Maintaining Proper Cooling - Christie roadie 25k User Manual

4.2 Maintaining
Proper Cooling
Ventilation
Air Filter
Liquid Cooler
Cool the Lamp Completely
The arc lamp operates at a very high pressure that increases with
temperature. Failure to allow the lamp to sufficiently cool prior to
handling increases the potential for an explosion causing personal
injury and/or property damage. After turning the lamp off (powering
down), it is crucial that you wait at least 10 minutes before turning off
the breakers, disconnecting AC, and opening the lamp door. This
provides enough time for the internal lamp cooling fans to properly cool the lamp.
Cool completely before handling. Again, always wear Christie-approved protective
clothing!
• Never attempt to access the lamp while it is on.
• Wait at least 10 min. after lamp shut-off before powering
down, disconnecting from AC, and opening the lamp door.
SHOCK HAZARD. Disconnect projection head and ballast from
For all other precautions critical for safe removal and replacement of the lamp, refer
to 4.4. Replacing the Lamp & Filter.
The high-intensity lamp and electronics rely on a variety of cooling components to
reduce internal operating temperatures. Regular checking and maintenance of the
entire cooling system is critical to prevent overheating and sudden projector failure,
and helps to ensure reliable operation of all projector components over time.
'
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 or heat register, or within an enclosure.
'
It is recommended that you replace the air filter (located on the lamp
side of the projection head) whenever you replace the lamp—or sooner,
in dusty or dirty environments. A clogged filter reduces air flow, and can lead to
overheating and failure of the projector. Check monthly. See 4.4, Replacing the
Lamp & Filter for instructions. It is also recommended that you visually check the
laminar airflow device (LAD) located nearby. The LAD should be nearly white or
light grey in color.
'
The liquid cooler system circulates liquid to and from the DMDs in the projection
head, reducing their operating temperature to an acceptable level. Periodically check
the coolant level visible by removing the igniter grille (rear side grille adjacent to the
side input panel)—make sure the reservoir is approximately ½ full.
NOTE: A failure of the liquid cooling system will trigger an over-temperature alarm
condition, clearly indicated with status displays/lights at the rear of the projector.
FILLING THE COOLER:
installation. Fill with Christie's 50/50 mix of distilled water and ethylene glycol. Top
up as necessary, making sure not to over fill.
WARNING
WARNING
AC before opening the lamp door.
The cooler should require filling only upon projector
MAINTENANCE
Roadie 25K User's Manual
4-3