My bulb (WE M90 T13 -300 lumens) has melted?

[Superhenrik]

I have Wolf-Eyes M90 T13 - 300 lumens. I bought it 2 months ago and I have recharged it 6-7 times. The problem is that the buld already has melted and has broken due to this. Is this normal? I have been very pleased with the flashlight untill this happend. Do anyone else have experiens with the same problem? How many recharges shall the buld normaly handle before it melts? Is it something I should be aware of when I use the light such as not have it on continuously too save the bulb?

Many questiens and hoping to find some answers from you experts here on CPF =)

Henrik from Sweden

 

[j3bnl]

Dont know about the bulb you mention but I know that the lumens factory 700 lumen bulb is not supposed to be run for more than about 5-10 minutes at a time due to heat. How long have you continuously ran the light at one time?

Brian

I have Wolf-Eyes M90 T13 - 300 lumens. I bought it 2 months ago and I have recharged it 6-7 times. The problem is that the buld already has melted and has broken due to this. Is this normal? I have been very pleased with the flashlight untill this happend. Do anyone else have experiens with the same problem? How many recharges shall the buld normaly handle before it melts? Is it something I should be aware of when I use the light such as not have it on continuously too save the bulb?

Many questiens and hoping to find some answers from you experts here on CPF =)

Henrik from Sweden

 

[Superhenrik]

The longest I have run it is 30-40 minutes in a row but mostly I have used it for mayby 5-10 minutes. Do you think it's too long time?

 

[j3bnl]

Not sure if thats too long or not?
Perhaps Glen C, Paul in Maryland or Mike at PTS would know. Try sending them a PM.

Brian

The longest I have run it is 30-40 minutes in a row but mostly I have used it for mayby 5-10 minutes. Do you think it's too long time?

 

[Superhenrik]

Okey thanx Brian, I will try that

 

[mdocod]

sounds like you are running the "stock" 13V M90 lamp.

Really I wouldn't expect it to melt, I'm still confused about what part of the bulb actually melted. That's a *lower* powered lamp that should, in most situations, be able to run continuously without destroying itself of the cells behind it.

 

[Superhenrik]

Yes thats right mdocod, I run the original 13V M90 lamp. I thought that the lamp could been used continuously as long as the batteries have power but now Im confused if thats okey. The store there I bought it "wolf-eyes.dk" shall send me a new bulb so thats good. Anyone who knows if it´s okey to use the flashlight continuously and maybe also know how long the original 13V bulb will last in hours?

 

[Icebreak]

Is there any coloration on the on the inside surface of the glass envelope such as violet-blue, white, yellow, brown or black?

I don't have that lamp or flashlight but generally speaking, if the seal was broken to the lamp's glass envelope and the fill gas was compromised this can cause the glass to melt.

Is it possible to post a picture of the failed lamp?

 

[Norm]

You should be able to run the standard lamp as long as the batteries hold out.
Norm

 

[Superhenrik]

I think the buld is violet-blue maybe with a little of black color too....but mostly violet-blue. I have a couple of pictures of the bulb on my harddrive but when I try to attach the images it says that I shall enter the URL. I might be stupid but I havent posted a picture here yet.....

 

[Norm]

Henrik you need to upload the picture to somewhere like
ImageShack® - Hosting before you post them here.
Norm

 

[Icebreak]

OK. The site just wants you to download your pic from a server. First you'll need to host it by uploading it. Very easy. I use photobucket. It's free.

Just speculating here but I believe the fill gas was compromised. The violet-blue you see is Tungsten Pentoxide (W2O5). The black you see is tungsten that condensed from a gaseous state. Tungsten Pentoxide forms when the fill gas is compromised before the lamp is lit. Many things could have caused this. A drop while the flashlight was off, fatigued pins or envelope at the factory, inconsistant potting etc. I don't think this should have happened to your lamp so I think it is safe to say it was faulty.

If you look at the "Race to Failure" thread you'll see photos of lamps in various states of failure. If you get your photo hosted I'd like to put it in that thread or, of course, you can. There are no failures shown where a violet-blue lamp envelope cracked so your lamp would be a great contribution to the knowledge base.

- Jeff

 

[Glen C]

Henrik, very interested to read this. I have had zero problems with the stock bulb (then again a lot of my clients use the LF EO13 in that unit). I am guessing that it is a faulty globe. Would be interested to see your pictures and someone more knowledgeable than me could assess the likely cause.

 

[Superhenrik]

Thank you guys for all tips. Now I have manage too upload a couple of pictures. I hope the quality is good enough.

 

[Superhenrik]

Now I have got the new lamp from www.wolf-eyes.dk. Its a dealer that I can recommend too people that want to buy WE in Scandinavia.

 

[Paul_in_Maryland]

Superhenrik,
I've received your Private Message about this, as well. It sounds as though the lamp was unable to release heat; as a result, it overheated. Why, I cannot say.