Appendix 
 
 
 
  
 
Page 6 
How to Service for Serial Range (Filter in inner case)  
1. Open the filter case  2. Turn it counterclockwise to pull it out. 
     Make sure to rotate the filter down completely before pulling it out of the manifold hole. 
 Change the part  (Filter) 
3. Check the Filter (Use flash) 
 1) Check for foreign substance in O-ring part 
  2) Check O-ring status(kink, damage) 
4. Check the Filter Head (Use flash) 
  1) Check for foreign substance inside the filter head 
  2) Check the condition inside the filter head(scratch, damage) 
1. If foreign substance is found or there is no other problem →  remove foreign substance and reinstall the filter 
Step2) Action 
2. If the problems are found in the filter and filter head → change the new filter 
How to reinstall the filter : See page 6 for filter replacement instructions. 
How to change the new filter : See page 6 for filter replacement instructions.