8. Cleaning Air Duct

8. CLEANING AIR DUCT
Overview
• Cleaning the Blower on top oft heP rojector Head
• Cleaning the Dust filters

8.1 Cleaning the Blower on top of the Projector Head

This item should be cleaned approximately every six months under normal environment conditions. Equ ip-
mentin very dusty or otherw iseco ntaminated areas may require more frequent maintenance.
CAUTION:Poweroff the projector, using the main power switch on the projector pedestal and a llow cooling
ofthe Xenon bulb lamp fo rat least 15 minute sbefore proceed ing to blower cleaning.
How to clean the Blower
The blower impellerand motor should be cleaned to prevent build up of contaminant on both the blower impeller surfaces and on
theblower motor. Properoperation of the lamp is dependent on providing adequate cooling air flow. A dirty blower may not provide
properair flow, causing the lamp and lamp house to operate at temperatures that are higher than desirable.
1. Remove the lamp house to access the blower (see "Removal of the Lamp Unit", page 23)
2. Clean loose dirt from blower impeller with vacuum cleaner. (image 8-1)
3. Use brush with hot water and suitable detergent to remove dirt that cannot be vacuumed off.
Lam
p
house remove
d
Image8-1
Exhaustblower

8.2 Cleaning the Dust filters

These items should be cleaned monthly under normal environment conditions. Equipm ent in very dusty or
otherwise contaminated areas may require more frequent maintenance.
Ifthe air filters are not regularly cleaned, the air flow inside the projector cou ldbe disru pted and cause over-
heating. Overheating may lead to the projector shutting down during operation.
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