FRYER TROUBLESHOOTING GUIDE (Continued)
PROBLEM | CAUSE | REMEDY |
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Liquid shortening does | 3. Loose knob on thermostat; or thermostat | 3. (Continued) |
not reach the desired | requires calibration (temperature setting | the shortening temperature has |
temperature for frying. | differs by about 10°F from measured | stabilized. |
(Continued) | shortening temperature). (Continued) | Measure the temperature of |
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| the shortening by inserting an |
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| accurate thermometer about |
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| 4 inches into the shortening to |
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| measure its temperature. If the |
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| temperature difference between |
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| the measured temperature and |
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| the thermostat setting is 10°F |
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| or less, the thermostat can be |
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| recalibrated. |
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| Recalibrate the thermostat by: |
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| (a) removing the cap on the |
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| thermostat control knob; (b) |
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| loosening the center brass hex |
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| nut portion of the knob; (c) turn |
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| the pointer portion of the knob to |
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| the measured temperature value |
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| of the thermostat setting. |
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| Tighten the brass hex nut to lock |
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| the adjustment. Replace the |
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| cap on the knob. |
| 4. Thermostat setting is more than 20°F dif- | 4. Check the thermostat setting |
| ferent than measured shortening tempera- | against an accurate measure of |
| ture. | the shortening temperature. If |
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| the temperature difference is |
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| greater than 20°F, the thermo- |
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| stat can possibly be recali- |
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| brated. |
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| Recalibrate the thermostat by: |
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| (a) removing the cap on the |
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| thermostat control knob; (b) |
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| loosening the center brass hex |
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| nut portion of the knob; (c) turn |
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| the pointer portion of the knob |
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| to the measured temperature. |
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| Tighten the brass hex nut to lock |
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| the adjustment. Replace the |
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| cap on the knob. |
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| If this calibration is unsuccess- |
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| ful, the thermostat has failed and |
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| must be replaced. |
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