Disconnect the 1/16” silicone tube from the front ports of the turbine outlet auto-zero solenoid that goes to the main tubing harness.

Disconnect the 1/16” silicone tube from the turbine inlet auto-zero solenoid that goes to the turbine.

Disconnect the 1/16” silicone tube from the airway pressure auto-zero solenoid that goes to the exhalation valve receptacle.