D5-MANS
Mar ’19
- 30 -
Troubleshooting Guide
The ‘Conditions’, ‘Causes’, and ‘Suggested Corrections’ as indicated below and on the following page(s) are only
a guideline for troubleshooting that we have found to be most common.
Though this information is provided in this booklet, it is assumed and expected that any personnel involved in the
servicing of an Air Compressor Unit is knowledgeable with this type of equipment. Do not attempt to service a
Compressor Unit unless you are familiar with it, as there are many issues that may come into play, the most
important being personal safety and the welfare of the Unit.
Should you have any questions, or require servicing to your Unit, please contact your local Champion
Distributor/Service Center.
Condition:
Cause:
Suggested Correction:
A. Unit won’t start.
No power to the Unit.
Loose and/or missing wires in the electrical
circuit.
Motor Overload is tripped.
Compressor over-heated and stopped.
Unit shut off because pressure is not below
110 psi.
Automatic Idle Time stopped the Unit.
Power interruption.
Check that power at the disconnect or breaker is
on. Also, check primary and secondary fuses
inside the control box.
Check that all wiring connections are tight.
With a wiring schematic, check that all wiring is
present and correct.
Reset the overload inside the Control Panel.
Insufficient air flow to cool Unit.
Ambient temperature too high.
Heat Exchanger is dirty.
Faulty Temperature Switch.
Oil level is low.
Drop pressure below 110 psi.
Drop the pressure below 110 psi.
Reset the Unit.
When servicing the Air Compressor, shut off all
power to the Unit, and drain it of air pressure.
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