Westerbeke M-50B Installationshandbuch PDF herunterladen (Seite 28)

ELECTRICAL

SYSTEM

DESCRIPTION

The charging system consists

an alternator with a mounted

voltage regulator,

engine DC wiring harness, a mounted

circuit breaker, and a battery and connection wires.

Because

the use

integrated circuits (lC's)

the

electronic

voltage regulator

very compact and is mounted internally

or on the

back

the

alternator.

Alternator

Troubleshooting

you

suspect that the alternator is not producing enough

voltage

to charge

the

engine's battery, check

the

following:

WARNING:

A failtld

IJItBIJIatDr

can

be_

VfIfY

IirIt.

110

/lilt

trnu:II

untilllltl

aItemator

has

cooled

down.

o Make certain your alternator is securely mounted.

o Check the drive belts for proper tension.

Inspect

for loose or disconnected wires

the

alternator .

.rE:

isolotor

with

a diode, a solenoid,

a banery

stlector switch is usually mounted

the circuit to isolate the

boIteries

the

sIDrting

battery is not discharged along

with

tire

house batteries.

tire

isolotor is charging the starting

battery

but

not

the hause battery, the alternator is

and

tire

probkm

is in the battery charging circuit

WARNING:

ShIIt

off

IIItI

engine

battery

swltt:h

ur:tt"""

IIItI

battery

when

WlHfring

the

engine

,"cfJtat

SJISfIm.

Cllacldll far

Proper

Voltage

you

suspect the alternator has failed perform the following

tests

with the engine off:

Using a voltmeter, connect the voltmeter

red

wire clip

the output terminal

B+.

2. Connect the volbneter negative wire

any

ground

the

engine.

3. Check the battery voltage.

should read

volts.

Check

the

voltage between the alternator

(+)

positive ter-

minaI

B and

any

engine ground.

the

circuit is good,

the

voltage at the alternator should be

the

same as the battery

(unless

there's

isolator in the circuit, then the reading

would

be zero).

CAUTION:

arrIId

damage

tIHJ

battery

t:hBlging

dn:tIIt,

- sIuIt

off

IIItI

engine

battery

switch

when

fair

....

I'IIIIIIlng!

WARNING:

Before

stattlng

the

engine

make

cettain

that

everyone

clear

moving

paris!

Keep

away

from

sheallBS

and

belts

during

test

procedures.

5. Start

the

engine.

6. The voltage reading for a properly operating alternator

should

between 13.5 and 14.5 volts.

your alternator

is over- or undercharging, have it repaired at a reliable

service shop.

NOTE:

Before removing the alternator for

repair,

use

your

voltmeter

ensure that 12 volts

excitation

present at

the R terminal if the previous test showed only battery

volt-

age at

the

B output terminal.

'14

PINK/BlUE

.14

'RO"N==9"'«~--

'10

RED

=~=Ii~

TYPICAL

UNIVERSAL

AMP

ALTERNATOR

CONNECTIONS

R""'I:\J[li!§

'14

PINKIBLUE

'14

BROWN

OPTIONAL

AMP

ALTERNATOR

CONNECTIONS

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 56 57

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