Guardian 4389 Repair Manual page 35

AC GENERATORS
Problem 2 - Generator Produces Low Voltage at No-Load
TEST 2 - CHECK
AC OUTPUT
LOW
VOL TAGE
TEST 13- ADJUST
VOL TAGE
REGULA TOR
FREQUENCY O.K.,
BUT VOLT AGE IS
STILL LOW
Problem 3 - Generator Produces High Voltage at No-Load
TEST 2 - CHECK
AC OUTPUT
HIGH
VOLTAGE
VOLTAGE AND
FREQUENCY O.K.
DISCONTINUE TESTING
PART 2
TEST 11 - CHECK
AC OUTPUT
FREQUENCY
FREQUENCY O.K.,
BUT VOLT AGE LOW
VOL TAGE AND FREQUENCY O.K.
GO TO "PROBLEM 1"
FLOW CHART - START
AT "TEST 4"
TEST 11 - CHECK
AC OUTPUT
FREQUENCY
FREQUENCY O.K.,
BUT VOLTAGE HIGH
TEST 13- ADJUST
VOLTAGE
REGULATOR
FREQUENCY O.K.,
BUT VOLTAGE IS
STILL HIGH
TROUBLESHOOTING FLOWCHARTS
TEST 12 - ADJUST
LOW
ENGINE GOVERNOR
TEST 12 - CHECK
HIGH
ENGINE GOVERNOR
FREQUENCY AND
VOLTAGE O.K.
DISCONTINUE TESTING
REPLACE DEFECTIVE
VOLTAGE REGULATOR
SECTION 2.3
FREQUENCY AND
VOL TAGE O.K.
STOP TESTS
FREQUENCY O.K.,
BUT VOLTAGE HIGH
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