Re: Broken Burleigh WA20-VIS (I know Sam has used these before)

On May 22, 5:53 am, Sam Goldwasser <s...@xxxxxxxxxxxxxxxxxxx> wrote:
mka...@xxxxxxxxx writes:
We just got this retired WA20 wavemeter donated to our lab from Los
Alamos.
I haven't cracked the case open yet but when I plug it in I hear a
revving noise which I'm guessing is a bad belt.
Considering the cost of these machines as well as their sensitivity I
was hoping to find somebody with a tech manual I can go over before I
start this project.

Open the bottom. Most likely, you'll find the belt stretched out and
sitting on the bottom cover. Replace it with anything that fits and
you'll be good to go. :) An elastic band will work well enough to test it.

EXFO, the company that acquired Burleigh doesn't have any
documentation on their site available. I'm going to phone them but I'm
guessing I'll come up empty handed... this has been discontinued for
too long I guess.

So... before I bite the bullet and open this up I wanted to gather as
much info as I could.... has anybody here ever repaired the belt in
these things? Any tips? Alternatively, does anybody have or have
access to a tech manual?

http://repairfaq.cis.upenn.edu/Misc/Lasers/burleigh/WA-10_20.pdf

It's a wonderful machine. I just wish it was about 1/10th the size! :)

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Thanks Sam,

Opened it up and, just as your suggested, the belt was lying there.
The noise is caused by the motor running without tension.
Next problem: somebody got pump oil all over the vacuum chamber... but
I know how to correct that.

Cheers,
-Matthew
.

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