Guardian Technologies 4582 & 4987 Manual De Usuario

Page 47

2. If  load  is  within  limits,  but  frequency  and  voltage  still  drop

excessively, refer back to Flow Chart.

PROCEDURE:
1. Disconnect Wire 15 (center terminal) from the Battery Charge

Rectifier  2  (BCR2),  which  is  located  under  BCR1. They  are
stacked. See Page 17 for BCR2 location.

66A

15

BCR2

77A

15

2. Set a voltmeter to measure DC Amps. Connect the positive (+)

test lead to the center terminal of the Battery Charge Rectifier.
Connect the negative (-) test lead to Wire 15 previously discon-
nected.

3. Start the generator. The amp reading on the voltmeter should

be  approximately  0.6  Amps.  Apply  full  load  to  the  generator.
The amp reading should increase to approximately 2 Amps.

RESULTS:
1. If amperage was measured between 0.6 to 2 Amps in Step 2

and Step 3, the charging system is working.

2. If no amperage was measured, check the voltmeter fuses and

verify  the  functioning  of  the  Amp  Meter.  If  DC  Amp  Meter  is
good and no current is measured refer to flow chart.

PROCEDURE:
NOTE: The battery charge cable must be connect-

a separate battery to perform this test. 
1. Disconnect Wire 13A (center terminal) from the Battery Charge

Rectifier 1 (BCR1), which is located on top of BCR2 they are
stacked. See Page 17 for BCR1 location.

2. Set a voltmeter to measure DC Amperage. Connect the posi-

tive (+) test lead to the center terminal of the Battery Charge
Rectifier. Connect the negative (-) test lead to Wire 13A previ-
ously disconnected. See Figure 6-24.

66

BCR1

77

13A

3. Start the generator. The amp reading on the voltmeter should

be  approximately  0.2  Amps.  Apply  full  load  to  the  generator.
The amp reading should increase. It will depend upon the state
of charge of the battery as to how high current will get. Normal
ranges at full load can be 3-7 amps, but can get as high as 10
amps.

RESULTS:
1. If amperage was measured between 0.2 to 10 Amps in Step 2

and Step 3, the charging system is working.

2. If no amperage was measured, check the voltmeter fuses and

verify  the  functioning  of  the  Amp  Meter.  If  DC  Amp  Meter  is
good and no current is measured refer to flow chart.

PROCEDURE:
1. Disconnect all wires from the Battery Charge Rectifier.

2. Set the VOM to the Diode Test range. Connect the negative (-)

test lead to the center terminal of the BCR. Connect the posi-
tive (+) test lead to an outer terminal. The meter should mea-
sure approximately 0.5 volts. Now connect the positive test lead
to  the  other  outer  terminal.  Again,  the  meter  should  measure
approximately 0.5 volts.

3. Connect the positive (+) test lead to the center terminal of the BCR.

Connect the negative (-) test lead to an outer terminal. The meter
should measure INFINITY. Connect the negative test lead to the
other outer terminal. INFINITY should once again be measured.