On Jul 3, 9:40 am, Islander <islan...@[EMAIL PROTECTED]
> wrote:
> We have 12 Stand 6"fresnels in our inventory. Age - 10 yrs old, same
> as the rest of our inventory. This past year I am going through GE
> BTR lamps in these like crazy. I use one specific brand from our
> supplier and never had any problems with them until 2 yrs ago when we
> relamped. They all seem to blow when doing a lamp check when first
> firing up he board. They always fail with two black marks on he side
> of the glass in the middle and the filaments are rolling around in the
> glass. No finger prints on the glass. mainly cuz I use editors
> gloves to change them.
>
> I have taken to setting the patch for these dimmers to be 95% at full
> on the channel but just blew another one the other day. I have also
> set the focus slightly in from full flood on all fixtures so they lamp
> is back from a lens a bit. Still it blows.
>
> Other thing I note these lamps are getting very hard to get in and out
> of the sockets. Hard even when they were new. The difference in the
> size of the two flanges is difficult to see when in the dark catwalk.
> My maglight helps but I don't have 3 hands. <grin>
>
> Anyone else experiencing difficulties with this.??
>
> cheers
> Marv
Instead of setting the max to 95% - you might try pre-heating the for
your dimmer check. IE set all dimmers at 5 to 10 percent before you
start your dimmer check. This warms the filament and reduces
failure. Alternatively, you can try bringing up the lamp in a three
count instead of slamming it to full.
Re dark catwalks and maglites - have you tried one of the led
headlights? I found a wonderful one at lowe's. It fits on my head,
has a white and red LED, and I can focus it where I am looking. I've
fallen in love with the thing.
John
|
