2.4 Bulb Installation
It is critical to properly install the bulb in the socket. Reversed polarity can
dramatically shorten the life expectancy of the particular bulb to as little as one or
two minutes followed by a very loud explosion. The writing on the base of the
bulb goes down on Mercury lamps.
When installing the bulb, the fat positive (+) end of the bulb goes into the clamp
and is tightened with the allen wrench.
Take steps to insure that the glass part of the bulb is not
touched as oils from fingers will degrade the glass and
cause pre-mature failure.
If you have any difficulty inserting a new lamp into the socket, it may be possible
that the stamping (lettering) on the bulb could be too raised. To insure a good
contact, the bulb must fit down completely into the socket. A small file can be
used to file down the letter stamping on the lamp.
Notice the larger lamp mount with the 2 set screws. This is the side that will
accept the larger (+) end of either the 100-watt Mercury lamps:
Ushio #
(-) Connection Cathode (+) Connection Anode
(HBO) USH-102DH
7.5 mm Ø
9 mm Ø
Step by Step Instructions
1. Set the lamp house panel down on a work surface such that the lamp mount
faces you.
2. Plug the gold pin of the trigger lead into high voltage receptacle, if not already
installed.
