Guardian 5240 - Problem 4 - Voltage and Frequency Drop Excessively When Loads Are Applied; Excessively When Loads Are Applied

PART 2
Page 38
AC GENERATORS
SECTION 2.3
TROUBLESHOOTING FLOWCHARTS
REPAIR OR REPLACE
BAD BADBAD
GOODGOOD
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 79 - CHECK
IDLE CONTROL
TRANSFORMER
TEST 80 - CHECK
LC1 & LC2 WIRING
TEST 81 - CHECK
IDLE CONTROL
TRANSFORMER
PRIMARY WIRING
TEST 15 - CHECK
FOR OVERLAOD
CONDITION
TEST 12 - CHECK AND
ADJUST ENGINE
GOVERNOR
GO TO “PROBLEM 11 - ENGINE
STARTS HARD AND RUNS
ROUGH/LACKS POWER”
SECTION 4.3
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
REPAIR OR REPLACE
THE IDLE CONTROL
TRANSFORMER
REPAIR OR REPLACE
DEFECTIVE WIRING
REPAIR OR REPLACE
DEFECTIVE WIRING
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
S TATO R AC
POWER WINDINGS
BOTH
LOW
GOOD
GOOD
GOOD
BAD
GOOD
TEST 12A - CHECK
STEPPER MOTOR
CONTROL