Thermo coupler on all the time, push in button, shuts off gas
Just replaced thermo coupler on bakers pride, old, pizza oven. The gas is on immediately to the pilot. I also have a main valve, which is below the thermo coupler, when I turn this off, it turns off the gas to the thermo coupler. Now I know this doesn't make sense, however, this is exactly what is happening. Push in the red button for the thermo coupler, gas goes off.
Re: thermo coupler on all the time, push in button, shuts...
Bad Safety valve. (valve w/red button). Thermocouple keeps the magnet open to keep pilot and so gas can flow to burner. Make sure pilot is clean and strong and hitting thermocouple. If it doesnt stay lit replace Safety Valve.
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If you have the older Bakers pride manufactured more then 20 years ago and it has never had service, it sounds like the safety valve is defective, that's the red button you push in the light pilot, if the pilot is lit and when you turn the manual gas valve on for the main burner to lite and still it does not you problem still may be the safety and/or a failing thermocouple.
You must use a long crowe bar lift the brick and pull it out need the size of the brick to let you know how much and where to get it if it a 2inch thick they are no longer sold most lilkely it 1 1/2 inch
Hi, don't know if you received an answer, however your gas valve sounds to be bad, when turned to pilot, it should only allow gas to the pilot assy. The problem is, it has already failed to shut fully, if it still does that with it in the off position, it would still be allowing gas through it, if the pilot goes out, there is now no protection to shut itself off, get it replaced ASAP. Hope that helps, and thank you.
does it light then immediately go out? if yes, usually you have to hold in a button to allow gas to flow while you light the pilot, and hold this button until the therm0-couple is heated with the pilot flame. If the thermo-couple is not sufficiently heated and you let go of this button, the pilot light will go out as the safety circuit thinks there's no flame and unburned gas is entering the oven.
The other thing you could do is adjust the height of the pilot flame... there's usually an adjustment screw near the button described above which will allow you to adjust the height of the flame. Make the flame just big enough to guarantee that it keeps the thermo-couple hot AND that it can light the oven without being blown out.