oil leak in blast tube

Weezbo

> Tilting the burner won't fix the problem but it <BR>
> is supposed to be donw hill. You either have air <BR>
> in your oil system or the oil is impinging on the <BR>
> flame cone. This would be easy to diagnose with <BR>
> a CO analyzer. If CO readings at light-off and <BR>
> shut-down are over 100ppm but not during the run, <BR>
> you have an air problem. If the CO is only over <BR>
> 100ppm at shut-down then the oil is hitting the <BR>
> flame cone. This test cannot be done with a <BR>
> Testo meter because it does not repond fast <BR>
> enough to get these readings. All other meters <BR>
> are usually fast enough. <BR>
<BR>

heat help

oil leak in blast tube

Hi, I have oil leaking into the blast tube. The blast tube was changed complete and new nozzle installed.Also changed pump, thought maybe check valve in pump was not working properly. After firing boiler several times there is a small amount of oil in tube. Cannot find where oil is coming from.

rjm

sometimes the heat from the bloir after shutdown will drawthe oil out of the nozzle assemble.. is it a beckett burner?

ed wallace

oil leak in blast tube

did they replace the gun assembly when the blast tube was changed? maybe nozzle is not tight blast tube should have a slight down hill tilt toward the boiler pump seal might be leaking also check the fittings and plugs on the pump

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heat help

HI ED, Gun assembly was not changed with blast tube. Gun is tilted slightly back. Nozzle is tight. Replaced pump.

heat help

Hi, rjm. Yes, it is a becket burner.

Ron Schroeder

You may

want to try a post purge control to cool down the chamber, thus keeping heat off the nozzle on shut down. If its power vented then increase the post purge time. Burner should be tilted toward the chsmber one way to tell is take a nozzle vile of water dump in blasttube and see which way it runs.

Guy_6

air

Air trapped in the oil system will compress behind the nozzle when the burner is running. After shut-down it expands again, but without any real pressure or even the fan to move it forward, it drips into the blast tube. Because of the backward pitch, it is coming back.
Make sure that the pump gasket is good-in fact, just replace it. Check the rest of the oil system as well.

GW

ed wallace

oil leak

so blast tube was replaced but not gun assembly might be the nozzle adapter needs either resurfacing or replacing

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heat help_2

oil in blast tube

Hi ED, thanks for your help.The nozzle adapter was replaced with the blast tube.I thought that was the problem ,is it possible it is defective.If I tilt the gun foward would this help and be safe.

Jim Davis_3

Tilting the burner won't fix the problem but it is supposed to be donw hill. You either have air in your oil system or the oil is impinging on the flame cone. This would be easy to diagnose with a CO analyzer. If CO readings at light-off and shut-down are over 100ppm but not during the run, you have an air problem. If the CO is only over 100ppm at shut-down then the oil is hitting the flame cone. This test cannot be done with a Testo meter because it does not repond fast enough to get these readings. All other meters are usually fast enough.

Jim Davis_3

Duplicate

Paul Fredricks_2

If it is an AFG, make sure there is a gasket under the transformer and the air dam in in place. With the fan off center in these units it can cause the air to swirl and pull oil back into the tube.

John@Reliable_10

What about the......................

heat exchanger, is it clean? Dirty heat exchanger = back pressure which can cause nozzle assy to overheat and drip oil.

Weezbo

Blast tubes don't leak.

think about it you got time.

there are causes for oil In a blast tube buh i got to say the highway emissions are not likely referring to the highway emitting combustion products buh more likely it is referring to my 63 Falcon