Section 5

TROUBLESHOOTING FLOWCHARTS

Problem 11 - Unit Overspeeds

TEST 1 - CHECK

NO-LOAD VOLTAGE

& FREQUENCY

NO

VOLTAGE

GO TO PROBLEM 2

PRODUCING

VOLTAGE

 

CHECK TO SEE IF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RED LED ON

 

 

ON

 

 

 

 

CIRCUIT BOARD IS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST 51 - CHECK

 

 

 

 

 

 

 

 

GOOD

 

 

 

WIRES 11S / 44S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST 5 - CHECK

 

 

 

REPLACE

GOOD

 

STEPPER MOTOR

 

 

CIRCUIT

 

 

OPERATION

 

 

 

BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BAD

 

 

 

 

 

 

 

 

 

 

 

 

BAD REPAIR OR REPLACE

Problem 12 - Idle Control “RPM Does Not Decrease”

VERIFY THAT

THERE IS NO LOAD

ON THE

GENERATOR

TEST 52 - CHECK

IDLE CONTROL

SWITCH

BAD

REPLACE

 

 

 

TEST 53 - CHECK

 

 

 

REPLACE PRINTED

 

 

GOOD

 

GOOD

 

 

IDLE CONTROL

 

 

 

 

 

 

CIRCUIT BOARD

 

 

 

WIRING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BAD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REPAIR OR REPLACE

 

 

 

Problem 13 - Idle Control “RPM Does Not Increase When Load Is Applied”

VERIFY THAT WIRE 11 & WIRE 44 ARE ROUTED THROUGH IDLE CONTROL TRANSFORMERS (ICT)

ROUTE THROUGH IDLE

CONTROL TRANSFORMERS

AND RE-TEST

GOOD

TEST 54 - CHECK

IDLE CONTROL

TRANSFORMERS

(ICT)

BAD

REPLACE

 

 

 

TEST 55 - CHECK

 

 

 

REPLACE

GOOD

 

 

 

 

 

 

GOOD

 

 

 

TR1 & TR2

 

 

PRINTED

 

 

 

 

 

 

WIRING

 

 

 

CIRCUIT BOARD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BAD

REPAIR OR REPLACE

Problem 14 - Engine “Hunts” / Erratic Idle

*Acceptable running limits for the engine are between 59-61 Hertz.

TEST 56 - CHOKE

TEST

NO

SURGING

TEST 39 - CHECK

CARBURETION

STILL

SURGING

TEST 40 - CHECK /

ADJUST VALVES

BAD

ADJUST / RE-TEST

GOOD

GOOD

TEST 29 - CHECK

SPARK

GOOD

TEST 30 - CHECK

SPARK PLUG

BAD - ENGINE MISS

APPARENT

TEST 35 - CHECK /

ADJUST IGNITION

MAGNETOS

REPLACE

 

 

 

TEST 5 - CHECK

PRINTED

 

GOOD

 

STEPPER MOTOR

 

 

CIRCUIT BOARD

 

 

 

OPERATION

 

 

 

 

 

 

 

 

REPAIR

OR BAD

REPLACE

BAD

REPLACE

BAD

ADJUST OR REPLACE

Page 36

Page 38
Image 38
Guardian Technologies 4583, 4582 & 4987, 5308 Problem 11 Unit Overspeeds, Problem 12 Idle Control RPM Does Not Decrease

5308, 4583, 4451 & 4986, 4582 & 4987 specifications

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