Westerbeke 15.0KW -60Hz EDT Manual del operador Pagina 53
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COOUNG SYSTEM
Westerbeke marine gasoline engines are designed and equipped
for fresh water cooling. Heat produced in
the engine
by
combustion and friction is transferred
to
the fresh waler which circulates throughout the en-
gine. This circulating fresh
watsr
cools the engine block and its internal moving parts. The heat
is
transferred
externally from the Iresh water
to
sea water by means
of
a heat exchanger. similar in function
to
an automo-
tive radiator. Sea water flows through the tubes
01
the heat exchanger
While
fresh water flows around the
tubes; engine heat
transferred
to
fresh water is conducted through the
lube
walls
to
the sea water which is
pumped
into the exhaust system and discharged overboard.
In
basic terms, the engine is cooled
by
fresh
water,
the
fresh water is cooled
by
sea water, and the sea water carries the transferred heat over the side
through
the
exhaust system. The fresh water and sea water circuits are independent of each other. Using
only fresh water within
lhe
engine allows
lhe
cooiing water passages
to
stay clean and free from harmful
deposits. The
two
independent circuits and their components are discussed in the following paragraphs.
Fresh
Waler
Circuit
NOTE: Refer
to
paragraphs A and B
in
this section on the recommended antifreeze and water
mixture
to
be used as the fresh water coolant, and for information on filling the fresh water sys-
tem.
Fresh water is pumped through the engine
by
a belt-driven circulating pump, absorbing heat from the en-
gine. The fresh water coolant circulates through the engine's block absorbing heat, then passes through the
thermostat into the exhaust manifold, then
to
the heat exchanger where it is cooled, and then is returned
to
the engine
block
through the suction side of the fresh water circulating pump. When the engine is started
cold, external fresh water flow is prevented
by
the closed thermostat (although some fresh water flow is
bypassed around the thermostat
to
prevent the exhaust manifold from overheating).
As
the engine warms
up, the thermostat
gradually opens, allowing the engine's fresh water coolant
to
flow unrestricted
to
the ex-
ternal
portion of the cooling system.
A.
Fresh Water Coolant (Antifreeze) Mixture.
It
is recommended that a freshwater and antifreeze mixture be used year-round. Water, when
it
freezes, ex-
pands sufficiently
10
split the heat exchanger and crack the engine block. A waler/anti!reeze mixture
of
proper
concentration
will prevent freezing (see pege 50 for an antifreeze/water mixture chart).
Use
soft water with few impurities, such as tap water (potable water)
or
rainwater. Never use hard
or
foul
water. Use of hard water
or
waler containing Impurities will lead
to
the collection
of
scale in the engine and
heat
exchanger which will reduce the cooling system's efficiency.
Antifreeze
01
poor
quality
or
without rust inhibitors will cause corrosion within the cooling system. Always
use antUreeze
which is compatible with aluminum cooling system components and
which
is made
by
a reli-
able manufacturer. Never mix different brands
01
antifreeze.
Make sure that the
cooling system of the engine is well cleaned before adding antifreeze.
Recommended antifreeze
lor
year round use is ZEREX
or
PRESTONE with rust inhibitors.
In order
to
control the concentration
01
the mixture, mix the antifreeze and fresh water thoroughly before ad-
ding it
to
Ihe
cooling system.
Westerbeke
Generators
- WESTERBEKE 1
- Engines & Generators 2
- Generators 9
- Weslerbeke Generators 10
- F"",;"" 11
- Water Coolanl Fill 11
- TernperSI!U!'e Switch 11
- Waler Pump 11
- Conneclions 12
- GENERAL 13
- 45' 14
- Weslerlleke Generators 15
- BTG lUi 16
- SYSTEM SPECIFICATIONS 16
- 35 elm (1.0 cmm) 17
- - 35 psi 20
- Cn,r,ilnn 21
- 1800 rpm 21
- 130-150°1" 23
- 3.9 qls (3.7Iilers) 24
- ± 3 Hertz (5%) 25
- Westerbei<e Generators 26
- LIfTING 27
- Generator 28
- 61.5 to 29
- 62.0 cycles no-load 29
- SIJUDIV 31
- "",,"m' 31
- A boatyard 32
- :tMTRI<E 33
- ~---=~~~~~~ 34
- E~V~E~L 35
- ~_-::-=~:: 35
- ~::-=.::-:=-::C~ 35
- 3/8-112 36
- ~',j0t,"m 37
- A,,,,,in<" 39
- 5 minutes 40
- """,In,.· 41
- Gasoline 44
- FUELFllTER~ 45
- A new base gasket 46
- Westerbeke Generators 46
- ICNTTJ:ON 47
- '" 49
- !;~~~R6-: 50
- [J-----"':'0 51
- I:'~ 52
- COOUNG SYSTEM 53
- A stain 54
- REPLACE 55
- 1/2 inch 56
- (UMTlHJLlER 57
- Ene,i"" 58
- (C ) 58
- (80' 60
- 1(-\\\\ 61
- CONNEClEO 62
- 1201240 62
- * I- ! 63
- ~~---4~r-~~4-~ 64
- HtiUU'" 65
- "'" 66
- 'ilh 67
- (20" 68
- AHf-'S/PDtT) 68
- 011 the electric motor 69
- ,,,,,,,,,e 70
- + to the 71
- 46, lower left·hend corneL) 72
- STOP switch 75
- ,,,,,,inp 76
- (alem,rlllor) 80
- ""elinp' 81
- 0 front coveL 81
- ">"'" 82
- 1 and # 3 84
- (0.8 ± 0.05 mm) 85
- Waler Cooling 86
- Starter 87
- Weslerbeke 89
- T;~,;nn 90
- Vol'I",,?! 91
- "' 92
- ..... 65 92
- 15.0KVII 93
- Weslerbeke Generators 90 94
- Weslerbeke Generalors 96
- YOUR NOTES 100
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