Westerbeke W-70GA Manual de instalación Pagina 21
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- SOLUCIÓN DE PROBLEMAS
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Valorado. / 5. Basado en revisión del cliente
COOLING
SYSTEM
THERMOSTAT
A thennostat controls the coolant temperature as the coolant
continuously flows through the closed
cooling circuit. When
the engine is first started the closed thennostat prevents
coolant from flowing (some coolant is by-passed through
tile
thennostat to prevent the exhaust manifold from over-
heating). As the engine
wanns
up, the thennostat gradually
opens. The thennostat is accessible and can be checked
cleaned, or replaced easily.
Cany
a spare thennostat and.
gasket.
THERMOSTAT
THERMOSTAT
TEST
If
you suspect a faulty thennostat, place it
in
a pan
of
water and
bring to a
boiL
A working thennostat should open about
112".
ZINC
ANODE
A zinc anode (or pencil) is located in the raw water cooling
circuit within the heat exchanger. The purpose
of
the zinc
~node
is to sacrifice itself to electrolysis action taking place
m the raw water cooling circuit, thereby reducing the effects
of
electrolysis on other components
of
the system. The con-
dition
of
the zinc anode should be checked monthly and the
anode cleaned
or
replaced, as required. Spare anodes should
be carried onboard.
NEW
REPLACE
CLEAN
&
REUSE
NOTE:
Electrolysis
is
the result
of
each particular installation
and
vessel
location,
not that
of
the
engine.
If
the zinc pencil needs replacement, hold the hex boss into
which the zinc pencil is threaded with a wrench while
loosening the anode with another wrench. This prevents the
hex boss from possibly tearing off the exchanger shelL After
removing the zinc, note the condition.
If
the zinc is in poor
condition, there are probably a lot
of
zinc flakes within the
exchanger. Remove the end cap
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
damaged when removing the end cover. Replace the sealing
gasket (refer to your engine model's heat exchanger end gasket
part number), O-ring and cover, and install a new zinc anode.
NOTE:
The
threads
of
the
zinc anodes
are
pipe
threads
and
do
not
require
sealant.
Sealant should not
be
used
as
it
may
insulate
the
zinc from
the
metal
of
the
heat exchanger
housing preventing electrolysis action
on
the
zinc.
HEAT
EXCHANGER
Cool raw water flows through the inner tubes
of
the heat
exchanger. As the engine coolant passes around these tubes
the heat
of
the internal engine is conducted to the raw water
which is then pumped into the exhaust system and discharged.
The engine coolant (now cooled) flows back though the
engine and the circuit repeats itself.
The engine coolant and raw water are independent
of
each
other;
tins keeps the engine's water passages clean from the
hannful deposits found in raw water.
Heat
Exchanger
Service
After approximately 1000 hours
of
operation, remove, clean
and pressure test the engine's heat exchanger. (A local auto-
motive radiator shop should be able to clean and test the heat
. exchanger).
NOTE:
Operating
in
silty
a1ld/or
tropical waters
may
require
that a heat exchanger cleaning
be
peifol71zed
nwre
often
then
every 1000
hours.
Engines & Generators
15
- OPERATORS 1
- WARNING 2
- INSTRUCTIONS 3
- INSTALLATION 6
- CONTENTS 7
- "ii; 8
- EXCHANGER--k--...p!!J~ 8
- ~2¥fii4;l:143=t 9
- INTRODUCTION 10
- Engines & Generators 10
- It allows 11
- DESCRIPTION 12
- INSPECTION 13
- CAUTION: 13
- Stopping 16
- Procedure 16
- MAINTENANCE 18
- SCHEDULE 18
- As the engine 19
- & Generators 19
- COOLING 21
- 3. Remove 22
- LUBRICATING 23
- CARBURETOR 26
- 0~_-.MULTIMETER 28
- "BATIERY 30
- SENSE" 30
- ALTERNATORS 31
- W ALARM 32
- TACHOMETER 34
- /' 36
- TESTING 37
- RESISTANCE 37
- TROUBLESHOOTING 38
- ~~~~'!.fJ 42
- 'Mi7J 42
- TRANSMISSION 43
- CONNECTIONS 44
- COUPLINGS 44
- CHECKING 45
- OPERATING 45
- Lay-up/Winterize 51
- Problem 52
- Probable 52
- VerificationJRemedy 52
- Sta-Bil gasoline 54
- BioBor and Sta-Bil should 54
- STANDARD 59
- CONVERSION 59
- I I I I I 60
- I I I I I I I 60
- I I I I 60
- I I I I I I I I 60
- SUGGESTED 61
- WM/DW1081-5/04 64
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