The alignment of the lamp in the optical path can be adjusted by acting on the 3 screws placed on the back of the fixture
on the lamp assembly.
The procedure should be undertaken to avoid the possible overheating of internal components due to incorrect focusing of
the beam onto components which are not designed to be exposed to this..
Alignment procedure
Alignment is effected by manipulating the 3 adjusters,
A
,
B
and
C
simultaneously; with the lamp on and blackout shutter
dimmer and no filters placed in the optical path.
The procedure centres any hotspots (adjuster
B
) and then flattens the beam to produce and even beamspread (adjusters
A
and
C
).
When the lamp is not aligned, you will notice a brighter spot: that is the position of the lamp bulb into the beam; by acting
on the 3 screws you’ll be able to adjust the beam’s uniformity (adjuster
A
) and the position of the bright spot into the beam
(adjusters
B
and
C
), making it as centered as possible.
Vertical adjustment
Adjuster (
C
) acts on a lever and spring assembly to position the lamp vertically within the reflector. Rotate the adjuster (
B
)
until the beam produced is as required.
Horizontal adjustment
Adjuster (
B
) acts on a lever and spring assembly to position the lamp horizontally withing the reflector. Rotate the adjusters
until the beam produced is as required.
Axial adjustment
The effect of moving adjuster (
A
) is to position the lamp axially within the reflector.
Rotate the adjuster (until the beam produced is flat and even.
A
B
C
Adjust lamp position
by turning screws
A
,
B
and
C
lamp
lamp
Caution hot lamp
Isolate electrically
before re-lamping
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13. Aligning the lamp in the optical path
18
English
