Determine The Projector Exhaust Cfm Value; Remove The Shroud - Christie CP4230 User Manual

Section 2: Installation and Setup

2.9.1 Determine the Projector Exhaust CFM Value

Use an airflow meter to measure the ft/min or
ft/sec at the rigid end of the open exhaust duct
that connects to the projector. Take the
measurement at the very end of the duct
without the projector connected. Use this
formula to determine the CFM value for the
projector:
Measured linear ft/min x 0.35 = CFM
Table 2.1 Airflow Requirement
Lamp Type
2.0 kW
3.0 kW
4.5 kW
6.0 kW
Add an extractor or a booster if there is insufficient airflow. Do not mount the extractor on the projector as this
may introduce some vibration into the image. NOTE: To prevent the projector from overheating or becoming
unsafe, an alarm sounds if the duct is obstructed or a fan fails. It is recommended that you regularly verify that
the exhaust is functioning correctly.
equate airflow can result in dangerous overheating of the projector.

2.10 Remove the Shroud

To access the MLM and lens, you need to remove one
shroud. You must remove the second shroud when you use
a Motorized Auxiliary Lens Mount or Real D Z.
1. Using finger pressure, push down on the locations
specified by the red arrows in the diagram.
2. Carefully slide the shroud sideways and forward away
from the MLM and lens.
3. Place the shroud cover on a clean surface to prevent
scratches.
2-10
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Min.
Airflow (CFM)
Required
450 CFM*
450 CFM*
600 CFM
600 CFM
Never disable the vane switch. Attempting to operate the projector with inad-
CP4230 User Manual
020-100621-02 Rev. 1 (01-2012)