Armasight DARDROPBB05PAL1 Drone Pro 5x Digital Night Vision Riflescopes - Manual (Page 35)

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4.3 MAINTENANCE
4.3.1 GENERAL
The Drone PRO operator maintenance consists of operational tests, inspections for unit serviceability,
cleaning and mounting procedures, corrective actions (troubleshooting and replacement of a limited
number of parts). Maintenance instructions covered elsewhere in this manual (PMCS, troubleshooting,
etc.) are not repeated in this section.
CAUTION:
The Drone PRO is a precision electro-optical instrument and must be handled carefully at all
times to prevent damage.
CAUTION:
DO NOT dismantle the equipment.
4.3.2 CLEANING PROCEDURES
Clean the Drone PRO and optional items as follows:
1. Gently brush off any dirt from the equipment using only a clean, soft cloth.
2. Moisten the cloth with fresh water and gently wipe the external surfaces (except for optical sur-
faces).
3. Dry any wet surfaces (except for optical surfaces) with another clean, dry soft cloth.
4. Using a lens brush, carefully remove all loose dirt from optical surfaces (objective lens and eye-
piece).
5. Slightly dampen a cotton swab with ethanol and lightly and slowly wipe optical surfaces. Clean opti-
cal surfaces using circular movements, starting from the center and moving out towards the edge,
not touching the lens holder and changing the cotton swab after each circular stroke. Repeat until
the optical surface is clean.
6. Clean the battery contact surfaces and contact springs with a pencil eraser and/or alcohol and cot-
ton swabs.
CAUTION:
Thoroughly dry each item before replacing into the storage/carrying case.
4.3.3 BORE SIGHTING
Perform the Drone PRO bore sighting:
— When the Drone PRO is mounted to a weapon for the first time;
— After repair of the Drone PRO/weapon;
— As the need arises (in case of systematic inaccuracy and missing the target);
— When the Afocal Doubler is attached/replaced.
Refer to Part 3.3.2 for boresight procedure.
4.3.4 BATTERY REMOVAL AND REPLACEMENT
Refer to Part 3.1.1 for battery installation procedures.
Refer to Part 3.1.9 for IR illuminator battery installation procedure.
Replace the remote control batteries as follows:
1. Using a screwdriver, unscrew the four screws (A, Figure 4-1) that secure the cover to the bottom of