Mh Start-up 1st Time???

Discussion in 'Lighting' started by Falcon, 16 Mar 2009.

  1. Falcon

    Falcon

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    first time i'm trying metal halides normally only used t5's and anyway i bought a 150w unit and connected some 1,5mm twin and earth cable to it...its been on for the last hour....

    but i can see the globe is getting power and glowing but the emitted light is not bright so i'm assuming its not yet warm?or is something wrong?
     
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  3. scubaninja

    scubaninja

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    it takes a while to warm up, but if your MH is brand new it will take a while to break in;) at this time it emits a lot of extra UV so be carefull
     
  4. Tony

    Tony

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    Does the light come on at all. They should take a few minutes to get to their full brightness
     
  5. Shaun

    Shaun Retired Moderator

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    How long is the cable from light to ballast.
     
  6. Falcon

    Falcon Thread Starter

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    it comes on(i can see the current flowing through it and a dim blue light coming out) but its definitely not brighter than say a 20w energy saver even!

    the cable is around two meters,is this a problem?should i use 2,5mm cable instead?

    yeah its brand new scuba,how long break in are we talkin scuba?10 min or couple hours?
     
  7. Falcon

    Falcon Thread Starter

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    from the globe to ballast well its all built in so i suppose not longer than 10-20cm....
     
  8. jacquesb

    jacquesb Retired Moderator

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    Falcon - look at your control/start gear. It usually gives you a distance in metres, of how long the maximum is for the cable between the starter, and the fitting/globe...
     
  9. Falcon

    Falcon Thread Starter

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    its a standard industrial type fitting jacques so i'm sure this design works for hundreds of people i mean its factory standard.

    maybe i should change the globe or the unit or both....hmmmm...
     
  10. jacquesb

    jacquesb Retired Moderator

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    No problems Falcon. It's just that my DIY units (Radiant brand) had a seperate starter/control unit box.... this box had a sticker on it, with a diagram, showing the length. On mine, the absolute maximum length that I could have mine, was 1.5 metres.....
     
  11. Tony

    Tony

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    It's sparking in the ball of the bulb but not igniting. Do as the other guys said but remove the bulb when cold with some tissue and clean the contacts of the bulb with some sandpaper. Put the bulb back and make sure the contacts are pressed well into the holder to make proper contact
     
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  12. Warr7207

    Warr7207

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    I would go with a thicker cable that twin flex can be dangerous when there is big current going through it
     
  13. Falcon

    Falcon Thread Starter

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    hmm i think i have the radiant but its a complete unit(i.e ballast and globe etc fit in together) and i'm using a venture globe...

    thanks for responding jacques
     
  14. Shaun

    Shaun Retired Moderator

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    Have you tried turning the bulb around, some have a "dimple". I am not talking left to right, but upside down. Sometimes the vapour settles in the "wrong" place.
     
  15. jacquesb

    jacquesb Retired Moderator

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    Good suggestion, Shaun. Falcon, anytime man.
     
  16. Falcon

    Falcon Thread Starter

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    not twin flex warr lol i'm talking about 1,5mm TWIN+EARTH same as runs in your ceiling to all your lights in your house.

    thanks tony will try that a bit later,the wholesaler recommended the same thing.
     
  17. Shaun

    Shaun Retired Moderator

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    Don't worry about the wire, it will be fine for that very short run, just some guys have 1 or 2m of cable.
     
  18. Shaun

    Shaun Retired Moderator

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    1 venture bulb did the same with me, give it a "turn". that worked for me.
     
  19. scubaninja

    scubaninja

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    well, a couple of hours. not sure exactly:) but the advice given by hennie to Amalick was run it for 24 hours(cant remember if it was 24 hours straight or not) out of the tank so the Uv doesnt hurt your corals and then put it back over the tank. As far as it possibly not working properly despite the break in period i think the others have covered the bases:thumbup:
     
  20. Falcon

    Falcon Thread Starter

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    Thanks shuan will be home soon and will try it.
     
  21. Shaun

    Shaun Retired Moderator

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