Vulcan 1ER50A User Manual download pdf (Page 13)

ERA & EBD SERIES ELECTRIC FRYERS - SERVICE PROCEDURES AND ADJUSTMENTS

SERVICE PROCEDURES AND ADJUSTMENTS

TEMPERATURE PROBE TEST

The temperature probe is an RTD (resistance

temperature device) of the thermistor type. As

temperature increases the resistance value

decreases.

Probe Fault

If a temperature probe fault occurs, red diagnostic

LED on back of control assembly (inside control box

cover) will flash. The heat demand outputs are

de-activated.

This will continue until the fault clears, power is

cycled or problem resolved.

A temperature probe fault can be caused by a lead

wire break or a lead short.

To Check:

1. Turn power switch off.

2. Disconnect cooking control connector.

3. Test the probe using a VOM to measure

resistance.

Connect the meter leads to pins 4 &

5 on the male connector.

A. If the measured resistance values are

within the allowable range, the probe is

functioning properly. Reverse procedure to

install.

B. If the measured resistance values are

outside the allowable range, install a

replacement probe and check for proper

operation.

Temperature (ºF) Resistance (Ω)

77 90,000 - 110,000

212 5,016 - 6,130

275 1,804 - 2,204

300 1,254 - 1,534

350 646 - 790

392 391 - 478

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Vulcan 1ER50A User Manual Page 13