8-36 
3.    Remove the ACGO assembly.     
     
 
8.40 Disassemble the O2 Cell Calibration Valve Assembly 
8.40.1 Prepare for Disassembly 
8.40.1.1 Tools   
During parts disassembly and replacement, the following tools may be required: 
  Phillips screwdriver 
8.40.1.2 Preparations 
Before disassembly, 
  Make sure that the anesthesia machine is turned off and disconnected from the A/C power 
source. 
  Maneuver the anesthesia machine to an appropriate location and then apply the brake. 
8.40.1.3 Pre-disassembly 
1.    Refer to 8.1.4Remove the Work Surface Cover Plate FRU to remove the work surface 
cover plate. 
2.    Refer to step 1 in 8.23.2Remove the Patient Circuit Assembly to remove the patient circuit. 
3.    Refer to 8.28Disassemble the Volume Exchanger Assembly to remove the volume 
exchanger assembly. 
4.    Refer to 8.29Disassemble the VE Box Assembly to remove the VE box assembly. 
8.40.2 Remove the O2 Cell Calibration Valve Assembly 
1.    Disconnect the hose and cable from the O2 cell calibration valve assembly. 
2.    Remove the two screws with the Phillips screwdriver to remove the O2 cell calibration valve 
assembly.