User's Manual

10
3
• Extreme heat (moist or dry): No special procedures required.
• Extreme cold: Extreme cold might shorten battery life.
The Rotary switch (8) can be harder to turn than at normal
temperatures.
• Salt air: No special procedures required.
• Sea spray, water, mud and snow: Ensure that the Battery cap (6)
and the Adjustment cap (2) are tightened before exposing the
sight to sea spray, mud, snow or before submerging the sight in
water. Tighten the Adjustment cap (2) by hand, and use the Tool
(11B) to tighten the Battery cap (6). Keep Lens covers (3) closed
when the sight is not being used. Clean lenses with lens paper/
cloth and wipe the sight dry as soon as possible after exposure
to water, sea spray, mud or snow.
• Dust storms and sand storms: Keep Lens covers (3) closed
when the sight is not being used.
• High altitudes: No special procedures required.
CAUTION: Never clean the lenses with ngers. Use lens paper/
cloth. If lens paper/cloth is not available:
– To clear away debris (sand, grass etc.): blow away the dirt or
rinse with clear water.
– To clean lenses: mist up the lenses or rinse with clear water
and clean them with a soft piece of cloth.
OPERATION UNDER EXTREME CONDITIONS