Guardian 4389 Repair Manual page 34

SECTION 2.3
TROUBLESHOOTING FLOWCHARTS
Problem 1 - Generator Produces Zero Voltage or Residual Voltage
TEST 10 -
TEST ROTOR
ASSEMBLY
GOOD
PERFORM ROTOR
INSULATION
RESISTANCE TEST -
SECTION 1.4
GOOD
TEST 7 - TEST
STATOR
GOOD
PERFORM STATOR
INSULATION
RESISTANCE TEST -
SECTION 1.4
GOOD
RE-TEST
TEST 4
Page 32
TEST 4 -
PERFORM FIXED
E
EXCITATION /
ROTOR AMP
DRAW
H
BAD
BAD
REPAIR
OR
REPLACE
BAD
BAD
(Continued)
F
RESISTANCE TEST -
PERFORM ROTOR
RESISTANCE TEST -
PART 2
AC GENERATORS
TEST 7 - TEST
BAD
STATOR
GOOD
PERFORM STATOR
INSULATION
BAD
SECTION 1.4
GOOD
TEST 10 -
BAD
TEST ROTOR
ASSEMBLY
GOOD
INSULATION BAD
SECTION 1.4
GOOD
RE-TEST
TEST 4
REPAIR
OR
REPLACE