Armasight NAMPVS700133DB1 PVS7 GEN 3 Bravo Night vision goggles - Manual (Page 20)

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3.3 ASSEMBLY AND PREPARATION
3.3.1 PREPARATION FOR USE
This chapter contains information necessary to prepare the goggles for operation. This includes un-
packing, examination for damage, battery installation, sacrificial window installation, and head mount
installation and adjustments.
A. Unpacking. The following steps must be accomplished prior to each mission.
CAUTION:
Before releasing the latches on the carrying case, relieve air pressure from inside the shipping
and storage case by pressing the relief valve button located near the handle of the carrying
case.
1. Release the two latches securing the top of shipping and storage case, and open the top.
2. Check the contents of the shipping and storage case for completeness (see Figure 1-1).
3. Remove the carrying case from the shipping and storage case. Open the carrying case (Figure 1-1),
remove the PVS-7 and check contents for completeness.
4. Inspect the goggles for obvious evidence of damage to optical surfaces, body, eyecups, RESET/ OFF-
ON-IR /PULL switch, battery cap, etc. Ensure that all optical surfaces are clean and ready for use. If
necessary, clean with lens paper.
B. Installation of Batteries.
CAUTION:
To protect the image intensifier, keep the lens cap securely fitted over the objective lens when
the goggles are not in use or when performing daylight checks.
NOTE:
Operation of the PVS-7 in daylight conditions will activate the high light cut off after 70 (±30)
seconds, causing the goggles to shut down.
WARNING:
The lithium battery contains sulfur dioxide gas under pressure.
Do not heat, puncture, disassemble, short circuit, attempt to recharge or otherwise tamper
with the batteries.
Turn off the equipment if the battery compartment becomes excessively hot. If possible, wait
until the batteries have cooled before removing them.
These types of batteries have safety vents to prevent explosion. When they are venting gas,
they release a very potent smell, and you may hear the sound of gas escaping. When the safety
vents have worked correctly, the batteries will be fairly safe from bursting, but because of ex-
cessive heat still must be handled with extreme care.
If you inhale sulfur dioxide, seek medical attention immediately.
The PVS-7 will operate with either of the two battery types identified in Table 2-3. Batteries are not sup-
plied with the PVS-7 and must be purchased by the user.