Problems with black ash clogging up my flame tubes
The tubes where the flames shoot through are always clogging up on my with a black
suet(ash. Sometimes the ash will fly out of the to exhaust vent. Why am I having this
trouble and how do I correct it? Also any ideas on how to clean the ash u, it is very
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Re: problems with black ash clogging up my flame tubes
Hi, If this is a new fryer it probably has the wrong gas jets in it. Probably set up for natural and using propane. Could be the gas pressures not set right on the valve. If this is the case, call your gas company and they will probably check it without charge. If it is a fryer that has been in use for a while and this problem just started you probably have a leak in your tubes to where oil is leaking into the flame area and the fryer will probably have to be replaced. It may be able to be welded if you have a good welder and he can find the leak in a place that can be welded.
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Check your exhaust, see if its clogged or blocked, clean the flame sensors, I that does not work, then your gas valve is starting to go bad, there is a cap on it if you take the cap off you can turn the gas flow down a little bit,
All indications are there could be an issue with your burner(s). Check for a blue flame. If the flame is yellowish, there's an issue with air/gas mixture. This would tend to cause flare ups and scorch the food. A thorough cleaning of the burners should resolve this (see attached youtube video)
Also, check all surfaces for any residue grease. Left over grease will burn hot and create the soot you've described.
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.
The jet you were cleaning with the wire is not the problem here - if it would have been clogged by dirt the flame would have been low always. This gas range has a flameout protection - a bimetal sensor that should cut off the gas when the flame extinguishes. In your case the sensor on that burner is malfunctioning - when it heats up it cuts off the gas instead of opening the control valve. You will have to replace it . For that i strongly advice you to call a certified repairman - it's a complex job on which you cannot allow leaks.
Is it still under warranty? I'd call Viking or a qualified repairman to fix it. If your burners are clogged, the flames should be coming out the venturi tube and flaming towards the gas valve knob. If the flames are coming out of the gas valve itself, then it will need to be regreased. If the burners can be removed without too much trouble, soak them in the sink with hot water and dishwashing detergent. Be sure to remove the knobs, so no one turns the gas on without the burners connected. If it's difficult, call a repairman.
I've got the same grill and was having the same problem - yellow flames coming out the front vents above the knobs. I removed the four burner tubes and they were full of soot and ash. The tubes were still in good condition so I simply knocked them with a screwdriver and a ton of black soot/ash came out. All the screws that hold them in place were so corroded they were falling apart so I had to drill them out. I cleaned everything up, put it back together with new screws and it works perfectly - nice blue flames!
I have had this happen & it is because your tube is clogged with a spiders web, I can about guarentee it; this happened to me 2 years in a row. Simply turn off the propane & disconnect the tank.....take off the grill grate & flame hood ....remove the tube & look inside it & see if its clogged....clean & put it back & everything should be fine.
The things you will want to check and correct are the burner venturi, this is where the gas and air mix (where you see the flame when it backfires), this being dirty or clogged will cause this problem, your burner at the top being dirty can also cause this. Also, be sure the orifice is clean. If possible you should also check the gas pressure and set it accordingly. The other thing to check is the burner tubes themselves, these are the tubes that go through the fryer, many times with this scenario the tubes are getting clogged. These tubes being clogged will not necessarily cause this problem, but you may as well clean them while you are there.
If the pilot won't stay lit, the thermocouple may be loose or faulty, the pilot orifice may be clogged, or the pilot light's flame may be set too low and needs to be adjusted.
You can clear a clogged orifice with a piece of thin wire, such as a bread tie with the paper stripped off of it. Be sure to turn off the gas to the furnace first! Also shut off the switch or circuit breaker that controls power to the furnace. Just poke the thin wire into the tiny orifice where the pilot flame normally burns to knock off any ash or debris.
Some pilots have a flame adjustment screw for adjusting the flame. To adjust this, refer to your owner's manual. Normally, this is simply a matter of turning the flame adjustment screw to achieve a full, steady 1 1/2-inch to 2-inch flame that doesn't have any yellow in it.