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2.5.1 Ventilation
Vents and louvers in the projector covers provide ventilation, both for intake and exhaust. Never block or cover
these openings. Do not install the projector near a radiator, heat register or within an enclosure. To ensure
adequate airflow around the projector, keep a minimum clearance of 0.5m (19.69") on the left, right and rear
sides of the projector from any walls or other obstructions.
2.5.2 Light Engine Air Filter
Check: Monthly
It is recommended the air filter (located on the right side of the projector near the input connection panel) is
replaced whenever the lamp is replaced, or sooner in dusty or dirty environments. A clogged air filter reduces
air flow and can lead to overheating and failure of the projector. Check monthly by inspecting its color through
the side vent grille with a flashlight. A grey colored filter should be replaced. See
on page 5-10
for instructions.
2.5.3 Liquid Cooling (Radiator) Air Filter
Check: Monthly
Located on the left/front side of the projector there is an air filter related to the liquid cooling system. Inspect
the filter routinely and replace if it appears greyish in color. See
instructions.
2.5.4 Liquid Cooler
Check: Every 6 months
The liquid cooler system circulates liquid to and from the DMD heatsinks in the D4K25 reducing the DMD
operating temperature to an acceptable level. Check the coolant level every six months, by removing the top
projector lid. Make sure the level of coolant remains above the minimum level indicator. If the liquid cooling
system should fail, an over-temperature alarm window will display. If an over-temperature state remains for
more than one minute, the lamp will turn OFF.
2.5.5 Filling the Coolant Reservoir
Using unapproved coolant can result in projector damage and will also void projector
warranty.
Top up the coolant with the Christie approved coolant JEFFCOOL E105. Use the refill bottle (with the nozzle)
provided in the Liquid Coolant Fill Service Kit (P/N: 003-001837-XX). When refilling, use caution not to spill
or let any of the coolant drip on or near the electronics. Do not allow the level of coolant to fall below the
Minimum Fill Line. NOTE: After filling the reservoir, check the coolant hoses for kinks which may restrict
fluid flow.
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)
HAZARDOUS SUBSTANCE! The coolant used in this product contains ethylene
glycol. Use caution when handling. DO NOT ingest.
DO NOT use coolants other than that specified by Christie with your projector.
Section 2: Service Guidelines
5.5.1 Light Engine Air Filter,
5.5.2 Radiator Air Filter, on page 5-11
for
2-5
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