Thermo Scientific TSX Series Installation And Operation Manual page 30

Operation
26 TSX -20°C Laboratory and Enzyme Freezers
Table 7. Thermometer Display on Control Panel (Setpoint -20°C)
Bars Temperature
Displayed (°C)
Bulb Only -25 (cold alarm)
1 Bar -23.5
2 Bars -22
3 Bars -20.5
4 Bars -19
5 Bars -17.5
When cabinet temperature exceeds the warm alarm setpoint, the top bar of the
thermometer flashes. When temperature is lower than the cold alarm setpoint,
the bulb flashes. When you are in programming mode (described in Table 9) the
thermometer shows the setpoint value you are changing.
3. Power failure - illuminates when the main power supply is interrupted.
In this case the audible alarm also sounds.
4. Service mode - illuminates when the controller is in service
programming mode.
5. Increase - pushbutton used to increase setpoint values in programming
mode and for various display functions.
6. Door ajar - illuminates when the freezer door is open longer than
approximately 3 minutes (when the alarm is activated and the key
switch is turned to the alarm position).
7. Battery low - illuminates when the backup battery is low (refer to
Section 12.6).
8. Decrease - pushbutton used to decrease setpoint values in programming
mode and for various display functions.
9. Scan - pushbutton used to change the main display and for various
other functions.
10. Audible alarm - illuminates during warm and cold alarm conditions.
Bars Temperature
Displayed (°C)
6 Bars -16
7 Bars -14.5
8 Bars -13
9 Bars -11.5
10 Bars -10 (warm alarm)
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