Question about Frymaster Dean H17-SC Deep Fryer

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Pilot light I have a Frymaster J1C deep fryer and the pilot light goes out when the main burner reaches tem and shuts off.

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Are you sure that the fryer is not shutting off on high limit? The high limit switch will shut off the main burner and pilot as well. The high limit will trip if the thermostat is defective or if it is out of calibration and does not shut off the main burner when the set point is reached within normal operating limits. In either case the oil gets too hot, ~425F. Check the oill temperature when it shuts off. The high limit may also defective. Check for continuity between the high limit leads immediately after it shuts off. If the leads show no continuity at normal oil temperatures, the high limit is defective. The high limit will automatically reset when the oil cools down, so it must be checked immediately after shutdown.

There are other possibilities such as a weak pilot, weak thermopile, loose or damaged wiring or connectors, ect., but in these cases the fryer will often go out randomly, not just when the main burner shuts off.

Posted on Jul 07, 2009

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Assuming that your make up air and exhaust hood are properly balanced, no negetive pressure conditions exist, your gas manifold pressure is at 4" wc, your air/gas mix on the burner set correctly, the your problem would be the pilot adjustment. If the flame is not intense enough flame to survive the sudden air shock, it will go out.

The pilot height should be about 1 1/2". Your Pilot orfice could also need cleaning. Eliminate excessive draft in your kitchen.

Here is the manual for your unit, it covers these topics.

http://www.frymaster.com/docs/uploaded/fry/products/OperationalManuals/819-5355.pdf

Posted on Feb 05, 2009

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I suggest that you boil it out before using. This cleans the pot of any contaminants here is how to do this.
Boiling Out the frypot To ensure that the frypot is free of any contamination resulting from its manufacture, shipping, and handling during installation, the frypot must be boiled out before first use. Frymaster recommends boiling out the frypot each time the oil or shortening is changed. 1. Before lighting the burner, close the frypot drain valve and fill the frypot with a mixture of cold water and boil-out solution or detergent. Fill to the lower oil-level line. 2. Light the fryer in accordance with the lighting instructions in Section 3.1. 3. Simmer the solution for one hour.
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Hi there, it sounds like your thermopile, for the pilot, is failing during use, when this happens, the small DC voltage it generates is less than the gas valve requires to stay open, and shuts off the pilot, which shuts off the main burners. Another thing that could be happening, is the hi limit is opening prematurely, instead of shutting of the pilot at 450 deg. it now is opening at 325, or 225 or 250. Sometimes the sensing bulb gets broken where it pass's through the oil tank causing this symptom. If you temporarily bypassed the hi limit to test this also, and it still goes off, you need a thermopile. If it stays on, check your temp with a reliable thermometer, and see if it reads fairly close to your setting, if so, then you need a hi limit.
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SR24


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