Question about All-Pro Kerosene Garage Shop Heaters - All Pro PK115T Forced Air Kerosene Space Heater

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HARD START AND BLOWING SMOKE

We have a kerosene (currently using diesel fuel) forced air heater that has recently not wanted to start and when it does it blows a puff of black smoke.
What kind of servicing is recommended ?

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Clean all of your filters and the spark plug and go back to useing K1 kerosene. Diesel fuel has a higher ignition temp. burns dirty and has a tendency to gel.

Posted on Feb 03, 2009

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Replaced rotor on my 115 ready heater now it puts out way to many fumes,it burns my eys.any suggestions


The fuel/air mixture is not right.
  • Start by setting the pump pressure to factory specs.
  • Stop all air/vacuum leaks between the air pump & nozzle
  • If the problem persists, replace the nozzle. Desa recommended annual replacement. Simply stated- the nozzle wears out to a point that the fuel is a spray rather than a fog and the fuel can't burn completely.
  • You don't state the type being burned. Diesel smells more than kerosene.

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I looked in the manual-- and under operating instructions it says:

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I have an All Pro 150000 btu kerosene / diesel torpedo heater. It runs for a few minutes and then starts sputtering, shooting flames and smoke. What causes this problem?


First thing is to download the service manual.

http://www.desaparts.com/service_manuals.html

You need to make sure the filters are clean and that you are getting the proper air pump pressure.

If the units starts up and runs good and slowly goes out it will normally be due to a lack of fuel getting to the nozzle. When there is not enough fuel being delivered to the nozzle from either a clogged fuel filter of dirty air pump output filter the unit will slowly shut down from lack of fuel.

If the unit shuts down while it is running properly and the nose come is orange then you probably have a problem with a photocell or the flame out control.

If you have other questions you can contact our service department at 269-685-4125 at extension 224

Thanks

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www.allpartsinc.com

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I have a portable forced air heater Model R55A heater size 55,000/Hr can I use diesel fuel instead of kerosene?


You can, but prolonged use of diesel fuel will burn out the cone faster. Too hot. And it stinks alot worse than kerosene.

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It sounds like it is currently working .. is that right? Or does it only work if you let it sit for an hour, still? The blue smoke probably is from the residual fuel not burnt when it "threw raw fuel out the end" some the fuel probably drained to a low point ..outside of the combustion chamber and then may have ignited after shut down.. to cause the blue smoke out the back... when you turned it off.

If when your starting it up... it doesn't start the first time.. wait 10seconds then try again.. noting what it apparently does.. and doesn't do. does it just 'through fuel for 5 seconds.. does the fan spin .. and push air at the same time when its starting? If yes for both, does the ignitor ignite the fuel/air mixture, briefly then it shuts off.. ?? Hope this line of thinking helps you out
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