D. Prior to Operation
For setting up the unit please choose a location with sufficient air circulation to prevent overheating.
The product must be positioned horizontally only. Do not place heavy objects on its housing.
To protect the laser unit avoid dusty surroundings. If necessary, please use a cleaning disc carefully following its operating instructions.
The unit was suddenly brought from a cold to a warm surrounding. => Please take out the disc and wait for about an hour,
until the unit has warmed up.
The unit was operated in a very humid surrounding. => Please choose a location with lower humidity.
In order to keep the disc clean, never touch the shiny surface. 
Never place a sticker or adhesive label on the disc.
Don’t expose discs to direct sunlight or other heat sources. 
Please store the discs only in their sleeves.
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