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Thread: OT: Air Blower problem

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    OT: Air Blower problem

    I am having an issue with my hot tub. I manage several pools at a hotel, and have multiple hot tubs. When the air blower is turned off there is still air getting shot out of the return jets. When the blower is off, I closed the return valve for the air line, and the bubbles stop, so I know its not a suction leak on the filter system. I can feel slight suction on the intake of the air blower pipes. There is also no power going to the blower when the timer is turned off. I have an Ametek DR505AW58M spa blower. Anyone have any ideas on what is causing the air suction when the blower is off?

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    Mod Squad Bama Rambler's Avatar
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    Re: OT: Air Blower problem

    The jets create a venturi effect and draw air in even when the blower is off. A lot of systems don't even have a blower, they just have an air inlet pipe.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: OT: Air Blower problem

    Is there any kind of valve that can be used to stop it sucking air through while the blower is off? I have another outdoor hot tub that has the same blower on it, but completely stops the air in the jets when the blower is off.

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    Mod Squad Bama Rambler's Avatar
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    Re: OT: Air Blower problem

    You could add an actuator to the return air line and have it close by relay when the blower isn't running.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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