ULTIMA COMPACT
Condensing Units
28
Condensers & Condensing Units
Installation & Maintenance : 6259675 IM V1.9.0 04/2016
-
Controls
ALARMS
The controller logs and allows viewing of the last 100 conditions recorded in descending
chronological order.
13/05/02
11:32
Event number
001
Alarm Active
37-Diff Pressr Evap
Alarm Handling
1
A
Red LED
behind the
Alarm
key will light in the event of an alarm. To view
the alarms, simply press the
key and the
keys to scroll through.
2
Auto reset alarms will clear following this first depression of the
Alarm
key. If
however the
Red LED
behind the
Alarm
key remains illuminated, the unit
requires some form of manual reset.
3
For manual reset alarms, isolate the affected circuits before further investigation.
4
To reset or delete the alarms displayed in the alarm screen, simply press
again.
COMMON ALARMS
Outlined below is a selection of Common Alarms, a full list is available, please
contact Airedale.
Phase Rotation
(Optional)
A normally closed contact. When Phase Rotation is incorrect all controller outputs are
de-activated.
Emergency Stop
A normally open contact. On closing, all controller outputs are de-activated.
INDIVIDUAL CIRCUIT
ALARMS
Outlined below is a selection of Individual Circuit Alarms, a full list is available, please
contact Airedale.
Low Suction Pressure
When the suction pressure sensor value falls below the value set by the low suction level
for a period exceeding 1 minute (or 3 minutes on compressor start-up), a visual alarm will
be generated at the in-built display and the relevant compressor will be de-activated. On
units with tandem compressors, both compressors from the same circuit will be
switched off.
High Liquid Pressure
When the liquid pressure reaches 25 BarG, the relevant circuit will be switched off and an
alarm activated, this can only be rectified by manual reset via the microprocessor.
Compressor Status
A normally closed contact when the compressor is operating. If this contact remains open
for a period of 3 seconds during operation of the compressor, a visual alarm is generated
and the relevant compressor will be de-activated. This alarm comprises of compressor
motor protection module, discharge gas thermostat and safety high pressure switch.
