R90 - 160N / R90 - 160I / R90 - 160NE / R90 - 160IE
http://www.ingersollrandproducts.com
10
11.0 FAULT FINDING
SYMPTOM
FAULT
REMEDY
Discharge air is contaminated
with condensate
Aftercooler not functioning correctly
Clean or replace
Moisture separator drain trap faulty
Overhaul or replace
Continuous low speed / low ambient
operation causing condensate build
up
Review system requirements and
contact your local
Ingersoll Rand
representative
Compressor package draws too
much current
Compressor operating above rated
pressure
Check and modify settings. Review
system requirements and contact your
local
Ingersoll Rand
representative
Separator filter element dirty or
blocked
Replace
Voltage supply is low or unbalanced
Contact your local
Ingersoll Rand
representative or a qualified electrician
Airend is damaged
Contact your local
Ingersoll Rand
representative
Excessive coolant consumption
Coolant system leak
Overhaul or replace
See also ‘discharge air is contaminated
with coolant’
See above
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
Ingersoll Rand
representative
Low coolant level
Check for leaks. See also ‘discharge air is
contaminated with coolant’. Top up coolant.
High ambient temperature
Review installation and system parameters
Insufficient cooling air
Check ducting and cooling air path.
Dirty, blocked coolant cooler
(cooling air side)
Clean or replace
Blower motor direction of
rotation incorrect
Wire correctly
Check setpoints
Controller software has been
changed
Recalibrate all sensors and check setpoints
