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PART 2
Page 40
AC GENERATORS
SECTION 2.3
TROUBLESHOOTING FLOWCHARTS
GOOD
GOOD
REPAIR OR REPLACE
IF RECONFIGURED TO LP GAS,
VERIFY THAT PROPER
PROCEDURE WAS FOLLOWED
(REFER TO SECTION 1.3)
TEST 18 - CHECK
VOLTAGE AND
FREQUENCY
UNDER LOAD
TEST 19 - CHECK
FOR OVERLOAD
CONDITION
TEST 15 - CHECK AND
ADJUST ENGINE
GOVERNOR
GO TO “PROBLEM 18 -
ENGINE STARTS HARD
AND RUNS
ROUGH/LACKS POWER”
SECTION 4.3
TEST 20 - CHECK
ENGINE CONDITION
NOT
OVERLOADED
GOOD
ENGINE
CONDITION
GOOD
DISCONTINUE
TESTING
LOOK FOR A SHORTED
CONDITION IN A
CONNECTED LOAD OR
IN ONE OF THE LOAD
CIRCUITS
REDUCE LOADS TO UNIT’S
RATED CAPACITY
BAD
REPAIR OR REPLACE
OVERLOADED
Problem 4 - Voltage and Frequency Drop Excessively When Loads Are Applied
UNITS WITH
V-TWIN
ENGINES
UNITS WITH
SINGLE
CYLINDER
ENGINES
TEST 7 - CHECK
STATOR AC
POWER WINDINGS
BOTH
LOW
GOOD
GOOD
BAD
GOOD
REPLACE
TEST 8 - TEST
BRUSHLESS
STATOR
TEST 10 - TEST
DPE WINDING
BAD
BAD
GOOD
TEST 16 - CHECK
STEPPER MOTOR
CONTROL
8/10 kW UNITS
12-20 kW UNITS