INSIGHT 4K LASER User Manual  
 
 
 
5.3.1. Procedure for Cleaning and Replacing the Air Filters 
•  Step 1 
Clean or replace the rear air filters. Clean or replace the front air filter. 
•  Step 2 
Reset the air filter usage time. 
5.3.2. Cleaning and Replacing the Rear Air Filters 
Preparation: 
Have a Phillips head screwdriver ready.
 
 
1)  Loosen the two knobs (1) holding the filter cover by turning them counterclockwise. 
Use a Phillips screwdriver if necessary. 
 
 
2)  Open the filter cover. 
 
 
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