Liquid Cooling System; Filling The Coolant Reservoir; Exhaust Duct And Lamp Fan Interlocks - Christie CP4230 Service Manual

2.7.4 Liquid Cooling System

Check: Every 6 months
The liquid cooling system circulates liquid to and from the DMD heatsinks in the CP4230 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.

2.7.5 Filling the Coolant Reservoir

glycol. Use caution when handling. DO NOT ingest.
reservoir.
projector. 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 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. DO NOT
OVERFILL.
In the event coolant drips on any electronics or other nearby components, blot the
affected area using a dust-free optical grade tissue. It is recommended you blot a few times,
discard the tissue and use a new tissue to blot the area again. Keep repeating this cycle until
the coolant is cleaned up. Then lightly moisten a new tissue with de-ionized water and blot
the area again. Use a dry tissue to dry the area off. Repeatedly using clean tissue and blotting
the area should successfully remove coolant spills.

2.7.6 Exhaust Duct and Lamp Fan Interlocks

Check: Every 6 months
Check and maintain the projector's two vane switches every 6 months. One is located in the exhaust duct and
the other is near the lamp blower. Check operation as follows:
1. Turn power to the projector ON, but do not power up the lamp.
2. Turn OFF the extractor fan.
3. Confirm that the extractor vane switch has indicated an extractor status light error on the TPC Status page.
Turn the extractor fan back ON.
4. Block the air intake at the rear of the projector.
5. Confirm that the lamp blower vane switch has indicated a "blower error". Clear the air intake to correct the
issue.
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.
CP4230 Service Manual
020-100622-04 Rev. 1 (05-2016)
HAZARDOUS SUBSTANCE! The coolant used in this product contains ethylene
DO NOT use coolants other than that specified by Christie with your
Section 2: Service Guidelines
Wash hands after servicing the coolant
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