FRYER TROUBLESHOOTING GUIDE (Continued)
PROBLEM | CAUSE | REMEDY |
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Main burners do not | 5. Gas control valve has failed. | 5. Replace the gas control valve. |
ignite. (Continued) |
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Main burners do not | 1. Thermostat has failed. | 1. Turn the thermostat control |
stop burning. |
| knob to OFF. If the burners |
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| do not quit burning, the ther- |
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| mostat has failed and must |
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| be replaced. |
| 2. Gas control valve has failed. | 2. Turn the gas control valve knob |
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| to OFF. If the burners do not |
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| quit burning, the gas control |
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| valve has failed and must be |
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| replaced. |
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Liquid shortening does | 1. Low gas supply pressure [less than 6”W.C. | 1. Measure the gas supply pres- |
not reach the desired | for natural gas (11” W.C. for propane) | sure. |
temperature for frying. | when all other | Contact your local gas supplier |
| operating], causing reduced heat from main | to obtain adequate gas supply |
| burners. | volume and pressure. |
| 2. Low gas manifold pressure [less than 3½” | 2. Measure the gas pressure at |
| W.C.for natural gas (10” W.C. for pro- | the fryer’s manifold pressure |
| pane). | tap. Adjust the manifold pres- |
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| sure (see Figure 6), as neces- |
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| sary: [a] Unscrew (and re- |
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| tain) the threaded Main Burner |
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| Regulator Adjustment Cover. |
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| [b] Use a |
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| driver to turn the regulator |
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| adjustment screw (clockwise to |
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| increase; counterclockwise to |
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| decrease) to reset the pressure |
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| adjustment. [c] Reinstall, and |
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| tighten the Regulator Adjust- |
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| ment Cover, when finished. |
| 3. Loose knob on thermostat; or thermostat | 3. Stir the shortening to mix the |
| requires calibration (temperature setting | hot shortening with some from |
| differs by about 10°F from the measured | the lower ‘cool zone’ and allow |
| shortening temperature). | it to sit for 5 minutes. Turn the |
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| thermostat knob until it ‘clicks’ |
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| on (causing the main burners to |
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| flame); note the setting where |
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| this occurs. Turn the thermo- |
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| stat knob until it ‘clicks’ off |
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| (causing the main burners to go |
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| out); note the setting where this |
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| occurs. Repeat this tempera- |
18
