Airflow Interlocks; Laminar Airflow Device (Lad); Replacing The Lamp - Christie CP2000-ZX User Manual

Section 4: Maintenance

Airflow Interlocks

The CP2000-ZX uses two airflow interlocks; a lamp fan vane switch and an extractor vane switch.
The lamp fan vane switch is located within the lamp cooling compartment. The extractor vane switch is located
just inside the top duct on the projector lid. Check and clean the switches to remove accumulated dust or dirt
that could impede movement if necessary. Within the exhaust duct connected at the top of the projector,
adequate airflow must be maintained and routed outside of the building. Inspect regularly and confirm that 1)
there are no obstructions or "kinks" within the ducting, 2) all air intake areas are unobstructed, and 3) exhaust
airflow is at least 450 CFM* (measured at the rigid end of the duct when not connected to the projector). Refer
to Section 4.2 Maintaining Proper
25 C or elevation (above sea level) greater than 3000 feet.
°

Laminar Airflow Device (LAD)

Whenever checking/replacing the air filter on the side of the projector, also visually check the small square
laminar airflow device (LAD) filter just beyond the filter opening. The LAD filter should be nearly white in
color. If it appears a dark gray color (rare) it will require replacement by a qualified technician only. Contact
Christie or your dealer.
4.4

Replacing the Lamp

2) EXPLOSION HAZARD. Wear authorized protective clothing whenever the lamp door is
open and when handling the lamp. Never apply a twisting or bending force to the quartz
lamp body. Make sure to use the correct wattage lamp supplied by Christie. 3) Ensure those
within the vicinity of the projector are also wearing protective safety clothing 4) Never
attempt to remove the lamp when it is hot. The lamp is under a great deal of pressure when
hot and may explode, causing personal injury or death and/or property damage. Allow lamp
to cool completely.
STEP 1: Turn OFF Main AC
Press POWER OFF from the CDP to turn the lamp OFF. Allow the fans to run for at least 10 minutes for
cooling.
STEP 2: Unplug the Projector
When the cooling fans stop, turn the projector's main switch OFF and unplug. Always power down and
unplug the projector prior to servicing. Allow the lamp to cool before handling.
STEP 3: Open the Lamp Door
Wearing protective clothing and face shield, unlock the lamp door and open it. If desired, release the latch
mechanism to remove the door entirely.
4-8
Cooling.
* 600 CFM is required in projection rooms with ambient temperature above
1) Lamp replacement must be performed by a qualified service technical only.
CP2000-ZX User Manual
020-100006-05 Rev. 1 (05-2009)