9.0 OPERATING INSTRUCTIONS
IRN37–160K–CC & IRN50–200H–CC & IRN75–160K–2S & IRN100–200H–2S
64
9.12 WARNINGS
When a WARNING occurs, a large question mark will
flash on the display screen.
If multiple WARNINGS exist, the small up/down arrows
will appear in the upper right corner of the display
screen. The multiple WARNINGS can be seen by
pressing the up and down arrow buttons. Pressing the
STATUS button will display the CURRENT STATUS
screen with the WARNING button indicating that a
WARNING still exists.
A WARNING will not cause the unit to shut down. The
unit will continue to run in its normal operation and the
WARNING will remain displayed until reset.
A Warning needs to be reset by the operator by
pressing the RESET button twice.
The possible Warning messages are as follows;
HIGH AIREND DISCHARGE TEMP – This will occur if the
Airend Discharge exceeds 97% of the alarm limit,
109
_
C (228
_
F) and is not adjustable.
CHANGE COOLANT FILTER – This warning will occur
if the high side pressure is 1.4 bar (20 psig) greater than
the low side pressure.
CHANGE INLET FILTER – This will occur if the Inlet
Vacuum is greater than 0.05 bar (0.7 psig).
CHANGE SEPR ELEMENT – This will occur if the
pressure differential across the separator is 1.0 bar (12
psig).
SENSOR FAILURE – This will occur if a sensor is
recognized as missing or broken.
HIGH DISCHARGE PRESS – Will occur if the unit is
under the control of an external device, such as an ISC,
and the discharge pressure is greater than the
immediate stop pressure.
AUXILIARY WARNING 1 or 2 – Will occur if the
auxiliary warning input closes.
REMOTE PRESSURE SENSOR FAILURE (option) –
This will occur if the remote pressure sensor fails. If this
happens, the lntellisys will start using the package
discharge pressure sensor to measure system
pressure.
CONDENSATE DRAIN ERROR – On 2 stage units,
this will occur if the condensate drain error contacts
close while the unit is running.
9.13 SERVICE WARNINGS
SERVICE – Service warnings occur when the unit has
operated a certain number of hours, based on the total
hours, or has operated for a certain number of months,
based on the real time clock. Service warnings can
have multiple levels, depending on the service level
selection.
This will be set prior to the compressor being shipped
from the factory. When a service warning occurs,
contact your local IR service representative.
9.14 INITIAL CHECK ALARMS:
The following alarms will only occur when the machine
is not running. These alarms are related to high
temperature, power loss, and sensor calibration. They
will have the same display mode as other alarms.
HIGH AIREND DISCH TEMP– Will occur if airend
discharge temperature is greater than 95% of 109
_
C
(228
_
F).
CHECK SETPOINTS – Will occur if the controller has
determined that some of the data stored in memory
contains unacceptable values.
INVALID CALIBRATION – Will occur if the sensor zero
value is –10% to +1% of its scale. See Sensor
Calibration.