16. Maintenance
How to clean the lens?
1. Blow off dust with clean compressed air (or pressurized air cans
5
) .
2. Clean with lens cleaner together with a clean lens cleaning cloth to remove the dust and contamination. Use big wipes in one
single direction.
Warning:
Do not wipe back and forwards across the lens surface as this tends to grind dirt into the coating.
3. Use a dry lens cleaning cloth to remove left liquid or stripes. Polish with small circles.
4. If there are still
fi
ngerprints on the surface, wipe them off with lens cleaner together with a clean lens cleaning cloth. Polish again
with a dry one.
If smears occur when cleaning lenses, replace the cloth. Smears are the
fi
rst indication of a dirty cloth.
16.4 Cleaning the exterior of the projector
W
ARNING
:
Prior to start cleaning the exterior of the projector, disconnect the power to the projector mains
terminals and unplug the power cord at UPS INLET for removal of all power from the projector.
How to clean the exterior of the projector?
1. Disconnect the power to the projector mains terminals and unplug the power cord at UPS INLET for removal of all power from
the projector.
2. Clean the housing of the projector with a damp cloth. Stubborn stains may be removed with a cloth lightly dampened with a mild
detergent solution.
16.5 Checking cooling liquid level
W
ARNING
:
The procedure below may only be performed by “quali
fi
ed service technicians”.
What should be done?
The projector is liquid cooled. It is important that the liquid level is checked at regular intervals. We advise to check every 3 months.
The liquid level must be between
Min
and
Max
Signi
fi
cant drop in liquid level indicates a major leakage and requires immediate
attention.
How to check the cooling liquid level?
1. Remove the left projector cover. See "Removal of the left cover", page 312.
2. Check the cooling liquid level in the reservoir.
5. Pressurized air cans are not efficient if there is too much dust on the surface, the pressure is too low
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Summary of Contents for HDQ--2K40
Page 1: ...HDQ 2K40 User and Installation manual R5905303 09 02 03 2015 ...
Page 4: ......
Page 10: ...Table of contents 6 R5905303 HDQ 2K40 02 03 2015 ...
Page 18: ...1 Safety 14 R5905303 HDQ 2K40 02 03 2015 ...
Page 54: ...4 Input Communication 50 R5905303 HDQ 2K40 02 03 2015 ...
Page 78: ...6 Getting started 74 R5905303 HDQ 2K40 02 03 2015 ...
Page 118: ...9 Input 114 R5905303 HDQ 2K40 02 03 2015 ...
Page 148: ...10 Image 144 R5905303 HDQ 2K40 02 03 2015 ...
Page 166: ...11 Layout 162 R5905303 HDQ 2K40 02 03 2015 ...
Page 176: ...12 Lamp 172 R5905303 HDQ 2K40 02 03 2015 ...
Page 302: ...15 Service 298 R5905303 HDQ 2K40 02 03 2015 ...
Page 318: ...17 Removal and installation of the projector covers 314 R5905303 HDQ 2K40 02 03 2015 ...
Page 322: ...A Specifications 318 R5905303 HDQ 2K40 02 03 2015 ...
Page 326: ...B Standard source files 322 R5905303 HDQ 2K40 02 03 2015 ...
Page 330: ...C DMX chart 326 R5905303 HDQ 2K40 02 03 2015 ...
Page 334: ...D Environmental information 330 R5905303 HDQ 2K40 02 03 2015 ...