Westerbeke 20.0KW sbeg Specifications Page 23
- Page / 61
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
COOLING
SYSTEM
DESCRIPTION
Westerbeke marine engines are designed and equipped for
fresh water cooling. Heat produced in the engine by combus-
tion and friction is transferred to fresh water coolant which
circulates throughout the engine. This circulating fresh water
coolant cools the engine block, its internal moving parts and
the engine oil. The heat is transferred externally from the
fresh water coolant to raw water by means
of
a heat
exchanger,
similar
in
function
to
an
automotive
radiator.
Raw
water flows through the tubes
of
the heat exchanger while
fresh water coolant flows around the tubes; engine heat
transferred to the fresh water coolant is conducted through
the tube walls to the raw water which is then pumped into
the exhaust system where finally it is discharged overboard.
In other words, the engine is cooled by fresh water coolant,
this coolant is cooled
by
raw water, and the raw water carries
the transferred heat overboard through the exhaust system.
The fresh water coolant and raw water circuits are
independent
of
each other. Using only fresh water coolant
within the engine allows the cooling water passages to stay
clean and free from hannful deposits.
FRESH
WATER
CIRCUIT
NOTE:
Refer
to
ENGINE COOLANT section
for
the recom-
mended antifreeze
and
water mixture to be used as the fresh
water coolant.
Fresh water coolant is pumped through the engine
by
a
circulating pump, absorbing heat from the engine. The
coolant then passes through the thermostat into the manifold,
to the heat exchanger where it is cooled and returned to the
engine block via the suction side
of
the circulating pump.
When the engine is started cold, external coolant flow is
prevented by the closed thermostat (although some coolant
flow is bypassed around the thermostat to prevent the exhaust
manifold from overheating). As the engine warms up, the
thermostat gradually opens, allowing full flow
of
the engine's
coolant to flow unrestricted to the external portion
of
the
cooling system.
Coolant
Recovery
Tank
The coolant recovery tank allows for engine coolant
expansion
and
contraction
during
engine
operation.
without
the introduction
of
air into the cooling system. This tank
should
be
located at
or
above the engine manifold level and
should
be
easily accessible.
NOTE:
Periodically check the condition
of
the manifold
pressure cap,
its
rubber seals and
the
vacuum
return
valve.
Ensure the passage from the filler neck to the recovery tank
connection
is
kept
clear.
CHANGING
COOLANT
The engine's coolant must be changed according to the
MAINTENANCE SCHEDULE.
If
the coolant is allowed
to
become contaminated, it can lead to overheating problems.
A
CAUTION:
Proper
cooling
system
maintenance
is
critical;
a
substantial
number
of
engine
failures
can
be
traced
back
to
cooling
system
corrosion.
Drain the engine coolant by loosening the drain plug on the
engine block and opening the manifold pressure cap. Flush
the system with fresh water, then start the refill process.
NOTE:
The drain plug on the heat exchanger can also be used
to
drain
engine
coolant.
A
WARNING:
Beware
of
the
hot
engine
coolant.
Wear
protective
gloves.
Refilling
the
Coolant
After replacing the engine block drain plug, close the heat
exchanger's coolant petcock. Then run the engine at idle and
slowly pour clean, premixed coolant into the manifold.
NOTE:
Open the air-bleed petcock on the heat exchanger.
When a steady flow
of
coolant appears
at
the petcock, close
the petcock
and
fill the
SY$tem
until the manifold remains jull.
Monitor the coolant in the manifold and add as needed. Fill
the manifold to the filler neck and install the manifold pres-
sure
cap.
Remove the cap on the coolant recovery tank and fill with
coolant mix to halfWay between
LOW
and
MAX
and replace
the cap. Run the engine and observe the coolant expansion
flow into the recovery tank.
After checking for leaks, stop the engine and allow it to cool.
Coolant should draw back into the cooling system as the
engine cools down. Add coolant to the recovery tank
if
needed. Clean up any spilled coolant.
TO
COOLANT
RECOVERY
COOLANT
EXPANSION
PRESSURE
CAP
/
COOLANT
RETRACTION
Engines & Generators
12
- OPERATORS 1
- Engines & Generators 2
- WARNING 3
- CALIFORNIA 3
- PROPOSITION 3
- MONOXIDE 7
- "CO" 7
- ISAFE-CO 7
- GENERATORS 7
- "CO"/SAFE-CO 8
- EMISSIONS 9
- INSTALLATION 10
- CONTENTS 12
- SBEG/22.5KW 13
- IDENTIFICATION 13
- INTRODUCTION 14
- WESTERBEKE 16
- START-UP 17
- PREPARATIONS 17
- INITIAL 17
- OPERATING 18
- INSTRUCTIONS 18
- BREAK-IN 19
- PROCEDURE/THE 19
- OPERATION 19
- SHUTDOWN 20
- SENSORS 20
- SWITCHES 20
- MAINTENANCE 21
- SCHEDULE 21
- EXJIi~UST 22
- COOLING 23
- WI;SHER~~~~~ 25
- InsIrut:l/tm$ 27
- 1i~::::::= 28
- LUBRICATING 29
- ."'LII' 29
- PRESSURE 30
- OPTIONAL 31
- DISASSEMBLY 32
- /INSPECTION 32
- ADJUSTMENTS 34
- ~~~rO.0·12(0.30mm) 36
- GENERATOR 37
- INFORMATION 37
- Generator 37
- Maintenance 37
- ~' 39
- '~ 39
- POTENTIOMEtERS 40
- DELTA"~ 41
- VOLTAGE 42
- CONNECTIONS 42
- TROUBLESHOOTING 43
- REGULATOR 44
- "} 45
- ~" 46
- ·:·:::~l@· 46
- START/STOP 48
- ELECTRICAL 51
- RECOMMISSIONING 53
- & Generators 55
- (M"KG) 57
- STANDARD 58
- CONVERSION 58
- CONVERSIONS 59
- CAP~iP' 60
- (508) 884-9688 • Website: 61
Related products and manuals for Power generators Westerbeke 20.0KW sbeg
(16 pages)
(4 pages)© 2020, manymanuals.com. All rights reserved. | 1.048 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals