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Lose of prime
pgrant89
Member Posts: 1
in Oil Heating
I was wondering if some one may be able to help me out with this problem I am having with an oil burner that as been giving me problems.
So it started last year there was a crack in the oil line it was buried in concrete so I had the guy replace the tank. I ran new oil line to it 3/8 coated line the old line I could never get a solid prime out of it this one I get a solid prime but after a couple of weeks it loses the prime it's a bucket cf1400 burner gravity fed the tank is close to 20' away
So it started last year there was a crack in the oil line it was buried in concrete so I had the guy replace the tank. I ran new oil line to it 3/8 coated line the old line I could never get a solid prime out of it this one I get a solid prime but after a couple of weeks it loses the prime it's a bucket cf1400 burner gravity fed the tank is close to 20' away
0
Comments
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If it's losing it's prime you have a vacuum leak and/or possibly (but not likely) a bad pump. A vacuum leak could be anywhere in the fuel system from a bad seal at a flare fitting, bad seal at filter gasket and/or bad seal at the fuel pump cover.
Have the guy who replaced the tank and the oil line do a proper power bleed. He should also do a vacuum check on the fuel line and the fuel pump and check the pressure and cut-off for the fuel pump. Also check all fittings from the tank to the burner.
If he doesn't know how, doesn't believe in it, and/or doesn't have the right tools or skill, you should find someone else.
Hopefully when you replaced the tank you didn't dump the old oil into the new tank.steve0 -
Gravity fed?To learn more about this professional, click here to visit their ad in Find A Contractor.0
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You should absolutely never loose prime if it is gravity fed.
Need pictures0 -
This is for your home? That's a big BTU burner.
One pipe oil line off the bottom of the tank?
Same level or higher than the burner?
If so, you'd have a visible oil leak.
Is the fuel pump the "B" or "H"?
The H pump needs an external (field installed) bypass line for low fire.
With the B pump, it's done internally.
When the high fire solenoid valve closes, and pressure drops from 300 psi, that extra oil needs to be returned to the inlet.
I don't think you have a loss of prime. I think there's a problem with the pump settings, piping, or adjustments.
Call a service company that has experience with commercial burners.0
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