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8. STORAGE AND MAINTENANCE
The unit is a sophisticated precision optical instrument equipped
with laser and electronics. Therefore, it should be handled with
due care.
• Keep away from direct sunlight.
• Avoid impacts, jolts, dust, moisture, and sharp changes of
temperature.
• Do not use the device at temperatures higher than 50
o
C
(122
o
F).
• Do not touch optical surfaces by hands. Doing so may
damage the anti-reflection coating.
• Clean optical surfaces only with professional camera lens
cleaning supplies.
• Clean the exterior of the unit with a soft clean cloth.
• Keep away from heating appliances and central heating.
• All repair works must be performed by an authorized
service.
• Avoid access of direct sun light into eye-piece optics for
more then 5 sec consistently.