the zinc anodes lire pipe threads and
do .not require sealant. Sealant shoultlnot be used as it may
insulate the zinc from the metal of the heat exchanger hous-
ing preventing electrolysis action on the, zinc.
Heat Exchanger Service
After approximately 1000 hOl/rs of opera~on, remove, clean
and pressure test the engine's ~eat exchanger. (A local auto-
motive radiator shop should be able to clean and test the heat
exchanger.). .,
. NOTE: Operating in siliy and/or tropical waters may require
that a heat exchanger cleaning be performed' more often than
every 1000 hours.
HEAT EXCHANGER
COVER
SECURING
BOLT
INSPECT
BOTH ENDS
OUT EVERY 'DRAIN
100 HOURS
CLEAN OUT DEBRis
TYPICAL ASSEMBLY
~
IRBlEED
~ PETCOCK
.~=.
ANTIFREEZE
CO'OlANT
DRAIN'
(PftCOCK OR HEX PLUI1;'
NOTE: When installing the heat exchanger end. covers. Be
sure that the end. cover seeUling,bolt.'s sealing O-ring is
installed. Failure to install miiiealingO.ring can result in
elld plate failure/sea water leakage.
Engilles & Gellerators
19

Westerbeke 12C- TWO Specifications

General

Brand	Westerbeke
Model	12C- TWO
Category	Engine
Language	English