Vari Lite VL2000, Руководство по обслуживанию

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VARI ❋ LITE ® - VL2000™ S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
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Step 3. Slide backcap away from head assembly (it will remain attached by tether).
Figure 2-3: Lamp Replacement
CAUTION: Wear cotton gloves or other covering while servicing lamp. Touching
lamp glass with bare fingers will leave oil and cause the lamp to explode or burn out
early. If touched, use alcohol to thoroughly clean glass.
Step 4. Remove lamp by pulling straight out of socket.
Step 5. Install new lamp, pressing firmly into socket.
Step 6. Align guide rods in guide holes and slide backcap into head assembly. Re-
tighten captive knob.
Step 7. Align lamp. (Refer to next procedure.)
Align Lamp for Peaked or Flat Field
The design of the VL2201 optical system is based on a peaked field. A peaked field is
one where the intensity of the beam is greater at the center of the beam than at the
perimeter. At this position, the center beam intensity is maximized. The beam fall off
ratio can be reduced by repositioning the lamp by adjusting the focus knob. This
results in a beam with a flattened appearance.
The design of the VL2202 optical system is based on a flat field. A flat field is one
where there is no detectable hot spot.
After a new lamp is installed, it will be necessary to align the lamp to optimize the
beam for either the peaked or flat field (depending on the luminaire model). Knobs
located at the luminaire’s backcap will allow adjustment.
Head Assembly
Guide Rod
Lamp
Captive Knob
Backcap Assembly