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Re: one burner puts out soot.
Hi there, I believe that the burner you are having a problem with, needs the inside of it cleaned, probably has alot of dust inside, or some material is in/on the orifice where the gas enters, you could also have an alignment problem with the orifice, causing a disturbance in the flow of the gas/air mixture. In addition it sounds like you may have a gas pressure problem, you should contact your gas supplier to have it checked, or call your local service company. Hope that helps, and thank you.
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The burner or the burner venturi is clogged. The burners are held in place with 2 bolts at the top and you need a 1/2 inch wrench. Remove the bolts and lift the burners off the brass orifices. Make sure all the holes are clear. If they are clogged they need to be drilled out. You should not have yellow in the flames in the burner tube.... kinda looks like the are sooting. This causes flames to come out the bottom of the burners.
The heat exchanger might be a result of the yellow flame but not the cause of it burning yellow. I would guess it is the amount of air being mixed with the gas. Most burners have a slotted metal air mixture ring on the front of the burner near the brass orfice, you are calling a jet. There is a locking screw to release the ring so it can turn to adjust the amount of air being mixed with the gas. If this doesn't fix the yellow flame it could be a gas pressure problem that could be the external regular in the gas line. Not sure if you are talking about the pilot flame or the burner flame or both? A tech should know how to adjust the air mixture.
Note that sooting with yellow flame is the result of insufficient air (i.e. oxygen) mixing with the propane gas. You need to identify where do you open the orifice or neck where the propane gas is released to burner. Open this orifice wider to add more air mixture to your propane and you should be able to get the flame back to bluish color.
Hi there. You should inspect the fire tubes, it is a tunnel under the fry tank where the burner flames suppose to travel to heat up the oil. Your fire tubes may be clogged with soot or carbon that's why flames cannot go thru the fire tubes. Fire tubes must be free of soot or carbon deposits. Soot build up on fire tubes can be prevented by keeping the gas pressure at standard as much as possible, low gas pressure produce yellow flame or poor flame quality and in turn will produce soot. Also, make sure that no air or ventilation is directed towards the flue riser, otherwise, the same will result, flames rolling back towards the door. Regards.
There are few things which causes fryers to produce yellow flame on burners. First- Low gas pressure and volume, second- carbon or soot formation on burner face and heat tubes. Check first if your fryer has one of these conditions and try to address this as soon as possible.
Low gas pressure will produce low flame quality (yellow flame). Check and remove any dirt or soot on burner holes, and orifice Burner flame not going inside the fire tube could be due to soot or carbon build up inside the fire tube blocking the flame path, check the inside of the fire tube, if considerable amount of soot is seen, better have them removed. Yellow flame will cause a lot of problem on fryers if not corrected as soon as possible. If you have doubt on your gas regulator, better have a qualified service technician to check it.