Temperature Probe - Henny Penny 680 KFC Service Manual

The Temperature Probe relays the actual shortening
temperature to the control. If it becomes disabled, PROB will
show in the display. Also, if the temperature is out of calibra-
tion more than 10°F or C", the probe should be replaced as
follows:
1. Remove electrical power supplied to the fryer.
Place the Power Switch to the "OFF" position, and
unplug the power cord or turn the wall circuit breaker
off or electrical shock could result.
2. Drain the shortening from the cookpot.
3. Remove the Control Panel.
4. Remove probe connections from PC board.
5. Using a l/2" wrench, remove the nut on the compression
fitting.
6. Remove the probe from the eookpot.
7. Place the nut and new ferrule on the new probe and insert
the probe into the compression fitting until it extends one-
half (l/2) inch (1.3 cm) into the cookpot, 5116 inch (.78 cm)
on gas fryers.
8. Tighten hand tight and then a half turn with wrench.
Excess force will damage probe.
9. Connect new probe to PC board and replace Control Panel.
10. Replace shortening.
11. Turn power "ON" and check out fryer.