Helmer Scientific i.Series
®
and Horizon Series
™
Refrigerator - Pass-Thru
Service and Maintenance Manual
360429/A
47
10.2 Alarm Reference
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
If the system is in Power Failure (PoFF) alarm, an Er05 error can be expected as a result of the absence of power to the
compressor inverter.
Table 10. Alarm Indications
Alarm
Alarm Type
Visual Indicator
High Temperature (Primary Monitor Probe)
A, V, R
HIGH TEMP Lamp
Low Temperature
(Primary Monitor Probe)
A, V, R
LOW TEMP Lamp
Display/Control Board Communication Error
A, V, R
Er04
Control Board to Compressor Inverter Error
A, V, R
Er05
Door Open
(Time)
A, V, R
DOOR OPEN Lamp
(flashes after 3 minutes)
Power Failure
A, V, R
PoFF
Probe Failure
Control
(RTD1)
A, V, R
Er01
Primary Monitor
(RTD2)
A, V, R
Er02
No Battery
V
bAtt
Configuration Error
A, V, R
Er07
10.3 Settings
Temperature Setpoint
The default setpoint for the refrigerator is 4.0 °C for HBR and 5.0 °C for HPR models. This can be changed if your
organization requires a chamber temperature other than the default setting.
Change Setpoint:
Note
The current temperature setpoint is typically higher than the chamber temperature.
1. Press and release
MODE
to change to Control mode. CONTROL lamp will illuminate.
2. Press and hold
SET
to display current temperature setpoint.
3. Hold
SET
and press
Up
or
Down Arrow
as necessary to set desired setpoint value.
4. Release
SET
button. Setpoint is changed.
5. Press and release
MODE
to return to Monitor mode. MONITOR lamp will illuminate.
Temperature Settings
Temperature settings are factory pre-set. Settings can be viewed and changed through the Monitor and Control interface.
Table 11. Parameters, Indicators and Settings
Parameter
Visual Indicator
Range
Default
Celsius or Fahrenheit
°C Lamp or °F Lamp
.C, .F
.C
High Temperature
MONITOR Lamp & HIGH Lamp
-40.0 to 25.0 (°C); -40 to 77 (°F)
5.5 °C
(HBR models)
6.5 °C
(HPR models)
Low Temperature
MONITOR Lamp & LOW Lamp
-40.0 to 25.0 (°C); -40 to 77 (°F)
1.5 °C
(HBR models)
2.0 °C
(HPR models)
Monitor Offset
MONITOR Lamp only
-10.0 to 10.0 (°C); -18 to 18 (°F)
Varies
Control Offset
CONTROL Lamp only
-10.0 to 10.0 (°C); -18 to 18 (°F)
Varies
Upper Rail Limit
CONTROL Lamp and HIGH Lamp
0.1 to 10.0 (°C); 1 to 18 (°F)
1.5 °C
Lower Rail Limit
CONTROL Lamp and LOW Lamp
0.1 to 10.0 (°C); 1 to 18 (°F)
-1.5 °C
Horizon Series
