Trouble Shooting - Ingersoll-Rand UP5 4 Installation, Operation And Maintenance Manual

71113.13.16
PROBLEM
Compressor fails to start
Machine shuts down
periodically
High current draw
Low current draw
High discharge pressure
Low system air pressure
High dewpoint
Ice formation in dryer
80447113 Rev.A

TROUBLE SHOOTING

CAUSE
Mains power or Control voltage not
available .
Defective Star / Delta timer .
High airend temperature .
Motor overload .
Line voltage variation .
Compressor operating aboverated pressure .
Separator cartridge contaminated .
Low voltage .
Unbalanced voltage .
Damaged airend .
Air filter contaminated .
Compressor operating unloaded .
High voltage .
Defectiveinlet valve .
Defective or incorrect pressure switch
setting .
Blowdown valve defective .
Inlet valvemalfunction .
Separator cartridge contaminated .
Incorrect pressure transducer setting
Minimum pressure valvemalfunction .
Blowdown valve defective .
Drivebeltslipping .
Air system leaks .
Inlet valvemalfunction .
System demand exceeds compressor
delivery .
Compressed air filters contaminated .
Refrigeration compressor not supplied
power .
Condensate system malfunction .
Condenser dirty .
Low evaporator pressure .
§ Check incoming power supply .
§ Check the control circuit fuse .
§ Check the transformer secondary windings
for the controlvoltage .
§ 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 .
† Fixleaks .
† 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 panelfilter
element .
Check hot gas valve setting .
REMEdy
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