Residual Voltage (5-12 Vac) - Guardian 4700 Repair Manual

Section 6
TROUBLESHOOTING FLOWCHARTS
Problem 2 - Generator Produces Zero Voltage or Residual Voltage (5-12 VAC)
TEST 12 - CHECK
MAIN CIRCUIT
BREAKER
RESET TO
"ON"
OR REPLACE
IF BAD
TEST 5 - WIRE
CONTINUITY
BAD
GOOD
TEST 6 -
FIELD BOOST
BAD
REPAIR
OR
REPLACE
THEN
RETEST
GOOD
REPLACE
VOLTAGE
REGULATOR
Page 22
TEST 3 - TEST
EXCITATION
CIRCUIT BREAKER
TEST 4 -
PERFORM FIXED
EXCITATION /
A
ROTOR AMP
DRAW
B
C
TEST 7 - TEST
STATOR DPE
WINDING
GOOD
INSULATION
RESISTANCE
TEST PAGE 11
TEST 8 - CHECK
BAD
SENSING LEADS /
POWER WINDINGS
GOOD
INSULATION
RESISTANCE
BAD
TEST PAGE 11
GOOD -PROCEED
BAD -PROCEED, REPLACE AFTER TESTS
CONCLUDE
D
BAD
REPAIR
OR
REPLACE
BAD
REPAIR
OR
REPLACE
TEST 9 -
CHECK
BAD
BRUSH
LEADS
GOOD
TEST 10 -
CHECK
BAD
BRUSHES &
SLIP RINGS
REPAIR
GOOD
REPLACE
TEST 11 -
BAD
CHECK ROTOR
ASSEMBLY
GOOD
INSULATION
RESISTANCE
BAD
TEST PAGE 11
OR