Fault Finding - Ingersoll-Rand 7/26E Operation & Maintenance Manual

Operation & Maintenance Manual
An earth leakage circuit breaker provides additional protection in the event of a leakage to
earth in excess of 30 milliamperes on the connected appliance or in the connections to the
generator.
For alternator maintenance refer to Mecc Alte operation and maintenance manual.

Fault Finding

Fault
No output.
No output.
No output.
Generator fails to
provide maximum
output.
112
Cause
Load plugs not fitted into
socket outlets correctly.
Loose connection.
Faulty rectifier.
Faulty capacitor.
The No load voltage is
low but increases when a
load is applied.
The No load voltage falls
when a load is applied.
Loss of residual
magnetic field
Output winding(s)
damaged.
Field winding damaged.
Engine is not running at
full speed.
Drive belt is not
tensioned correctly.
Drive pulley is loose on
the drive shaft.
Remedy
Ensure that the load plugs are fitted
correctly into the socket outlets.
Remove end cover and terminal box lid and
check for loose connections. Rectify the
fault as necessary.
Check the rectifier bridge which is located
inside the rear housing.
Check the capacitors.
Check the capacitors and associated
wiring.
Check the capacitors and associated
wiring.
Refer to Mecc Alte maintenance manual
Measure the voltage across the winding(s).
Replace the generator if damaged.
Replace the generator.
Check the engine speed with a tachometer.
Consult Ingersoll Rand if the engine is
found to be running slow (Refer to "General
Information" section).
Re-tension the drive belt.
Check the drive pulley and tighten as
required.
Options
22221949