Preventive Maintenance Checks And Services (Pmcs); Purpose Of Pmcs; Frequency Of Performing Pmcs - ATN NVG-7 Operator's Manual

4.1. PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS)

4.1.1. PURPOSE OF PMCS

pmCS is performed daily when in use to be sure that the NVG7 is
ready at all times. procedures listed in table 4-1 are a systematic
inspection of the NVG-7 that will enable you to discover defects that
might cause the sight to fail on a mission.

4.1.2. FREqUENCY OF PERFORMING PMCS

the frequency of performing pmCS is as follows:
1. Daily when the NVG-7 is in use.
2. When it is removed from the case for any reason.
TABlE 4.1 PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR NVG7
lOCATION ITEM
SEq.
TO CHECK/
NO.
SERVICE
1 maintenance
optical
2
Surfaces
external
3
Surfaces
4-2
PROCEDURE
open carrying case, inventory
items.
previously recorded faults on
maintenance records.
GOGGlES
Inspect lenses for dirt,
fingerprint residue, chips, or
cracks. If necessary, clean
and dry lens with water and
lens tissue.
Inspect for cracks or damage.
Scratches and gouges are oK
if operation is not affected
NOT FUNCTION-
ING AT OPTIMAl
lEVEl IF
Not Current.
Fault not cor-
rected.
Scratches or
chips hinder
vision with gog-
gles turned on,
or if cracks are
present.
Cracked or dam-
aged.