Kapro CROSSLIGHT 3D LASER GREEN Manuel D'utilisation page 12

To maintain the accuracy of your project, check the accuracy
of your laser level according to the field calibration tests
procedures.
• Charge the battery when the laser beams begin to dim.
• Wipe the aperture lens and the body of the laser level with a
clean, soft cloth. Do not use solvents.
• Although the laser level is dust and dirt resistant to a
certain degree, don't store in dusty places. Long term
exposure may damage internal moving parts.
• If the laser level is exposed to water, dry the laser level
before returning it to the carrying case to prevent corrosion
damage.
• Remove the battery if the laser level is unused for a long
period of time to prevent corrosion damage.
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MAINTENANCE