Siemens PELTON & CRANE Light Fantastic II Installation Instructions Manual page 128

LIGHT FANTASTIC" II
LAMP REPLACEMENT
1.00 INSTRUCTIONS
1.91 Open light by pushing button and swinging reflec-
tor away from frame (Figure 1).
FIGURE 1
1.02 Rotate lamp 90° so edge can be held with fingers
(Figure 2).
FIGURE 2
1.03 Push socket back with lamp removal lever and re-
move lamp.
CAUTION: Use tissue to hold new lamp while in-
stalling. Do not touch new lamp with
bare fingers. Contamination may
shorten lamp life. If touched, clean
with alcohol and dry with clean cloth
to remove fingerprints.
1.04 Install replacement lamp with exhaust tip away
from reflector. Close reflector.
2.00 FOCUSING
NOTE: The lamp focus is factory set for an opti-
mum pattern 27" (68.6 cm) from the oral
cavity. This results in an excellent pattern
in an 18" (45.7 cm) to 36" (91.4 cm)
range from the oral cavity. The lamp may
also be refocused for an optimum pattern
at other operating distances.
2.02 Turn each screw counterclockwise equally one
turn at a time until the patterns are superimposed
as shown in Pattern B.
2.03 Inspect for optimum pattern by blocking out one
half of the light. If the pattern appears to shift,
further adjustment is required. Otherwise, focusing of
the lamp is completed.
2.04 If patterns are irregular as shown in Pattern C, turn
only one screw until the patterns are superim-
posed.
PATTERN A
fc»
PATTERNS PARTIALLY OVERLAPPED
AND ARE NOT FOCUSED FOR OPTIMUM
PATTERN. THIS PATTERN WILL "SHIFT"
WHEN PARTIALLY BLOCKED OUT.
PATTERN B
>
PATTERNS ARE SUPERIMPOSED
FOR "OPTIMUM" PATTERN.
PATTERN WILL NOT SHIFT.
PATTERN C
IRREGULAR PATTERNS. ONLY
ONE ADJUSTING SCREW
SHOULD BE TURNED.
FIGURE 3
WARNING: Do not operate light unless plastic
shields are in place. Shields pro-
vide protection in case of lamp ex-
plosion.
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