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Airox Legendair Turbine Box Replacement

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When whirring noises persist after troubleshooting the Airox Legendair, it may be mandatory to replace the turbine box. This guide will help walk the operator step-by-step through the process of replacing the turbine box.

The repair guide information is mentioned in following sections of the user repair manual:

· Chapter 2 – 2.1.1 Cleaning the Device

· Chapter 2 – 2.4.1 Opening and Closing

· Chapter 6 – 6.1 Removal/Installation of the Turbine Box with Wiring

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  1. Airox Legendair Turbine Box Replacement, How to Properly Clean the Airox Legendair: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • First, switch off the device.

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    • Place the device in a clean and open environment.

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  3. Airox Legendair Turbine Box Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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

    • Do not allow any liquid to enter inside the device (in particular through the cooling apertures).

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    • Use a gentle air blast to clear away any remaining liquid from ventilator.

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  6. Airox Legendair Turbine Box Replacement, Turbine Box: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Make sure to turn off the ventilator before starting the repair.

    • Put the device in a clean and open environment.

    • Thoroughly clean the device before beginning any work.

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  7. Airox Legendair Turbine Box Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

    • Carefully separate the two casings to avoid tearing off the keypad connections.

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  8. Airox Legendair Turbine Box Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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  9. Airox Legendair Turbine Box Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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  10. Airox Legendair Turbine Box Replacement: crwdns2935265:010crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • 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.

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  11. Airox Legendair Turbine Box Replacement: crwdns2935265:011crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Place the turbine box (Pl1-50) in a clean and open environment

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

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  12. Airox Legendair Turbine Box Replacement: crwdns2935265:012crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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  13. Airox Legendair Turbine Box Replacement: crwdns2935265:013crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • 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.).

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  14. Airox Legendair Turbine Box Replacement: crwdns2935265:014crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Airox Legendair Turbine Box Replacement: crwdns2935265:014crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • 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.

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  15. Airox Legendair Turbine Box Replacement: crwdns2935265:015crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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  16. Airox Legendair Turbine Box Replacement: crwdns2935265:016crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • 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)

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Perform a final inspection of the device before putting back into service.

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