Armasight NAMPVS1401F9DA1 PVS14 FLAG MG Multi-Purpose Night Vision Monocular - Manual (Page 31)

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(3) Replace the battery cap and screw cap hand tight.
3.3.3. INSTALLATION OF EYECUP OR EYEGUARD
Perform the following procedure to install eyecup or eyeguard onto the monocular. Refer to Figure
3-8.
(1) Carefully press the eyecup or eyeguard over the end of the eyepiece lens.
(2) Rotate the eyecup or eyeguard into proper viewing position. Adjust for best fit. The eyecup must
seal around your eye and prevent the green glow from escaping.
3.3.4. INSTALLATION OF DEMIST SHIELD
Perform the following procedures to install the demist shield on the eyepiece lens. Refer to Figure 3-8.
CAUTION :
If the demist shield needs to be cleaned, refer to paragraph 4.3.1 for cleaning. If the demist
shield is wiped while wet or with wet lens paper, you will damage the coating.
NOTE :
If inclement operating conditions are expected to exist (e.g. significant temperature change
and high humidity), install demist shield to minimize eyepiece lens fog prior to execution of
mission.
(1) Carefully remove the eyecup or eyeguard.
(2) Carefully press the demist shield onto the eyepiece. Be careful not to smudge the eyepiece lens or
demist shield.
(3) Replace the eyecup or eyeguard (see paragraph 3.3.3).
3.3.5. INSTALLATION OF SACRIFICIAL WINDOW
Perform the following procedure to install the sacrificial window. Refer to Figure 3-8.
CAUTION :
If adverse operating conditions (dust or sand) are expected to exist, attach the sacrificial win-
dow to protect the objective lens from scratches or other damage.
BATTERY
BATTERY CAP
SACRIFICIAL
WINDOW
EYECUP
EYEGUARD
DEMIST
SHIELD
Figure 3-8. Battery, Eyecup and Eyeguard Installation