d.Let the fryer cycle 4 to 6 times before checking the temperature. Compare the thermometer temperature against the thermostat setting. If the values are more than 5°F apart, calibrate the thermostat using the appropriate calibration procedure in this manual.
1.5.6Thermostat Calibration
There are two types of thermostats that can be calibrated, a Robertshaw electric and a gas operated manual mechanical. Both thermostats are calibrated by following the procedures below.
a.Place the tip of the thermometer in the shortening approximately 1" above the temperature sensors.
b.Set the Thermostat to 325°F and wait for the temperature reading on the thermometer to rise.
c.Let the fryer cycle 4 to 6 times to ensure that the temperature has stabilized. Compare the thermometer temperature against the thermostat setting.
d.Remove the thermometer dial by pulling the knob straight out. DO NOT rotate the dial.
e.Hold the outside of the shaft so it does not move. Use the tip of a small, flat tip screw driver to scrape away the sealing compound from the adjustment screw.
f.Turn the adjustment screw clockwise to lower the temperature setting and counterclock- wise to raise the temperature. One quarter turn changes the temperature approximately 25°F.
g.Turn the adjustment until the burners turn on at 325°F. Replace the knob and allow the fryer to cycle 4 to 6 times. Check the temperature of the thermometer against the thermostat dial, if it is greater than 5°F difference repeat the calibration procedure.
h.When the calibration is correct, remove the thermometer and replace the tube screen.
1.5.7Thermostat Calibration (Solid State)
The solid state thermostat knob has the temperature settings imprinted in the panel behind the dia.
a.Place the tip of the thermometer in the shortening approximately 1" above the temperature sensors.
b.Set the Thermostat to 325°F and wait for the temperature reading on the thermometer to rise.