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4.3. MAINTENANCE PROCEDURES
4.3.1. NVG-7 MAINTENANCE
the NVG-7 maintenance consists of external inspection of its com-
ponents for serviceability, cleaning and installation of the standard
and optional accessories. maintenance instructions covered else-
where in this manual (pmCS, troubleshooting, etc.) are not repeated
in this section.
CAUTION
The NVG-7 is a precision electron-optical instrument and must be
handled carefully at all times to prevent damage.
4.3.2. ClEANING PROCEDURES
1. Gently brush off any dirt from the goggles body using only a clean
soft cloth.
2. moisten the cloth with fresh water and gently wipe the external
surfaces (except lenses).
3. Dry any wet surfaces (except lenses) with another dry and clean
soft cloth.
4. Using lens brush, carefully remove all loose dirt from the lenses.
5. Slightly dampen a cotton swab with ethanol and lightly and slowly
wipe the lenses. Clean the glass surfaces by circular movements
from the centre to the edge, not touching the lens holder and
changing cotton swab after each circular stroke. repeat this step
until the glass surfaces are clean.
CAUTION
Dry thoroughly each item before replacing into the storage case.
4-6
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