11. Maintenance
2. Wipe lenses in a one single direction.
Warning: Do not wipe back and forwards across the lens s urface as this tends to grind dirt into the coating.
3. Do not leave the cleaning cloth in either an open room or lab coat poc ket, as doing so can contaminate the cloth.
4. If smears occur when cleaning lenses, replace the cloth. S mea rs are the first indication of a d irty cloth.
CAUTION: Do not use fabric softener when washing the cleaning cloth or softener sheets when drying the
cloth.
Do n ot use liquid cleaners on the cloth as doing so will contaminate the cloth.
Other lenses can also b e cleaned safely with this Torays ee
TM
cloth.
11.5 Cleaning the exterior o f the projector
How to clean the exterior of t he projector ?
1. Switch off the projector a nd unplug the projector from the m ains power net.
2. Clean the housing of the projector w ith a damp cloth. Stubborn stains may be removed with a cloth lightly dam pened with a mild
detergent solution.
11.6 Check cooling liquid level
Only for a DP2K-15C and a DP2K-20C projector.
What should be done ?
The p rojector is liquid c ooled. It is important that the liquid level is checked at regular intervals. We advise to check every 3 months.
The liquid level m ust be between m in. and max. Significant drop in liquid level indicates a m ajor leakage and requires immediate
attention.
How to check
1. Remove the side cover on the light proce ssor side, see "Removal of the s ide cover", page 70.
2. Look through the sm all window in the security cover of the light pr ocessor and check the liquid cooling level in the reservoir.
M
i
n
Ma
x
Image 11-5
Cooling liquid check
If the current liquid cooling level is som ewhere between Min and Max, then no a ction should be taken.
If the current liquid cooling level is lower than Min, than ch eck for leakage in the cooling sy stem.
R5905050 DP2K C-SERIES 10/07/2012
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