Newcon Optik nvs 4 Manual Do Utilizador

10 

 
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;