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Temperature set point
The factory default temperature set point is 5°C for all
laboratory refrigerators. Adjusting the set point is not
recommended. In case the set point has to be changed,
follow the instructions given below. Set point can be adjusted
between 4 to 5.5 deg C only.
The display shows the current temperature.
Press Up / Down button to increase / decrease set point
temperature.
Table 5. Alarm Codes
Alarm
Trigger
code
"Hi"
Air temperature is
higher than "ALA-
>Hat" for "ALA-
>Htd"
"Lo"
Air temperature is
less than "LAt" for
"Ltd"
"dor"
Door open for more
than "ALA->dod"
"E01"
"S1" error
"E02"
"S2" error
General Purpose and Chromatography Refrigerators
Automatic
Outputs
clearance
User Configured
Blink "Hi" with the highest
temperature; If configured: cut in
alarm relay, beep the buzzer
User Configured
Blink "Lo" with the lowest
temperature; If configured: cut in
alarm relay, beep the buzzer
Always
Blink "dor". If configured: cut in
alarm relay, beep the buzzer
Always
Blink "E01". If configured: cut in
alarm relay, beep the buzzer
Always
Blink "E02". If configured: cut in
alarm relay, beep the buzzer
After 30 seconds, the display automatically reverts to the
current temperature.
Alarms
The alarm system is designed to provide visual and audible
warning signals for both power failure and rise in temperature.
The alarm is equipped with a battery backup.
The power failure alarm system is activated only when
the key switch is turned to the Power Failure Alarm ON
position.
Low temperature, high temperature and door ajar alarms are
set to ON position by default as soon as the controller is
turned on. These cannot be turned off.
Default low and high alarm values are 2°C and 10°C. These
values may be adjusted, following instructions in section
Temperature set point.
Note: There is no door open alarm on sliding door model.
The audible warning signal alerts when there is a power
failure, temperature alarm condition, or when the door is ajar
for more than 1 minute.
Alarm display codes for high temperature, low temperature,
sensor failure, door ajar are mentioned in Table 5.
Comments
High temperature alarm
Low temperature alarm
Door open alarm
"S1" sensor failure = (short
or open)
"S2" sensor failure = (short
or open)
Operation |
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