Frymaster J1X, J2X manual Service Procedures, When installing thermostats, DO NOT OVER TORQUE

J1C, J1X, & J2X MASTER JET SERIES GAS FRYERS

CHAPTER 7: SERVICE PROCEDURES

CAUTION

When installing thermostats, DO NOT OVER TORQUE.

When electrical wires are disconnected, it is recommended that they be marked to facilitate reassembly.

7.1Replace Controlling or High-limit Thermostat

1.Drain shortening from the frypot.

2.Use an allen wrench to loosen set screw at the side of the thermostat knob. Remove the thermostat knob. See Figure 1, Item 1.

3.Remove the 2 set screws on either side of the thermostat shaft and remove the dial plate.

4.Disconnect the thermostat wires from the gas valve. See Figure 1, Item 2.

5.Use a slotted socket to unscrew the thermostat from the frypot.

6.Apply a small amount of Loctite PST56765 compound to the threads of the new thermostat. Install the thermostat.

7.To change the high-limit thermostat, disconnect the wires at the gas valve and follow instructions listed in Steps 5 and 6 to replace thermostat.

8.To calibrate the newly installed thermostat, see Section 5.1.

7.2Calibrating a Thermostat after Installation

1.Fill the frypot to the OIL-LEVEL LINE with shortening. Pre-melt solid shortening before starting calibration.

2.Ensure the gas valve knob is in the OFF position.

3.Insert a mercury thermometer or pyrometer in the center of the frypot 2 to 3 inches (50 to 75mm) deep.

4.Turn the fryer gas valve to the ON position.

NOTE: If the burner does not light at this time, it does not mean the thermostat is defective. Recheck the wiring, and then slowly turn the thermostat adjusting screw counterclockwise until the burner lights.

Turning the adjusting screw counterclockwise causes the burner to light, and turning it clockwise causes the burner to shut off.

5.When the shortening temperature reaches 325°F (162°C), turn the thermostat adjusting screw clockwise until the burner shuts off.

6.Allow the fryer to sit for a few minutes, and then slowly turn the thermostat adjusting screw counterclockwise until the burner lights.

7.Repeat Steps 5 and 6 until 325°F (162°C) is reached. A good calibration point is halfway between the lowest and highest temperature dial readings. This point should be at the 12 o'clock position. The fryer is in calibration if the burner lights at the calibration point as the shortening temperature drops - not when the burner shuts off as the temperature rises.

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