Filter
Top Products
TROUBLE SHOOTING
47
SSR UP6 40, SSR UP6 50PE, SSR UP6 50PEI, HF50–PE, EP50–PE,
HP50–PE, HXP50–PE
PROBLEM CAUSE REMEDY
Compressor fails to
start
Mains power or Control voltage not available. § Check incoming power supply.
§ Check the control circuit fuse.
§ Check the transformer secondary windings for the
control voltage.
Defective Star / Delta timer. § Change Star / Delta timer.
Machine shuts down
periodically
High airend temperature. Top up coolant.
periodically
Motor overload. § Set overload to correct value and switch to manual
reset.
Belt stretch protection (when fitted). Change belt.
Line voltage variation. § Ensure voltage does not drop below 10% on start up
and 6% running.
High current draw Compressor operating above rated pressure. Set pressure to correct rating for machine.
Separator cartridge contaminated. Change air filter, and separator cartridge.
Low voltage. § Ensure voltage does not drop below 10% on start up
and 6% running.
Unbalanced voltage. Correct incoming supply voltage.
Damaged airend. † Change Airend.
Low current draw Air filter contaminated. Change air filter.
Compressor operating unloaded. Set pressure to correct rating for machine.
High voltage. Reduce site voltage to correct operating voltage.
Defective inlet valve. † Fit inlet valve service kit.
High discharge
pressure
Defective or incorrect pressure switch setting. Replace or set pressure to correct rating for machine.
pressure
Load solenoid valve defective. † Fit load solenoid service kit.
Blowdown valve defective. † Fit blowdown solenoid service kit.
Inlet valve malfunction. † Fit inlet valve service kit.
Low system air
pressure
Separator cartridge contaminated. Fit new Separator cartridge.
pressure
Incorrect pressure switch setting. Set pressure to correct rating for machine.
Minimum pressure valve malfunction. † Fit Minimum pressure valve service kit.
Load solenoid valve defective. † Fit load solenoid service kit.
Blowdown valve defective. † Fit blowdown solenoid service kit.
Drive belt slipping. Fit new belt and tensioner.
Air system leaks. † Fix leaks.
Inlet valve malfunction. † Fit inlet valve service kit.
System demand exceeds compressor delivery. Reduce demand or install additional compressor.
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.
Safety valve blows
when compressor goes
on load.
MPV STUCK CLOSED. Strip MPV, examine and repair if necessary.
SAFETY VALVE FAULTY
Check the setting of the safety valve and the
rated pressure.
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