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Beckett suntec oil pump seizing up

chevy5356chevy5356 Member Posts: 14
my suntec oil pump seize up . called my nephew he directed me on how to check blower motor first then the oil pump , pump was seized up and sent me to a supply house for a new one , suntec with solenoid two line system going into top of oil tank. Installed new one and ran fine for 4 days seized up again , removed oil pump and worked it free by moving shaft back and forth on pump , put back together worked fine again for about 4 to 5 days this time seized again . I freed it up and its been 3 days now working fine . There is 3/4 of a tank of oil , new oil filter , new nozzle installed . Checked all oil lines for leaks . We are baffled , anybody out their have this problem or knows what could be causing this to happen any answers would be deeply appreciated. Thank You Gilman

Comments

  • GrallertGrallert Member Posts: 171
    That's an odd one. Does the pump make any whining noise? My first thought would be to make sure there are no restrictions in the fuel line.
  • Alan WelchAlan Welch Member Posts: 71
    Is this an underground tank ? did you check the pump strainer?
  • chevy5356chevy5356 Member Posts: 14
    No noise from pump only humming noise from blower motor that it is jammed , flip switch to off , remove oil pump and free it up runs smoothly about 4 to 5 days and pump seized again . Filters are clean , nozzle new see no restrictions . This has happened twice since i installed new pump .Now on third day working fine so far. Somebody suggested removing oil lines going into tank and there should be a sock like filter and see if this is slugged up . Will try tomorrow when it is warmer. Thank you for your concern Grallert P.S. Unit is ten years old Bryant
  • chevy5356chevy5356 Member Posts: 14
    Above ground 275 gallon tank about 15 feet from furnace
  • chevy5356chevy5356 Member Posts: 14
    I have not checked the new pump strainer , will do so tomorrow.
  • Robert O'BrienRobert O'Brien Member Posts: 2,949

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  • Robert O'BrienRobert O'Brien Member Posts: 2,949
    It's either that or water, nothing wrong with multiple pumps.
    To learn more about this professional, click here to visit their ad in Find A Contractor.
  • HVACNUTHVACNUT Member Posts: 833
    Did you install the bypass plug for 2 pipe operation?
  • newagedawnnewagedawn Member Posts: 320
    can you show a pic of the burner, sometimes if the motor is old it seizes up and makes it look like the oil pump, had one like that last week
  • chevy5356chevy5356 Member Posts: 14
    Yes i installed the bypass plug. I have a Beckett PSC Burner motor 1/7 HP 3450 RPM , the part # on it is 21805R and model # is 707502 . I will have to wait for my grandson to come home from school to take pictures and send them not sure how to do it , not really computer smart on how to do this . My other question is when i remove blower motor and turn on without oil pump hooked up it spins fine and oil pump is hard to turn by hand with coupler is this because it is under pressue and what your saying is my blower motor could have a bad spot on it or heats up after time . I want to thank everybody who responds to my posts , senior on fixed income. Techs in my area want 110.00 dollars an hour just to look at it. Thanks Again Gilman
  • Alan WelchAlan Welch Member Posts: 71
    Why do you have a 2 pipe system, there really isn't a need with an oil tank 15 feet away. ?
  • chevy5356chevy5356 Member Posts: 14
    This is the way it was piped when we purchased home 9 years ago.
  • Jamie HallJamie Hall Member Posts: 7,056
    I know very little about Suntec pumps. Indeed, I don't play with burners at all. That said...

    I do know some about diesel engines, and I have had very similar types of problems with diesel high pressure pumps and injectors using certain types and ages of diesel fuel. So -- I'm going to ask: how old is the fuel in your tank? And is it biofuel or blended, or is it pure low sulphur or ultra low sulphur diesel? I ask because both old fuel and biofuel or blended fuel have jammed injectors and high pressure pumps on some of my equipment in the past. Can always be freed, and won't jam on lsd or ulsd, but put them back on the blended stuff and after a couple of days... not so happy.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-McClain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • captaincocaptainco Member Posts: 310
    Get rid of the return line and by-pass plug. It was wrong in the beginning and it is wrong now. Should minimize if not eliminate problem.
  • chevy5356chevy5356 Member Posts: 14
    The oil delivery was in September of 2017 , 150 gallons . I have used the same oil company for last 11 years , No. 2 home heating oil . Never have had a problem with there fuel .
  • EBEBRATT-EdEBEBRATT-Ed Member Posts: 2,852
    As usual everyone is harping about two pipe system that has nothing to do with the problem at hand.

    I would contact the fuel supplier and find out about oil treatment.

    Maybe someone from Suntec could respond. You may be able to contact Suntec through the supply house you bought the pump at
  • HVACNUTHVACNUT Member Posts: 833
    Are you absolutely sure it's the fuel pump? The shaft will not spin free like on the burner motor. It takes a little effort.
    Ask if your grandson can post pics of the boiler or furnace and burner.
    What make and model boiler or furnace?
    What make and model burner?
    Some manufacturers spec a specific pump pressure depending on application. A suntec A pump comes factory set at 100 psi.
    FYI, there's no, or shouldn't be any sock type filter inside the tank.
  • chevy5356chevy5356 Member Posts: 14
  • chevy5356chevy5356 Member Posts: 14
    Thanks HVACNUT for all your information . What happened when calling for heat , i could hear blower motor humming and pushed switch to off , then i would disconnect oil line to nozzle and pull oil pump out turn shaft of oil pump back and forth and would free up and spin but not as easy as the burner motor if that helps . I called oil company that delivers oil and they gave me Hercules fuel oil sludge and fuel treatment , that was on Monday morning and this is day 4 still running smooth as of 8pm Tuesday 12/5/17 . My thanks to all that responds.
  • HVACNUTHVACNUT Member Posts: 833
    edited December 6
    Look on the white part of the burner housing near the nozzle line, above the pump. Is there a sticker there stating pump pressure? That's not the cause of your troubles but it will affect proper combustion if its supposed to be more than 100 psi.
    Regardless, you might want to call a qualified pro to do an annual tune up and a combustion analysis.
  • newagedawnnewagedawn Member Posts: 320
    are you sure you put the return pipe in the side it goes on and put the plug in? after looking at the pics not sure, there is only one port you can use, it says it right on the pump
  • Big EdBig Ed Member Posts: 896
    Teflon tape would bind up oil pumps ... Pieces of tape get in the gear set and bind them up.. Not sure if I see white tape under the pipe dope in the photos....
    I have enough experience to know , that I dont know it all
  • chevy5356chevy5356 Member Posts: 14
    I put a mark on pipe and pump where they should go it also said on pump return , also installed plug. I made sure with teflon and pipe dope did not get in there , as my nephew advised to be careful with this. He was in the HVAC business for three years and moved on to another type of work. He is pretty good with HVAC , but i think he does not have the knowledge of problems that the elders have had . Thanks to all
  • chevy5356chevy5356 Member Posts: 14
    I would like to also say this is day 5 and still running smooth . I am thinking the hercules additive has helped , because other people have said when i received the oil delivery it could have stirred thinks up after setting all summer. Hopefully this is what it was . My nephew will stop by next week to check pump pressure and all other issues if any. Again Thank You All
  • Jamie HallJamie Hall Member Posts: 7,056
    As I said... old or blended oil can do it to you. I hope the additive was enough; you may need to add more. Try to run the tank as low as you dare before you add new oil, and toss in some more Herc. while you're at it.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-McClain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • chevy5356chevy5356 Member Posts: 14
    Thank you Mr. Hall , will try this.
  • chevy5356chevy5356 Member Posts: 14
    Well this time it ran for 10 days and Sunday evening about 7: 30 , burner motor started humming , pushed switch too off, opened up oil igniter and everything was free . I thought of what Newagedawn had said it could be burner motor so i tapped on motor and sure enough it kicked back on , running fine all night and this morning , but i ordered a new motor , blower wheel and coupler . Will be in tomorrow , cost was $75. 80 . Hope this is it. Thanks again to everyone for your input.
  • Jamie HallJamie Hall Member Posts: 7,056
    Too bad about the motor -- but running against a seized up pump probably didn't do it any good at all.
    Jamie



    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.



    Hoffman Equipped System (all original except boiler), Weil-McClain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • HVACNUTHVACNUT Member Posts: 833
    If your in there doing the motor, you might as well do the coupling too. The sprockets might have shaved a bit with all that torque. You can order it specifically for your Beckett AFG so you don't have to cut down a universal coupling.
  • Big EdBig Ed Member Posts: 896
    No Teflon tape on and oil delivery system.. It's the reason your having problems with pumps binding ..
    I have enough experience to know , that I dont know it all
  • STEVEusaPASTEVEusaPA Member Posts: 1,641
    At what point are you going to bring in a professional to diagnose and properly fix this?
    steve
  • chevy5356chevy5356 Member Posts: 14
    The new motor will be installed on Thursday and after this any problems will be turned over to the Professionals . I am done with this. Thanks to all with there suggestions.
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