Pitco SSHLV (ROV) Gas Fryers
16 Testing the Auto Top Off Probe (if equipped)
The Auto Top Off probe should be tested prior to replacement (follows this section).
1. Unplug connector J7 from the Auto Top Off Relay board. Measure the resistance with a
multimeter (set to OHMS) between pins 1 and 2. The resistance should be approximately 150
ohms (+/- 2 ohms). Place either probe to the frame of the fryer and insure you have an open
circuit (open to frame). If the probe measure outside this range, it must be replaced.
Prior to measuring the probes resistance between pins 4 and 5, insure the fry vat contains
enough oil to completely cover the probe.
2. Measure resistance with the multimeter between pins 4 and 5. The meter should read 167
OHMS at 350 degrees F. Measure the resistance with black lead to the frame to insure an open
circuit reading (open to frame).
a. Resistance is dependent on the probe temperature. At room temperature, the resistance
is 108 ohms. At cooking temperatures, the resistance can be as high as 167 ohms. If the
probe measures within this range, it’s OK.
L22-392 R1 36
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