Clean The Igniter - Christie CP4220 User Manual

3. Fold a clean microfiber cloth and dampen with methanol and wipe evenly with the smooth portion of the
cloth that has no folds or creases. Do not apply pressure with your fingers. Use the solution in the cloth
to collect the dirt.
7.6

Clean the Igniter

Clean the high voltage terminal and insulator to remove accumulated dust or dirt.
7.7 Inspect and Clean the Airflow Interlocks
The CP4220 uses two airflow interlocks; a lamp blower vane switch and an extractor vane switch.
The lamp blower 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 7.1 Inspect Ventilation, on page
* 600 CFM is required in projection rooms with ambient temperature above 25
tion (above sea level) greater than 3000 feet.
7.8 Inspect the Laminar Airflow Device (LAD)
The LAD filter is attached to the light engine assembly handle in the light engine compartment. Inspect the
LAD filter every six months. If the LAD filter is dark grey, contact Christie or your dealer for replacement.
7.9 Replace the Lamp
DANGER
2) EXPLOSION HAZARD. Wear authorized protective clothing whenever the lamp door is
open and when handling the lamp. Never twist or bend the quartz lamp body. 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 the lamp to cool completely before replacing it.
1. Click
to run for at least 10 minutes to cool the lamp.
2. When the cooling fans stop, unplug the projector.
3. Wearing authorized protective safety gear, unlock and open the lamp door. If desired, release the latch
mechanism to remove the door entirely.
4. Remove the front lamp duct to reveal the cathode end (-) of the lamp.
5. Loosen set screws from the negative cathode and the positive anode lamp connectors. Make sure to apply
minimal torque and DO NOT STRESS the quartz tube. (Figure 7-1).
CP4220 User Manual
020-100690-02 Rev. 1 (01-2012)
7-1.
1) Lamp replacement must be performed by a qualified service technician only.
on the TPC Main panel to turn the lamp and main AC OFF. Allow the internal cooling fans
Section 7: Maintenance
C or eleva-
°
7-3