11.0 FAULT FINDING
IRN37–160K–OF & IRN50–200H–OF
http://air.irco.com
85
SYMPTOM
FAULT
REMEDY
Discharge air is
contaminated with
condensate
Aftercooler not functioning
correctly
Clean or replace
condensate
Timed solenoids not set properly
for environment.
Adjust the timed solenoid Interval and/or duration
through the Operator Setpoints menu
Moisture separator drain lines
blocked.
Clean or replace
Compressor package
draws too much current
Compressor operating above
rated pressure
Check and modify settings. Review system
requirements and contact your local IR representative
Voltage supply is low or
unbalanced
Contact your local IR representative or a qualified
electrician
Airend is damaged
Contact your local IR representative
11.2 INTELLISYS FAULTS
(INDICATED ON THE INTELLISYS CONTROLLER)
FAULT
CAUSE
REMEDY
Emergency Stop
Emergency stop button has
been pressed.
Identify reason why, repair fault, disengage button
and reset Intellisys controller
Blower motor overload
Blower is blocked, damaged or
blower motor is faulty.
Remove blockage, repair or replace damaged
components
High airend discharge
temperature
Compressor operating above
rated pressure
Check and modify settings. Review system
requirements and contact your local IR representative
High ambient temperature
Review installation and system parameters
Insufficient cooling air
Check ducting and cooling air path.
Blocked cooler matrix
Clean or replace
Blower motor direction of rotation
incorrect
Wire correctly
Check setpoints
Controller software has been
changed
Recalibrate all sensors and check setpoints
