8-26 
3.    Refer to 8.1.3Remove the Rear Cover Plate of the Work Surface to remove the rear cover 
plate of the work surface. 
8.28.2 Remove the High-Flow O2 Supply Assembly or Auxiliary O2/Air 
Assembly 
1.    Disconnect the cables and tubes from the high-flow O2 supply assembly or auxiliary O2/air 
assembly. 
2.    Remove the four screws from the high-flow O2 supply assembly or auxiliary O2/air 
assembly with the Phillips screwdriver to remove the assembly. 
     
 
8.29 Disassemble the System Switch Assembly 
8.29.1 Prepare for Disassembly 
8.29.1.1 Tools 
During parts disassembly and replacement, the following tools may be required: 
  Phillips screwdriver 
8.29.1.2 Preparations 
Before disassembly, 
  Make sure that the anesthesia machine is turned off and disconnected from the A/C power 
source. 
  Bleed down the gas pressure inside the anesthesia machine to avoid personal injury or 
equipment damage. 
  Disconnect all pipeline and cylinder gas supplies. 
  Maneuver the anesthesia machine to an appropriate location and then apply the brake. 
8.29.1.3  Pre-disassembly 
1.    Refer to 8.1.1Open the Service Door to open the service door. 
2.    Refer to 8.1.2Remove the Auxiliary Output Assembly to remove the auxiliary output 
assembly. 
3.    Refer to 8.1.3Remove the Rear Cover Plate of the Work Surface to remove the rear cover 
plate of the work surface.