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MASTER JET CF SERIES ATMOSPHERIC GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
1-4
1.1 Functional Description (cont.)
MJCFE Series fryers equipped with computers have a temperature probe. In these units, the probe
resistance varies directly with the temperature. That is, as the temperature rises, so does resistance at
a rate of approximately 2 ohms for every 1° (F or C). Circuitry in the computer monitors the probe
resistance and controls burner firing when the resistance exceeds or falls below programmed
temperatures (setpoints). The temperatures are programmed by means of a keypad on the face of the
computer.
All MJCF Series Atmospheric gas fryers are equipped with a high-limit thermostat. In the event
that the fryer fails to properly control the oil temperature, the high-limit thermostat prevents the fryer
from overheating to the flash point. The high-limit thermostat acts as a normally closed power
switch that opens when exposed to temperatures in the range of 415°F to 435°F (213°C to 224°C).
The high-limit thermostat is the same for CE and Non-CE applications. When a replacement high-
limit thermostat is ordered, ensure the kit appropriate for the valve in use is ordered.
1.2 Accessing Fryers for Servicing
DANGER
Moving a fryer filled with oil may cause spilling or splattering of hot liquid. Follow
the draining instructions in the Operator’s manual that shipped with the fryer.
1. Shut off the gas supply to the unit. Unplug the power cord(s). Disconnect the unit from the gas
supply.
2. Remove any attached restraining devices.
3. Relocate the fryer for service accessibility.
4. After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices,
and plug in the electrical cords.