From: Jan Pietrzak (jpptprnt@gte.net)
Date: 06/21/01-10:59:13 AM Z
I guess it is time to jump into this.
Over the past 20 years of printing a teaching I have built 10 to 15 UV
boxes all from the same design (DS Lab Notes). None of the boxes have
any kind of metal reflector. All but one of the boxes worked or are
working fine. The one that did not was one that had to be shipped to its
owner. When she received it and tries to make work it didn't. She
called and we tried to figure it out. Some months late I was invited
for dinner while doing a class for UC Santa Cruz. The before dinner
tour of the house and darkroom started. I asked about the UV box with a
sad response and a pointed finger. I checked it out. It would not
light. After some serious fiddling with it, I looked at the darkroom
electrical and found the she was using a 3 wire plug adapter into and
old house box (house built in 1934). We moved the cord to a new part of
the house 3 wire grounded and the box works like a champ.
UV tubes need a kick start to get going once on they are fine. The
ground field helps with that kick start. I chain all my 'G' wires to the
next ballast and then to the 'G' wire on the plug .
When I print I turn on 1 or 2, 4ft box and leave them on all the time.
I never have a problem.
Oh the lady with the UV box wants me to come up next time and fix some
thing else.
xoxoxjpxoxox
Jan Pietrzak la/ca
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