There are many good sites on the net that can help you with neon
manufacture. It is an industry itself.
Relating to vacuum pumps and gauges.
This application is generally very clean and HyVac has lots and lots of
pumps in use, that have been that way, for many, many years.
Contamination is not a big problem but vacuum pressure is. Many
times we are told that the pump is not pulling enough. Often this
can be traced to one of the following.
Leak in system, connection or pump inlet.
Yeah we know, new
manifold, it's the "cats meow", all new fittings.
The first thing we are going to ask is what is the pressure on your
pump. If you are making neon tubes for a living and don't have a
decent vacuum gauge, I mean one that scales 0-2000 micron then you are
like "driving at night with no lights". This is your main
business? Spend the money, get a decent gauge.
Check the pump with a decent vacuum gauge in blanked off mode.
Just the pump, at the inlet, no other goodies attached. A 1 hole
rubber stopper works real good for this. What is your
pressure. If it is .001 micron or less in 15-20 minutes chances are
the pump is right. If it is higher then maybe the pump needs a
flushing with HyVac Flushing Oil it's worth the try. Water can
sometimes be a problem. If it is real high or flushing doesn't work
you probably it probably needs some mechanical work on the inside ie... rebuild
time. Call us for an RGA.
Things to consider are the exhaust stage flutter valves or again a leak.
If you can get the pump south of 100 millitorr then you can try a little
leak testing around the intake port just for giggles.
We have them and battery operated ones too. Why battery operated
vacuum gauges? Well, when you bombard the system you don't want a
gauge hooked up with a path to ground like the typical 115V electrical
cord. We have seen and heard about plenty of fried vacuum gauges
from this process. The battery operated ones isolate the gauge and
do not provide a path to ground. Typically installing a valve
between the gauge also works but then operator error might come into play
and mistakes do happen.
Oh yeah.... and the answer is NO if you bombard a 115V gauge with high
voltage that is not covered by our warranty for the gauges or the gauge