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6.1. pREVENTIVE MAINTENANCE
A. pURpOSE OF pMCS
pMCS is performed daily when in use to be sure that the NVM-14 is
ready at all times. procedures listed in table 6.1 are a syste-matic
inspection of the NVM-14 that will enable you to discover defects
that might cause the sight to fail on a mission.
b. FREqUENCY OF pERFORMINg pMCS
the frequency of performing pMCS is as follows:
1. Daily when the NVM-14 is in use.
2. When it is removed from the case for any reason.
TABLe 6.1. PReVeNTIVe MAINTeNANCe CheCKS AND SeRVICeS FOR
lOCATION ITEM
ITEM
TO CheCK/SeR-
NO.
VICE
1
Maintenance
MONOCUlAR
optical
2
Surfaces
external
3
Surfaces
6-2
ATN NVM-14
pROCEdURE
open carrying case, inventory
items.
previously recorded faults on
maintenance records.
Inspect lens 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
corrected.
Scratches or
chips hinder
vision with mon-
ocular turned
on, or if cracks
are present.
Cracked or
damaged.
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