Generac Power Systems 7 kW NG User Manual

PART 2
AC GENERATORS
Page 44
Section 2.3
Troubleshooting Flow Charts
INTRODUCTION
Use the “Flow Charts” in conjunction with the detailed instructions in Section 2.4. Test numbers used in the flow charts correspond
to the numbered tests in Section 2.4. The first step in using the flow charts is to identify the correct problem on the following pages.
For best results, perform all tests in the exact sequence shown in the flow charts.
GOOD
REPLACE HARNESS
REPAIR
OR
REPLACE
REPLACE
ROTOR ONLY
REPLACE
STATOR
ONLY
REPLACE
ROTOR AND
STATOR
REPAIR
OR
REPLACE
TEST 4 – PERFORM
FIXED EXCITATION /
ROTOR AMP DRAW
PERFORM STATOR
INSULATION
RESISTANCE TEST
SECTION 1.5
PERFORM ROTOR
INSULATION
RESISTANCE TEST
SECTION 1.5
TEST 5 – TEST
SENSING CIRCUIT
WIRES 11 AND 44
TEST 7 – TEST
STATOR
TEST 7 – TEST
STATOR
TEST 8 –
RESISTANCE
CHECK OF
ROTOR CIRCUIT
CHECK
VOM
FUSES
TEST 10 –
TEST ROTOR
ASSEMBLY
REPAIR
OR REPLACE
FUSES
RE-TEST
BAD
BAD
BAD
BAD
BAD
BAD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
GOOD
Problem 1 – Generator Shuts Down for Under Voltage
D
G
A
C
B
REPLACE
CONTROLLER
TEST 6 – TEST
EXCITATION
WINDING CIRCUIT
2 AND 6
ROTOR CIRCUIT
FAILURE
FIELD BOOST
CIRCUIT FAILURE
TEST 9 –
CHECK
BRUSHES &
SLIP RINGS
BAD
REPLACE
ROTOR AND
STATOR
BAD
TEST 10 –
TEST ROTOR
ASSEMBLY

Generac Power Systems 7 kW NG Specifications

General

Brand	Generac Power Systems
Model	7 kW NG
Category	Portable Generator
Language	English