Night Optics Krystal 950L Generation 2+ B/W Clip-on Sight - Manual (Page 8)

7 NIGHT VISION
Check to make sure battery cap is
present and operable. Remove battery
and inspect for corrosion, moisture or
cracks. Ensure o-ring is present and is
not dry or cracked. Battery Cap retainer is
present and clear of damage.
Cap is missing,
corroded or damaged.
O-ring is missing or
cracked. Battery Cap
retainer is missing or
damaged.
1.
2.
3.
Before/After
Before/After
Before/After
Optical Surfaces
Inspect lens for dirt, fingerprint residue,
chips, or cracks. If necessary, clean and
dry lens with water and lens tissue.
Scratches or chips
hinder vision with
device turned on, or if
cracks are present.
Inspect for cracks or damage. Scratches
and gouges are OK if Operation is not
effected.
External Surfaces Cracked or damaged.
Battery Cap/
Compartment
Item
#
Interval Procedure
Not Fully Mission
Capable if:
Location
(Item to Check/Service)
Refer to Image Intensifier Inspection to
inspect for operational defects.
Flickering, Flashing,
edge glow, or shading
is observed.
4.
5.
6.
Before/After
Before/After
Before/After
Power ON/OFF
Switch
Turn the switch from OFF to ON. Each
position should have a definite stopping
point. Inspect for broken or missing
knob.
Switch has no
definite stopping
points or knob is
broken or missing.
Check for free movement and operation
per Instruction
Variable Gain Cracked or damaged.
Viewed Image
PREVENTIVE MAINTENANCE CHECKS
OPTICS
Always clean the optics with a suitable optical cleaning cloth. Do not use detergents or
excessive moisture to clean any part of the Device.
BATTERY / BATTERY COMPARTMENT
Remove the batteries when storing the Krystal 950 for a long period of time.
MOISTURE
The Krystal 950 is waterproof however, no warranties or guarantees apply to a device
that has been submerged in water.
SALT WATER
If the unit is exposed to salt water, wipe it off with a clean damp cloth and dry thoroughly.
CAUTION
The device is a precision electro-optical instrument and must be
handled carefully. Do not scratch the external lense surfaces or
touch them with your fingers.