Ingersoll Rand UP5 4 Installation, Exploitation Et Maintenance page 16

71113.13.16
PROBLEM
Compressor trips due to over
temperature
Excessive coolant consumption
Excessive noise level
Shaft seal leaking
Pressure relief valve opens
Black residue on belt guard/
cooler box
Safety valve blows when
compressor goes on load
NOTE
§ Must be carried out by a competent electrician .
† This work is recommended to be carried out only by an Ingersoll Rand authorized service technician .
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 AT LEAST 10 MINUTES PER HOUR
dURING NORMAL dAILy USE .
1
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TROUBLE SHOOTING
CAUSE
Compressor operating above rated
pres-sure .
Package pre–filter blocked .
Cooler blocked .
Missing or incorrectly fitted enclosure
panels
Low coolant level .
High ambient temperature .
Restricted cooling air flow .
Separator element leak .
Blocked separator element drain .
Compressor operating below rated
pres-sure .
Coolant system leak .
Air system leaks .
Airend defective .
Belts Slipping .
Motor defective .
Loose components .
Defective shaft seal .
Defective switch or incorrect pressure
switch setting .
Minimum pressure valvemalfunction .
Blowdown valve defective .
Inlet valvemalfunction .
Pressure relief valve defective .
Drivebeltslipping .
Pulleys misaligned .
Worn pulleys .
Minimum pressure valve stuck closed .
Safety valve faulty
CAUTION
REMEdy
Set pressure to correct rating for machine .
Clean / replace package pre–filter .
Clean cooler .
Ensure that all enclosure panels are
correctly fitted .
Top up coolant and check for leaks .
Re–site compressor .
Ensure correct air flow to compressor .
Fit new Separator element .
† Remove fittings and clean .
Set pressure to correct rating for machine .
† Fixleaks .
† Fixleaks .
† Change Airend .
Replace belt and tensioner .
† Replace motor .
† Retighten loose items .
† Fit Airend shaft seal kit .
Replace or set pressure to correct rating for
machine .
† Fit Minimum pressure valve service kit .
† Fit blowdown solenoid service kit .
† Fit inlet valve service kit .
Check the setting of the pressure relief
valve and the rated pressure .
Replace belt and tensioner .
Re–align pulleys .
† Replace pulleys and belt .
Strip minimum pressure valve, examine
and repair if necessary .
Check the setting of the safety valve and
the rated pressure .
80447113 Rev.A