EOTech M914 (AN/PVS-14) Monocular Night Vision Device - Manual (Page 43)

3-3
3.2 INSPECTION / CLEANING
The operator should inspect the MNVD before each use and
after it has been in extreme conditions, such as prolonged
exposure to intense temperatures. The following procedures
will extend the life of the MNVD and help ensure safe
operation.
WARNING
Remove the MNVD from the weapon before
inspecting, cleaning, or performing other
maintenance functions.
WARNING
Prior to performing any inspection or maintenance
procedure, verify that batteries are not installed.
MNVD Housing
To clean the MNVD housing, rinse with water or mild soap
and water and then wipe dry with a soft cloth. Clean around
adjusters, levers, and interfaces with a cotton swab.
Battery Compartment
Inspect the battery compartment for dirt, dust, or corrosion.
Dirt or debris that cannot be shaken loose from the battery
compartment may be removed using a clean cloth or cotton
swab. Periodically lubricate the o-ring with fluorinated
grease. The o-ring should be replaced if it becomes cut,
nicked, or dried out per section 3.3, Replacing Battery
Compartment O-Ring. If necessary, clean battery contacts
with a cotton swab and isopropyl alcohol.