Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Electrode Assembly Leak?

grocha88
grocha88 Member Posts: 1
in Oil Heating

I’m a first year apprentice and have come across this a couple times when performing a cleaning on oil fired burners. It looks like either a slow leak or somehow the unburnt fuel is getting dragged backwards? I’m not sure what this is a sign of, any thoughts? Thank you!

IMG_9450.jpeg
IMG_9453.jpeg
IMG_9452.jpeg
IMG_9451.jpeg

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,588
    edited December 17

    They seldom come out completly spotless. If the electrode assembly is getting dirty it is usually a draft issue or a rough start.

    Make sure the draft over the fire is ok and that the boiler is clean and the chimney draft is ok. If there is an ignition problem or delayed ignition that can blow oil back over the nozzle and the electrodes.

    Also make sure the nozzle is tight and the adapter is in good shape. Some overtighten the nozzle which is NG.

    grocha88
  • SuperTech
    SuperTech Member Posts: 2,458

    That really doesn't look too bad in my opinion. As Ed mentioned, make sure draft is set correctly. If it's not the flame retention head will become fouled up with carbon as well. Obviously make sure the electrodes are in good condition and the igniter or ignition transformer is functioning correctly. You could also be seeing the nozzle drip after the burner shuts down and the hot chamber overheats the nozzle and causes it to drip. A 15-30 second post purge on the primary control will usually take care of that.

    grocha88
  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,526
    edited December 18

    The rectangular block that is secured to the high pressure fuel line by that tab that is also securing the electrodes in place is a nozzle line heater, If any small amount of fuel happens to lay on that heater, it will boil off and cause that charred build up. Any other nozzle line that does not have a heater attached will get the same coating of oil over time but it will not be cooked away from a heater that is not there.

    I think you just need to wire brush that ceramic heater block a little better, But you need to be careful not to damage the ceramic block or you will need to replace it.

    https://www.supplyhouse.com/Carlin-Combustion-Technology-66795S-Nozzle-Line-Heater-Kit-for-EZ-1-EZ-2-EZ-3-99FRD-100CRD-Burners

    Carlin added that heater for some of the burners that are more sensitive to cold oil.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

    grocha88SuperTech

Categories