EOTech LWTS Light Weapon Thermal Sight - Manual (Page 63)

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2.29 UNUSUAL ENVIRONMENT / WEATHER (Continued)
Extreme Heat
The LWTS may exhibit degradation of performance or failure
to operate in temperatures above 120ºF (49ºC). Operating
the LWTS above this temperature may result in the System
Failure Indicator (see section 2.28) appearing on the display.
If due to extreme heat the System Failure Indicator appears,
immediately power down LWTS and allow it to cool below
120˚F (49˚C) before operating. Operating the LWTS for
extended periods in extremely hot temperatures or in direct
sunlight may reduce the reliability and/or service life of the
device.
Salt Air and Sea Spray
After operating in these environments, perform all of the
Inspection / Cleaning procedures described in section
3.2. To prevent corrosion, allow the soft carrying case
to dry thoroughly before placing the imaging system
inside.
Dust Storms and Sand Storms
Blowing sand and dust may damage the optical
surfaces of the LWTS. The objective lens cover should
be installed under these conditions and removed just
prior to operational use.