35 SERIES GAS FRYERS
CHAPTER 5: PREVENTIVE MAINTENANCE
5-4
4. When the burner starts for the fourth time, the thermometer/pyrometer reading should be within ± 5ºF
(2ºC) of the temperature knob setting. If it is not, calibrate as follows:
a. Loosen the setscrew in the temperature control knob until the knob will rotate freely on its shaft.
b. Rotate the knob until the index line on the knob is aligned with the marking that corresponds to the
thermometer or pyrometer reading.
c. Hold the knob and carefully tighten the setscrew.
d. Recheck the thermometer/pyrometer reading against the temperature control knob setting the next
time the burner comes on.
e. Repeat steps 4.a. through 4.d. until the thermometer/pyrometer reading and knob setting agree
within ± 5ºF (2ºC).
5. Remove the thermometer or pyrometer.
If calibration cannot be obtained for any reason, call a Factory Authorized Service Center for assistance.
Check Thermostat Calibration
1. 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 thermostat.
2. 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. Call your Factory Author-
ized Service Center (FASC) to arrange this service.
Clean Gas Valve Vent Tube
1. Carefully unscrew the vent tube from the gas valve. NOTE: The vent tube may be straightened for
ease in removal.
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.