Helmer Scientific i.Series
®
Ultra-Low Freezer
Service and Maintenance Manual
360173-A/C
12
3.3
Alarm Conditions
If an alarm condition is met, an alarm activates. Some alarms are visual only; others are visual and audible. Some alarms are sent
through the remote alarm interface. The table indicates if an alarm is audible (A), visual (V), or sent through the remote alarm
interface (R).
Note
The primary monitor probe was formerly referred to as the chamber temperature sensor.
Table 2. Alarm Reference
Alarm
Alarm Type
High Temperature (Primary Monitor Probe)
A, V, R
Low Temperature (Primary Monitor Probe)
A, V, R
Sensor Failure: Chamber Temperature Control
A, V, R
High Ambient Temperature
V, R
Low Ambient Temperature
V, R
Sensor Failure: Ambient Temperature
A, V, R
Refrigeration System: High Stage Compressor Temperature
A, V, R
Sensor Failure: High Stage Compressor Temperature
A, V, R
Sensor Failure: High Stage Condenser Temperature
A, V, R
Refrigeration System: High Stage Compressor Failure
A, V, R
Refrigeration System: High Refrigerant Pressure
A, V, R
Refrigeration System: Low Stage Compressor Temperature
A, V, R
Sensor Failure: Low Stage Compressor Temperature
A, V, R
Refrigeration System: Low Stage Compressor Failure
A, V, R
Sensor Failure: Heat Exchanger Temperature
A, V, R
Low Battery
V, R
No Battery
A, V, R
Power Failure: No AC
A, V, R
Power Failure: High Voltage
A, V, R
Power Failure: Low Voltage
A, V, R
Power Up
-
Door Open (Time)
A, V, R
Clean Filter
V, R
CO
2
/ LN
2
Back-up System Active (Optional)
V, R
Communication Failure 1: Control Board
A, V, R
Communication Failure 2: Configuration File
A, V, R
Communication Failure 3: Database
A, V, R
Date / Time Change
-
