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Installation, Operation, and Maintenance Manual # 509252 Rev R 93
Screen Assembly Removal/Replacement
1. Refer to Figure 31. Loosen the four M3 screen retaining screws, using three turns
each. Repeat, this time removing screws. Grasp the screen frame by both ends,
taking care not to twist or bend the screen itself, and remove the screen assembly.
2. To replace an existing screen or install a new one, place the screen assembly in
position.
3. Apply pressure to the frame only and press firmly into place. Install the four
screws alternately, working from side to side. Tighten each to a snug position;
finally tighten to 0.9 N-m (8 inch lbs.) using a torque-controlled screwdriver (see
Figure 37).
Lamp Bulb Removal/Replacement
1. Remove the screen as described in “Screen Assembly Removal/Replacement”
on page 93.
2. Refer to Figure 32 on page 94. Using clean cotton gloves or lint free tissue, grasp
the lamp bulb at one end between the thumb and fingers and apply firm pressure
axially toward the opposite end. When the tip of the bulb has cleared its retaining
hole and is free to move past or along the end reflector, gently slide it up and out.
CAUTION: In handling the irradiator or
screen assembly, try to avoid all direct
contact with the screen, as it punctures
easily. Do not apply pressure to the screen.
WARNING: During operation the lamb bulb and
adjacent metal surfaces become very hot. Operate
the blower for about one minute to cool hot
surfaces.