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3. Set the lamp power supply's three breaker switches to the off positions.
4. Disconnect the projector from AC power.
Ventilation and cooling
Vents and louvers provide ventilation, both for intake and exhaust. Do not install the projector near
a radiator, heat register, or within an enclosure. To ensure adequate airflow, keep a minimum
clearance of 50 cm (20 inches) around the projector and never block or cover the vents.
Inspect and clean the airflow interlocks
Warning! Failure to comply with the following could result in death or serious injury.
Never operate the projector with the vane switch removed or disabled.
The projector uses two airflow interlocks. Check and clean these switches to remove accumulated
dust or dirt that could impede movement.
•
Lamp blower vane switch, located within the lamp cooling compartment.
•
Extractor vane switch, located inside the top duct on the projector lid.
Inspect and clean the exhaust duct
Inspect the exhaust duct regularly and confirm that:
•
There are no obstructions or kinks within the ducting.
•
All air intake areas are unobstructed.
•
If using 2.0 or 3.0kW lamp, exhaust airflow must be at least 450 CFM (measured at the rigid
end of the duct when not connected to the projector).
600 CFM is required when ambient temperatures exceed 25°C or elevation (above sea level)
i
exceeds 3000 feet.
•
If using 4.5 or 6.0kW lamp, exhaust airflow bust be at least 600 CFM (measured at the rigid
end of the duct when not connected to the projector).
Inspect and clean the lamp blower
Notice. Failure to comply with the following may result in property damage.
Do not touch or bend the impeller blades or loosen the balancing weights.
A clogged blower impeller or motor can reduce air flow and lead to overheating and lamp failure.
1. Shut down the projector.
2. Remove the three screws securing the rear side cover.
Mirage 4K35 User Manual
020-101377-03 Rev. 1 (07-2015)
Maintenance
71
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