Temperature Settings; Alarms - Thermo Scientific TSX Series Installation And Operation Manual

Operation
9.5 Temperature
The factory default temperature setting is -20°C for all manual defrost freezers.
Settings
To change the factory temperature settings, refer to the instructions in
Section 9.3.
The freezer described in this manual is designed for optimum performance at
-20°C. It is advisable to call Technical Service before changing setpoints.

9.6 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.
Default cold and warm alarm values are -25°C and -10°C. These values may
be adjusted, following instructions in Section 9.3.
The alarm system is activated only when the key switch is turned to the
Alarm On position. The audible warning signal sounds when there is a
power failure, temperature alarm condition, or when the door is ajar for
approximately 3 minutes with default door alarm setting.
The Mute function (pressing the button) allows you to turn off the
( )
audio warning without turning off the visual indicators. The alarm will ring
back approximately after 6 minutes if the alarm is still active.
During a warm alarm, a flashing of the uppermost bar of the thermometer,
the temperature display, and the speaker icon will occur at the same time.
If there has been a warm alarm since the last alarm reset, but the
temperature is not currently in an alarm state, the uppermost bar of the
thermometer and the speaker icon will slowly alternate in flashing.
During a cold alarm, a flashing of the bulb of the thermometer, the
temperature display, and the speaker icon will occur at the same time. If
there has been a cold alarm since the last alarm reset, but the temperature is
not currently in an alarm state, the bulb of the thermometer and the speaker
icon will slowly alternate in flashing.
During a power failure, the power failure icon will illuminate, the
thermometer will display without the bulb, and the temperature will flash
approximately every 3 seconds. If there has been a power failure since the
last alarm reset, the power failure icon and the speaker icon will slowly
alternate in flashing.
During a low battery condition, the low battery icon will illuminate.
The alarms can be reset by pressing and holding the and
simultaneously.
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Thermo Scientific TSX -20°C Flammable Materials Storage Laboratory Freezers