Thermatron Controller Calibration - Dean 24G Series Installation & Operation Manual

7.2 Main Burner Malfunctions (cont.)
PROBLEM
Main burner flames are
small and appear lazy;
Oil or shortening does
not come up to
temperature quickly.
Signs of excessive
frypot temperature; oil
or shortening quickly
becomes discolored.

7.3 Thermatron Controller Calibration

If the Thermatron controller requires adjustment, do the following:
1. Set the controller dial to the desired oil temperature and allow the oil or shortening temperature
to stabilize.
2. When oil temperature reaches setpoint (burners will cycle on and off four times, indicating
setpoint temperature has been reached), check the temperature with a high-quality immersion
thermometer. Insert the thermometer within 2-inches of the probe-bulb cover plate.
3. Loosen the knob setscrew and rotate the knob to the correct temperature setting on the
Thermatron faceplate.
4. Check the temperature again with a high-quality immersion thermometer to confirm that the
setting is correct.
5. Re-tighten the knob setscrew at the calibrated position.
24G SERIES FLATBOTTOM GAS FRYERS
CHAPTER 7: TROUBLESHOOTING
1. Authorized Service Agent Only: Check gas pressure at the
pressure tap of the gas control. Use a standard water-type U-
gauge manometer. With the burner in operation, the pressure
should be about 3.5 – 4" W.C. (10 mbar) on natural and 14"
W.C. (27.5 mbar) on propane gases. If not, unscrew the cover
of the pressure regulator adjustment and turn the adjusting
screw clockwise to increase gas pressure (or counterclockwise
to decrease the pressure).
cover.
1. Check Thermatron controller; may be out of calibration. Re-
calibrate in accordance with instructions in Section 7.3.
2. Check probe adjustment (systems without probe-bulb clamps).
Probe should be 1/8" or less to bottom of frypot (see illustration
on page 4-1).
securely fastened (current production models).
3. Authorized Service Agent Only: Check gas pressure.
4. Cooking oil or shortening is of inferior quality or used too long.
Replace with quality oil or shortening.
5. Authorized Service Agent Only: May be a short circuit in
system. Check wiring.
CORRECTIVE ACTION
Ensure sensor bulb clamp is present and
7-3
Replace regulator adjustment