Shellab SCO31 - Manual (Page 21)

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OPERATION (CONTINUED)
Accessory Compatibility
Make sure that any accessory equipment you will be using inside the incubator can safely and
effectively operate at your selected temperature and CO
2
set points.
The Over Temperature Limit System (OTL)
When set, the OTL system prevents runaway heating in the event of a failure of the microprocessor
controller board or its thermometer probe by depowering the heating element whenever the
temperature in the incubation chamber exceeds the OTL setting. Typically the OTL is set 1°C
above the temperature display set point. Because of its nature as a mechanical cutoff system and
its lack of PID analytics, the OTL cannot deliver the same degree of temperature stability and
measurement precision as the digital display and microprocessor board. The OTL System should
only be used as a means of heating regulation for the incubation chamber until a failed controller
board and its thermometer probe can be repaired or replaced.