Maintenance And Cleaning; Exhaust Duct And Lamp Fan Interlocks; Electrical; Optical - Christie CP2000 User Manual

MAINTENANCE
Exhaust Duct 
& Lamp Fan Interlocks
6.3 Maintenance
and Cleaning
Electrical 
Optical 
6-4
If the liquid cooling system should fail, it will trigger an over-temperature alarm
window.
FILLING THE COOLER:
The cooler should require filling only upon projector
installation (see 2.1, Assembly and Connection of Components). Fill with Christie's
50/50 mix of distilled water and ethylene glycol. Top up as necessary, watching the
gauge closely.
IMPORTANT: Whenever coolant has been added or replaced, check for a possible
airlock upon the next projector power-up. Refer back to Figure 2.32.
NOTE: See 3.1, Projector Basics for all cooler operating details.
Check/maintain both vane switches—one in the exhaust duct and one near the lamp
fan—at least every 6 months. Check operation as follows:
3. Turn on projector (lamp is not needed).
4. Turn off extractor fan.
5. Confirm that the TPC displays an alarm window indicating that the extractor fan
vane switch has failed. Turn fan back on to correct.
6. Block air intake at rear corner of projector head on the operator's side.
7. Confirm that the TPC displays an alarm window indicating that the lamp fan
vane switch has failed. Clear air intake to correct.
Maintain vane switches as described in 6.3, Maintenance and Cleaning.
NOTE: If the exhaust duct becomes significantly blocked—or if a fan fails—the
projector's airflow sensor should trigger a shutdown before the projector becomes
overheated or unsafe. Regardless, check the airflow periodically.
To help ensure optimized performance and reliability, regularly check electrical,
optical and other components as described below.
SHOCK HAZARD. Disconnect from AC at BOTH wall breakers.
Do the following every 60 days or 500 hours (always disconnecting from AC first):
•
Check the contact surfaces of positive (anode) and cathode (negative)
connections for cleanliness. Clean electrical contact surfaces as necessary to
prevent contact resistance from scorching connectors.
•
Verify that all electrical and lamp connections are tight.
Unnecessary cleaning of optics can be more harmful than helpful, increasing the risk
of degrading delicate coatings and surfaces. In this projector, check only the lens and
lamp reflector—maintenance of other optical components requires a qualified service
technician. Check these components periodically in a clean, dust-free environment
using a high-intensity light source or flashlight. Clean them only when dust, dirt, oil
or other marks are obvious. Never touch an optical surface with your bare hand—
always wear latex lab gloves.
WARNING
LIT MAN USR CP2000
020-100032-04 Rev. 1 (03/14)