Westerbeke 4.0Kw BCDB 50Hz Manual de instalación descargar pdf (Pagina 41)

Be

GENERATOR

SINGLE

PHASE

NOTE:

WESTERBEKE recommends that the following generator tests

and adjustments be performed

by

a qualified

technician.

INTEGRAL

CONTROLLER

(I.C.)

Testing

the

Battery

Charging

Circuit

The Integral Controller (I.C)

is

an

encapsulated, solid-state

unit that supplies a

DC

charging voltage

to

the generator's

starting battery while the generator

is

opening.

Charging Voltage: 13.0 - 14.0 volts DC

Charging Amperage: 0 - 10- amps DC

A separate group

of

stator windings supplies AC voltage

to

a

bridge rectifier which converts the

AC

current

to

supply

the

I.C

unit. The

I.C

unit senses the needs of the starting battery

and

supplies a DC charge when

one

is needed. If

you

suspect .

that

the

I.e.

unit is faulty (that is, if

the

battery's charge

is

low), check

the

charging circuit

and

it's components

as

described

in

the following steps. Check

all

connections for

cleanliness

and

tightness including the ground before replac-

ing the

I.C

unit.

NOTE:

When

the

generator

is

first

started,

the

I.C

unit will

produce a low charging

rate.

This

charging rate will

rise

as

the generator

is

operated.

The Integral Controller is mounted inside the generator hous-

ing

in

the 12:00 position. There

is

a voltage output adjust-

ment

on

the controller that will allow a DC voltage output

adjustment

of

± 2 volts.

+

GND

BLACK

VOLTAGE

OUTPUT

ADJUSTMENT

(ON

BACK)

YELLOW

GROUND

TO

GENERATOR

CASE

AC

BRIDGE

RECTIFIER

1.

Bridge Rectifier

Normal AC voltage running

to

the rectifier (while the

engine

is

operating

at

1800

rpm)

is

measured

across the

two

AC

connections

on

the

bridge

rectifier.

(As

illustrated).

AC voltage running

to

the

bridge rectifier (approximate):

No-load off the generator 16.0 volts AC

Full-load off the generator 17.5 volts AC

Normal DC voltage running but

of

the

rectifier

(in

volts

DC) is measured across

the

two

DC connections

of

the

bridge rectifier; that

is

+

and

-.

DC voltage running

from

the bridge rectifier

(approximate):

No-load

off

the generator

Full-load off the generator

2.

AC

winding: 0.14 ohm

17.0 volts DC

18.5 volts DC

Lift

the

two

AC wire leads off the bridge rectifier

and

measure,

the

resistance between these

two

leads

with

an

ohmmeter.

It

should measure 0.14 ohm.

No

continuity

should exist between these two leads

and

the

ground

or

the

main

AC stator windings.

3. Testing the Bridge Rectifier (meter

used

- Simpson 260)

A Set your ohmmeter's scale

on

RX1

(+

DC)

and set the

needle

to

zero.

B. Connect the (+) positive lead

from

the

ohmmeter

to

point #4. Taking

the

ohmmeter's negative (-)

lead,

momentarily touch points #1, #2, #3,

and

#5.

The ohm-

meter should register

no

deflection

for

any

of

the

points touched.

C. Remove the positive

(+)

lead

from

point

#4

and

connect the negative (-) lead; momentarily touch

'points

#1,

#2,

and

#3.

The ohmmeter's needle should

deflect

when

each

point is touched.

D.

Leaving the negative ohmmeter

(-)

lead

on

point #4,

touch point #5

with

the

positive

lead.

No

deflection

should take place.

E. Place

.the

positive

(+)

lead

on point

#1

and

the

negative

(-)

lead

on

point

#3.

The ohmmeter

again

should

not

register

any

deflection'(no deflection indicated infinite

resistance). Reverse these connections

and

the

ohmme-

ter should again register

no

deflection. If

the

rectifier

fails any of

the

previous tests (A-E), replace the recti-

fier

because it

is

defective.

NOTE:

l)ifferent types

and/or

brands

of

test

meters

may

produce opposite test

results.

POINT

i/4

POINT

#5

MOUNTING

HOLE

Engines & Generators

BRIDGE

RECTIFIER

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