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6. MAINTENANCE
The device should be kept clean avoiding dust and dirt. The
outer surfaces of the optical parts should be clean always.
WARNING: It is prohibited:
- to disassemble the scope;
- to switch on the scope without protective cap and light
filter;
- to apply exceeding force to clamp;
- to use a battery of improper type;
- to keep a battery into an unused scope for a long time.
The device is the subject of following periodic maintenance
procedure:
- clean the scope against dust, dirt and moisture;
- check out the contacts of power supply;
- wipe grease spots on optical surfaces by clean napkin; in
case of significant pollution the alcohol can be used;