EOTech MTM Mini-Thermal Monocular - Manual (Page 58)

3-4
Battery Cap
Inspect the battery cap for dirt, sand and grime. Thoroughly
clean the battery cap and o-ring by flushing with water and
wiping with a cotton swab. Periodically lubricate the o-ring
with fluorinated grease. Replace the battery cap assembly if
the o-ring becomes cut, nicked, or dried out.
Optical Surfaces
Inspect the laser port and optical surfaces of the WTM for
foreign material. Remove any large particles or loose dirt
using air or a soft cloth. Fine cleaning should be performed
using lens tissue. Clean water, alcohol, or general purpose
window cleaner may be used to remove stubborn stains.
Avoid using excessive force as this may scratch the lenses.
Video Jack
Inspect the video jack for corrosion, dirt and damage. Gently
remove any large particles of foreign matter and clean the
contacts with alcohol and a cotton swab.
Image Adapter Cable
Inspect the Image Adapter Cable for frayed wires, loose
connectors, and any other possible damage to the cable. As
required, clean the connectors with alcohol and a cotton
swab.