Model ULC Series
06012021ULC,Rev i
Page 45 of 54
Light Tower – Located between the doors
Alarms
System A System B
Light
Tower
Displays
Settable
Range
Power Fail
V/C
V/C
-
-
-
Temperature High Alarm
A/V/C
A/V/C
Red
Alarm Icon
-80°C to 30°C
Temperature Low Alarm
A/V/C
A/V/C
Red
Alarm Icon
-99°C to -40°C
Door Open
V/C
V/C
Yellow
Warning Icon
Instantaneous
Door Open Too Long
A/V/C
A/V/C
Red
Alarm Icon
5-300 seconds
**Refrigeration System Failure
A/V/C
A/V/C
Red
Alarm Icon
-
*Defrost in Progress
V
V
Yellow
Warning Icon
-
Refrigeration Assist System A & B
-
-
Green
-
0°C to 40°C
System Operating Normally
V
V
Green
No Alarm or
Warning Icon
-
Preventative Maintenance Reminder
V
V
Green
Service Icon
1 to 24 months
Calibration Reminder
V
V
Green
Service Icon
1 to 24 months
A = Audible Alarm V = Visual Alarm C = Dry Contacts Switch
*
When a refrigeration system is defrosting, the warning light on the light tower and display will illuminate. The
defrosting system cannot assist in the chamber temperature recovery during that period (approximately 15
minutes).
***
When Refrigeration System Failed alarm occurs, the affect system switches from
Auto to OFF
.
Problems that cause Refrigeration System Failed are:
