TP-6196 10/0932 Section 3 Troubleshooting
Troubleshoot in g Chart, continu ed
Problem ReferenceCorrective ActionPossible Cause
No output
voltage
AC output circuit breaker
open
Check for AC voltage on the generator side of circuit breaker. If
there is AC voltage on the generator side of the breaker, then a
problem i n the load circuits is causing the line circuit breaker to
trip. Check for and correct short circuits or overloading on the
load side before resetting the circuit breaker.
—
Alternator or control
system
Perform separate excitation procedure to isolate the problem to
the alt ernator or the control system. Then troubleshoot the
alternator or control system components as follows.
Section 6.2
Aux. winding fuse F1
blown.
Check fuse F1 and replace if blown. If fuse blows again, check
stator.
Section 6.3
SCR modul e Check auxiliary winding fuse F1.
Replace SCR module and test voltage.
Section 6.13
Section 6.8
Controller Check controller settings. Check wiring and connections.
Before replacing controller, replace SCR module and check
voltage.
Section 4.5 or .
Section 6.8
Open wiring, terminal, or
pin i n buildup circuit or
SCR modul e circuit
Check continui ty. Sections 6.13
Section 8
Brushes
Inspect brushes and replace if worn. Section 6.6
Check for brushes sticking in brush holder or broken brush
spring.
Section 6.6
Rotor connections Check for open circuit in rotor connection circuit (leads FN and
FP to SCR and RIB).
Section 8
Rotor slip rings dirty or
corroded
Check sli p ring condition. Section 6.4
Rotor (open, grounded,
or shorted windings)
Check volt age and c ontinuit y. Section 6.4
Stator (open, grounded,
or shorted windings)
Check volt age and c ontinuit y. Section 6.3
Flash relay (K3) on RIB
(ADC 2100)
Check fl ash LED on RIB.
Check fuse F2 and troubleshoot RIB.
Section 4.8
Flash relay (K3) on
controller board
(ADC-RES)
Check fuse F2.
Check flash LED1 on controller board. If LED1 indicates power
to K3 but relay does not operate, replace controller circuit board.
Section 5.7
Noisy
operation
Exhaust system leaks Check and replace as necessary. Section 2.6
Engine not running
smoothly
See Generator set operates erratically in this table. —
Broken or damaged
vibromount(s)
Check and replace as necessary. Section 7
Loose or vibrating sheet
metal/housing
Retighten screws, replace rivets.
—
Exhaust piping or air
inlets/outlets not
securely i nstall ed
Inspect f or loose parts and secure if necessary. Section 2.6
Excessive
engine/generator
vibration
Check, rotor, crankshaft, bearing, etc. (disassembly of engine
and/or alternator may be required).
Section 7
Engine S/M
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