PART 2
AC GENERATORS
Page 46
Section 2.3
Troubleshooting Flow Charts
GOOD
REPAIR OR REPLACE
IF RECONFIGURED TO LP GAS,
VERIFY THAT PROPER
PROCEDURE WAS FOLLOWED
(REFER TO SECTION 1.3)
TEST 14 - CHECK
VOLTAGE AND
FREQUENCY
UNDER LOAD
TEST 15 - CHECK
FOR OVERLOAD
CONDITION
GO TO “PROBLEM 18 -
ENGINE STARTS HARD
AND RUNS
ROUGH/LACKS POWER”
SECTION 4.3
TEST 16 - 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 3 – Voltage and Frequency Drop Excessively When Loads Are Applied
TEST 7 - CHECK
STATOR AC
POWER WINDINGS
BOTH
LOW
GOOD
BAD
GOOD
TEST 12 - CHECK
STEPPER MOTOR
CONTROL
PROCEED TO PROBLEM 1
TEST 1 – CHECK
AC OUTPUT
VOLTAGE
ERRATIC
HIGH
OR
LOW
Problem 4 – Unstable Voltage or Incorrect Output Which is Not Triggering a Shutdown
TEST 3 -
CALIBRATE
VOLTAGE
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