Trouble Shooting - Ingersoll-Rand SSR UP5-4 Operation And Maintenance Manual

PROBLEM CAUSE
Compressor fails to Mains power or Control voltage not available.
start
Defective Star / Delta timer.
Machine shuts down High airend temperature.
periodically periodically
Motor overload.
Line voltage variation.
High current draw Compressor operating above rated pressure.
Separator element contaminated
Low voltage.
Unbalanced voltage.
Damaged airend.
Low current draw Air filter contaminated.
Compressor operating unloaded.
High voltage.
Defective inlet valve.
High discharge Defective or incorrect pressure switch setting.
pressure pressure
Blowdown valve defective.
Inlet valve malfunction.
Low system air Separator element contaminated.
pressure
Incorrect pressure switch setting.
Minimum pressure valve malfunction.
Blowdown valve defective.
Drive belt slipping.
Air system leaks.
Inlet valve malfunction.
System demand exceeds compressor delivery.
Compressed air filters contaminated..
High dewpoint Refrigeration compressor not supplied power.
Condensate system malfunction.
Condenser dirty.
Ice formation in dryer Low evaporator 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.
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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.
§ 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 element.
§ 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 blowdown solenoid service kit.
† Fit inlet valve service kit.
Fit new Separator element.
Set pressure to correct rating for machine.
† Fit Minimum pressure valve service kit.
† Fit blowdown solenoid service kit.
Fit new belt.
† Fix leaks.
† Fit inlet valve service kit.
Reduce demand or install additional compressor.
Replace air filter elements.
Check incoming power supply.
Check the dryer protection fuse.
Check auxiliary contact on main motor contactor.
Check operation of drain valve.
Check operation of condensate check valves.
Clean condenser and replace panel filter element.
Check hot gas valve setting.
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