11-11 
 
  To disassemble the HEPA filter assembly and air intake dust filter: 
1.  Pull the two snaps on the main unit air inlet grilleto remove the grille. 
2.  Pull the snap on the HEPA filter to take it out. If it is necessary to remove the air intake 
dust filter, pinch the dust filter with two fingers and take it out. 
 
  To install the HEPA filter assembly and air intake dust filter: 
1.  Align the HEPA filter with the corresponding slot, and push in the direction the HEPA 
filter is installed.   
2.  Fasten the snap of the HEPA filter. 
3.  Check the snap on the HEPA filter and make sure it is fastened in place. 
4.  Install the main unit air inlet grille. 
 
NOTE 
  Install the specified HEPA filter and air intake dust filter. 
 
CAUTION 
  Do not run the ventilator if the ventilator is not equipped with HEPA filter to avoid 
contaminating the ventilator inspiration port and patient tubing.