11.0 FAULT FINDING
IRN37–160K–OF & IRN50–200H–OF
http://air.irco.com
84
SYMPTOM
FAULT
REMEDY
Pressure produced by
compressor is too high
Intellisys set incorrectly
Check and modify settings
compressor is too high
due to speed not
reducing as demand
reduces
Pressure transducer may be
faulty, incorrectly calibrated or
not receiving pressure signal
Recalibrate or replace
reduces
Drive settings fault
Contact your local IR representative
Compressor discharge
air too hot
High ambient temperature
Review installation and system parameters
air too hot
Insufficient cooling air
Check ducting and cooling air path, check direction of
blower rotation
Blocked aftercooler matrix
Clean or replace
Compressor package
produces excessive
noise
Panels or doors are not closed
properly
Rectify fault
noise
Air leaks from internal pipework /
components
Overhaul or replace
Blower or blower motor bearings
worn
Overhaul or replace
Loose debris impacting on
blower during rotation
Remove and rectify any damage
Blowdown valve stuck open
Overhaul or replace
Pressure relief valve not seating
correctly
Overhaul or replace
Vibration due to motor, airend or
blower imbalance
Overhaul or replace
Airend requires overhaul
Contact your local IR representative
