Trouble Shooting - Ingersoll-Rand UP6 15 Operation And Maintenance Manual

PROBLEM
Compressor fails to
start
Machine shutsdown
periodically periodically
High current draw
Low current draw
High discharge
pressure pressure
Low system air
pressure pressure
NOTES:
§ Must be carried out by a competent electrician.
† This work is recommended to be carried out only by an Ingersoll Rand authorized service technician.
CAUSE
Mains power or Control voltage not available.
Defective Star / Delta timer.
High airend temperature.
Motor overload.
Belt stretch protection (when fitted).
Line voltage variation.
Compressor operating above rated pressure.
Separator cartridge contaminated.
Low voltage.
Unbalanced voltage.
Damaged airend.
Air filter contaminated.
Compressor operating unloaded.
High voltage.
Defective inlet valve.
Defective or incorrect pressure switch setting.
Load solenoid valve defective.
Blowdown valve defective.
Inlet valve malfunction.
Separator cartridge contaminated.
Incorrect pressure switch setting.
Minimum pressure valve malfunction.
Load solenoid valve defective.
Blowdown valve defective.
Drive belt slipping.
Air system leaks.
Inlet valve malfunction.
System demand exceeds compressor delivery.

TROUBLE SHOOTING

REMEDY
§ Check incoming power supply.
§ Check the control circuit fuse.
§ Check the transformer secondary windings for the
control voltage.
§ Change Star / Delta timer.
Top up coolant.
§ Set overload to correct value and switch to manual
reset.
Change belt.
§ Ensure voltage does not drop below 10% on start up
and 6% running.
Set pressure to correct rating for machine.
Change air filter, and separator cartridge.
§ Ensure voltage does not drop below 10% on start up
and 6% running.
Correct incoming supply voltage.
† Change Airend.
Change air filter.
Set pressure to correct rating for machine.
Reduce site voltage to correct operating voltage.
† Fit inlet valve service kit.
Replace or set pressure to correct rating for machine.
† Fit load solenoid service kit.
† Fit blowdown solenoid service kit.
† Fit inlet valve service kit.
Fit new Separator cartridge.
Set pressure to correct rating for machine.
† Fit Minimum pressure valve service kit.
† Fit load solenoid service kit.
† Fit blowdown solenoid service kit.
Fit new belt and tensioner.
† Fix leaks.
† Fit inlet valve service kit.
Reduce demand or install additional compressor.
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