http://air.ingersollrand.com
OPeRATIOn AnD MAInTenAnCe MAnUAL
TROUBLe SHOOTInG
PROBLeM
CAUSe
ReMeDY
Compressor trips
due to over tem-
perature
Compressor operating above rated pres-
sure.
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 element leak.
Fit new Separator element.
Blocked separator element drain.
† Remove fittings and clean.
Compressor operating below rated pres-
sure.
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
Defective switch or incorrect pressure
switch setting.
Replace or set pressure to correct rating for
machine.
Minimum pressure valve malfunction.
† Fit Minimum pressure valve service kit.
Blowdown valve defective.
† Fit blowdown solenoid service kit.
Inlet valve malfunction.
† Fit inlet valve service kit.
Pressure relief valve defective.
Check the setting of the pressure relief valve
and the rated pressure.
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.
Safety valve blows
when compressor
goes on load
Minimum pressure valve stuck closed.
Strip minimum pressure valve, 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.
CAUTIOn
LOW DEMAND APPLICATIONS
During periods of low demand, the compressor may not reach its normal operating temperature Sustained
operation at low demand can result in the build up of condensate in the coolant. If this situation occurs, the
lubricating characteristics of the coolant can be impaired which may lead to damage of the compressor.
THE COMPRESSOR SHOULD BE ALLOWED AMPLE LOADED RUNNING TIME OF ATLEAST 10 MINUTES PER
HOUR DURING NORMAL DAILY USE.
