Frymaster CF Series - Manual (Page 37)

CF SERIES GAS FRYERS
CHAPTER 5: PREVENTATIVE MAINTENANCE
5-4
Check Thermostat Controller Thermostat Calibration
(This check applies only to units equipped with Thermostat Controllers)
1. Ensure frypot is filled with cooking oil or shortening.
2. Set the temperature control knob to 325
°F (162°C) and insert a good grade thermometer or
pyrometer into the frypot so that it touches the temperature probe guard.
3. When the burner cycles off, set the temperature control knob to 340
°F (170°C). As the reading
on the thermometer or pyrometer nears the control knob setting, but before the burner cycles off,
reset the knob to 325
°F (162°C). Just as the reading on the thermometer or pyrometer drops
below 325
°F (162°C), the burner should cycle on. If it does not, calibration is required. Contact
a Factory Authorized Service Center (FASC) for service.
Check Computer Magic III Set Point Accuracy
(NOTE: This check applies only to units equipped with Computer Magic III.5 Controllers.)
1. Insert a good-grade thermometer or pyrometer into the oil, with the end touching the fryer
temperature probe.
2. When the computer displays with no red dot between the first and second dashes
(indicating that the frypot contents are within the cooking range), press the switch once to
display the temperature of the cooking oil or shortening as sensed by the temperature probe.
3. Press the switch twice to display the set point.
4. Note the temperature on the thermometer or pyrometer. All three readings should be within
±5°F (2°C) of each other. If not, contact a Factory Authorized Service Center for assistance.
Clean Gas Valve Vent Tube
1. Carefully unscrew the vent tube from the valve. (NOTE: The vent tube may be straightened.)
2. Pass a piece of ordinary binding wire (.052 inch diameter) through the tube to remove any
obstruction.
3. Remove the wire and blow through the tube to ensure it is clear.
4. Reinstall tube and bend it so that the opening is pointing downward.