Optika Italy B-380 Serie Manuel D'instructions page 30

14.4 Centering the HBO bulb (B-383FL)
• Wait around 5 minutes before proceeding with this
operation to allow the bulb to warm up properly.
1. Turn on the mercury bulb by operating the power supply
switch ①. (Fig. 42)
2. Turn the nosepiece into an empty position (without objectives)
and remove the protective cap, or remove an objective from
the nosepiece.
3. Place a piece of white paper on the stage and insert the
fluorescent cube "B" into the optical path.
4. Acting on the focus screw of the collector lens
centering screws ③ try to obtain the light spot of the bulb's
arc. (Fig. 43-44)
5. Using the focus screw of the collector lens ②, put the image
of the arc projected onto the paper. The light spot must be
brighter and sharper as possible. (Fig. 45)
②
and on the
②
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①
F ig. 42 F ig. 42
③
③
F ig. 43 F ig. 43
F ig. 44 F ig. 44
F ig. 45 F ig. 45