Filling The Coolant Reservoir; Replacing The Light Engine Air Filter - Christie CP2420-Xe Service Manual

Filling the coolant reservoir

The liquid cooler system sends and receives coolant from the digital micromirror device (DMD) heat
sinks.
1. Every six months, check the coolant level by removing the top projector cover.
If the liquid cooling system fails, an overtemperature alarm window appears in the graphical
user interface. The lamp turns off if the projector enters an overtemperature state for longer
than one minute.
2. If the coolant level is below the minimum level indicator, top up the coolant with the Christie-
approved coolant Glycol 740.
Use the refill bottle (with the nozzle) provided in the Liquid Coolant Fill Service kit (P/N:
003-005179-XX). When refilling, use caution not to spill or let any of the coolant drip on or
near the electronics.
3. If coolant drips on electronics or other components, blot the affected area using a dust-free,
optical-grade tissue.
Blot a few times, discard the tissue, and use a new tissue to blot the area again. Repeat this
cycle until the coolant is removed, then lightly moisten a new tissue with de-ionized water and
blot the area again. Use a dry tissue to dry the area.
4. After filling the reservoir, check the coolant hoses for kinks that may restrict fluid flow.

Replacing the light engine air filter

The light-engine air filter is located on the right side of the projector, near the input connection panel.
A clogged air filter reduces air flow and can lead to overheating and failure of the projector.
Check the light-engine air filter monthly by inspecting its color through the side vent grille with a
flashlight. If the filter is grey, replace it. Check the radiator air filter when you replace the light-engine
air filter.
1. Push down on the two snap tabs at the top of the cover.
CP2420-Xe and CP4420-Xe Service Guide
020-103566-02 Rev. 1 (07-2022)
Copyright © 2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Maintenance and cleaning
31