Despatch 926E Equipment Manual (C-155)Rev 2/11 - Manual (Page 33)

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High Limit Controller
This chamber is equipped with a non-indicating high limit controller. Anytime the
chamber temperature exceeds the limit set point, the control will trip, and conditioning
will stop. Power will not be restored until the chamber temperature is within tolerance.
Refer to the enclosed electrical schematic and the instrument instruction manual.
To reset the high limit controller after tripping, allow the chamber to cool below the high
limit set point. Place the POWER switch to the RESET position and release.
The chamber may be equipped with an optional low limit temperature control. This is a
non-latching control that will automatically reset once the chamber temperature has
risen above the low limit set point. The low limit set point can be adjusted by changing
the low temperature alarm setting on the Watlow EZ-Zone PM controller.