Frymaster 24G Series Main Burner Malfunctions cont, Thermatron Controller Calibration

24G SERIES FLATBOTTOM GAS FRYERS

CHAPTER 7: TROUBLESHOOTING

7.2 Main Burner Malfunctions (cont.)

PROBLEM		CORRECTIVE ACTION
Main burner flames are	1.	Authorized Service Agent Only: Check gas pressure at the
small and appear lazy;		pressure tap of the gas control. Use a standard water-type U-
Oil or shortening does		gauge manometer. With the burner in operation, the pressure
		should be about 3.5 – 4" W.C. (10 mbar) on natural and 14"
not come up to
		W.C. (27.5 mbar) on propane gases. If not, unscrew the cover
temperature quickly.		of the pressure regulator adjustment and turn the adjusting
		screw clockwise to increase gas pressure (or counterclockwise
		to decrease the pressure). Replace regulator adjustment
		cover.
Signs of excessive	1.	Check Thermatron controller; may be out of calibration. Re-
frypot temperature; oil		calibrate in accordance with instructions in Section 7.3.
or shortening quickly	2.	Check probe adjustment (systems without probe-bulb clamps).
becomes discolored.
		Probe should be 1/8" or less to bottom of frypot (see illustration
		on page 4-1). Ensure sensor bulb clamp is present and
		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.

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.

7-3