Tom,
This page from Finland has a bit of information on the ES 50 pump, which may or
may not be similar to yours.
http://personal.inet.fi/koti/kristian.ukkonen/es50/es50_overhaul.html
My colleagues all are familiar with the Welch pumps, not Edwards. One fellow
says that parts may be available from an outfit in New Mexico.
--David Forbes
On 6/8/2015 2:02 PM, Tom Harris wrote:
I couldn't find anything online on servicing a vacuum pump. I might have to
perform my generic service routine. Take the thing apart, clean everything,
replace anything worn, lubricate anything that moves, put back together. I
do remember from my lab days that vacuum systems use silicone grease as a
seal and lubricant and it got everywhere very quickly. What fun.
The goal is indeed to make large discharges in glass. As well as make a
vacuum cannon (look it up), the most impressive thing to do when you can
get a good vacuum. That and re-enact Joseph Wright's painting " experiment
with a bird in the air pump" I suppose.
On 09/06/2015 5:45 AM, "gregebert" <[email protected]> wrote:
I saw a few tidbits online from a google search, but no service manual.
Might be very hard to get spare parts, etc.
I was planning to experiment with a vacuum pump from Harbor Freight Tools
later this year; people have claimed it can pull down to 25 microns (yeah,
right.....) but it's definitely good enough to get a glow discharge. I plan
to see if I can get anything interesting with helium and/or argon inside a
glass beer-bottle.
Sounds a bit silly, but it shouldn't be too difficult to get a decent
seal on it, then bake-out the impurities in a modified toaster-oven. No
need for dangerous bombarding. Helium is very easy to get, and seems to
have enough spectral emission in the visible region.
Where am I going with this ? Just suppose it's possible to make a large
nixie-like tube the size of a beer-bottle. Think CD47 (saw *one* on Ebay
yesterday for $1300; apparently the seller gave up trying to find enough of
these to build a clock. Gone now.).
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