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THERMOSTAT ADJUSTMENTS (Cont.)
10. To recalibrate, hold the thermostat dial in place. Insert screwdriver into dial shaft to engage the calibration stem
adjustment screw (Fig. 20). Push inward (do not turn stem).
Fig. 20
Fig. 21
12. Release the calibration screw and reinstall the dial insert.
13. Set the dial to 450° F (232°C) and recheck temperature reading as described in Steps 7 through 9. If calibration is
not within ± 15°F (-9.44°C) of the dial setting, the thermostat must be replaced.
11. While holding stem calibration screw in place, turn thermostat dial until it is set on the actual temperature shown by
the testing device (Fig. 21).