80448418 Rev.C
TROUBLE SHOOTING
PROBLEM
CAUSE
REMEDY
Compressor trips due to over
temperature��
Compressor operating above rated
pressure��
Set pressure to correct rating for
machine��
Package pre–filter blocked��
Clean / replace package pre–filter��
Cooler blocked��
Clean cooler��
Missing or incorrectly fitted
enclosure panels��
Ensure that all enclosure panels are
correctly fitted��
Low coolant level��
Top up coolant and check for leaks��
High ambient temperature��
Re–site compressor��
Restricted cooling air flow��
Ensure correct air flow to compressor��
Excessive coolant consumption��
Separator cartridge leak��
Fit new separator cartridge��
Blocked separator cartridge drain��
† Remove fittings and clean��
Compressor operating below rated
pressure��
Set pressure to correct rating for
machine��
Coolant system leak��
† Fix leaks��
Excessive noise level��
Air system leaks��
† Fix leaks��
Airend defective��
† Change Airend��
Belts Slipping��
Replace belt and tensioner��
Motor defective��
† Replace motor��
Loose components��
† Retighten loose items��
Shaft seal leaking��
Defective shaft seal��
† Fit Airend shaft seal kit��
Pressure relief valve opens��
Pressure transducer faulty,
incorrectly calibrated or EMF
interference��
Recalibrate or replace��
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��
Inlet valve malfunction��
† Fit inlet valve service kit��
Black residue on belt guard/cooler
box��
Drive belt slipping��
Replace belt and tensioner��
Pulleys misaligned��
Re–align pulleys��
Worn pulleys��
† Replace pulleys and belt��
Gas strut failed��
Replace belt and tensioner��
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��
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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Summary of Contents for UP5S 11
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