Optimus 930 needle adjustment?

Discussion in 'Fettling Forum' started by _kona_, Mar 20, 2020.

  1. _kona_

    _kona_ Spain Subscriber

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    Hi, could someone tell me what the correct needle setting is. I don't know if in the closed position no gas should come out or if some gas should come out. If I put it down, it releases flames and paraffin falls without burning, and so that it does not make a flame and some light (little) I have to set the valve to 10% more or less

    and another doubt the height of the needle is only adjusted internally where the roulette?

    I don't know if what I'm asking can be fixed or if I have to buy a rebuilding kit in Fogas

    greetings and thanks
     
  2. Matti Kucer

    Matti Kucer Sweden Subscriber

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    The needle is for cleaning only, no shut off valve on this lantern.

    It is necesary to Preheat first
     
  3. Tony Press

    Tony Press Australia Subscriber

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    As Matti has said, the needle does not stop the flow of fuel.

    The method of starting the lantern is to pre-heat the vapouriser with alcohol, and then slowly pump pressure into the tank when the vapouriser is hot and there is still flame from the alcohol (if alcohol has burned out, use a match).

    The needle should be fully down for lighting the mantle and running the lantern. Up for pricking only.

    Tony

    @_kona_
    EDIT. Instructions for this lantern here: https://classicpressurelamps.com/threads/optimus-930-930a.6143/
     
    Last edited: Mar 20, 2020
  4. _kona_

    _kona_ Spain Subscriber

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    I know the way to light but the flame that makes does not make sense

    but knowing that the needle does not cut the flow it is very possible that the corrosion of time made the hole of the jet bigger, I suppose I will have to buy a new one.
    I am going to try to record a video to show it
     
  5. Tony Press

    Tony Press Australia Subscriber

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    Is your lantern burning outside the mantle?

    If so, make sure the nipple (jet) is not loose. But you might have an enlarged jet.

    Saludos

    Tony
     
  6. _kona_

    _kona_ Spain Subscriber

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    yes, many times towards fire outside the manth, disassemble the tube j and tighten as much as possible all the parts of the burner and the jet, and I tried again, now it seems to be going well, but it needs a lot of temperature, at first when lighting it makes flames

    I think the problem came from some slack in the tube

    and here are my 2 lamps on, the optimus and a petromax 827
    CE345821-99E8-4543-A8C0-BFB2E8BB3CCF.jpeg

    Chers!
     

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