4 maintenance – Armasight NRWVULCAN439DB1 Vulcan 4.5X Gen3 Bravo MG - Compact Professional 4.5x Night Vision Rifle Scope User Manual
Page 33
33
E. Chicken Wire
Chicken wire is an irregular pattern of dark thin lines that can appear in the field of view, either through-
out the image area or in sections of the image area (see Figure 4-5). In the worst-case scenario, these
lines will form hexagonal or square, wave-shaped lines. No action is required if this condition is present,
unless it interferes with the user’s ability to view the image or their ability to perform missions.
FIGURE 4-5. CHICKEN WIRE
4.4 MAINTENANCE
4.4.1 GENERAL
The section regarding Vulcan operator maintenance consists of operational tests, inspections for unit
serviceability, cleaning and mounting procedures, and replacement instructions for a limited number
of parts. Maintenance instructions covered elsewhere in this manual (PMCS, troubleshooting, etc.) are
not repeated in this section.
CAUTION:
The Vulcan is a precision electron-optical instrument, and must be handled carefully at all times
to prevent damage to the device’s body and mechanisms.
4.4.2 CLEANING PROCEDURES
CAUTION:
Thoroughly dry each item before placing them into the storage case.
Clean the Vulcan as follows:
1. Gently brush off any dirt from the unit’s body using a clean, soft cloth.
2. Moisten the cloth with fresh water and gently wipe external surfaces (except for glass surfaces).
3. Dry any wet surfaces (except for glass surfaces) with another clean, soft, dry cloth.
4. Using a lens brush, carefully remove all loose dirt from the glass surfaces.
5. Slightly dampen a cotton swab with ethanol. Gently and slowly wipe the lenses (including the pho-
toreceiver and the pivotal focusing lens). Without touching the lens holders, clean the glass surfaces
in circular movements, beginning in the center and moving out towards the edge. Change the cot-
ton swab after each circular stroke. Repeat until the glass surfaces are clean.
6. Clean the battery contact surfaces and contact springs with a pencil eraser and/ or alcohol-damp-
ened cotton swabs.
Clean optional devices with a soft brush (cloth), soap, and water as required.