Airox Legendair Turbine Box Replacement

First, switch off the device.

Using a cloth or a sponge slightly dampened with a bactericide or germicide solution, gently clean the outside of the device.

If necessary, spray the device lightly with the germicide solution, taking account of the requirements discussed in the preliminary operations.

Put the device in a clean and open environment.

Thoroughly clean the device before beginning any work.

Open the device by removing the five attachment screws (Pl1.20) on the bottom casing side (Pl1-280). Lift off the top outer panel.

Unscrew the three attachment screws (Pl1-130) for the CPU board (Pl1-120).

Disconnect all connectors Pl1.J1.CT, Pl1.J2.CT of the turbine control board.

Extract the turbine casing (Pl1.50) from its housing and uncouple the flow rate measurement block (Pl1-260), the O2 supply pipes and the piezo solenoid valve.

Remove the four screws, washers and spacers (Pl1.70, Pl1.80, Pl1.90) in order to successfully extract the turbine control board (Pl1.60).

Disconnect the box from the turbine control board (Pl1.J6.CT).

Replace the turbine box (Pl1-50).

Replace the turbine control board (Pl1.60) on the box with four screws, washers and spacers (Pl1.70, Pl1.80, Pl1.90) (Torque 5 Nm max.).

Connect the box to the turbine control board (Pl1.J6.CT).

Couple the flow rate measurement block (Pl1-260) to the casing and connect the two O2 supply pipes and the piezo solenoid valve.

Then, reinsert the assembly into its housing. Put the cone support (Pl1-50) into place. Put the additional cone support (Pl1-220) also into place.

Reconnect all connectors (Pl1.J1.CT, Pl1.J2.CT) to the turbine control board.

Reinstall the CPU board (Pl1-120) with the three attachment screws (Pl1-130) (Torque 5 Nm max.)

Close the device again, taking all necessary precautions (see Step 2-3)