1. 

   HXD3D8002 Member

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   Why is there a deflating sound when the Class 37 power handle returns to the OFF position?

    

   HXD3D8002, May 26, 2023

   #1
2. 

   Fitz Well-Known Member

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   Because the controls are powered by air pressure. It's modeled correctly.

    

   Fitz, May 26, 2023

   #2

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