Question about Broan-NuTone CV750 Central Vacuum

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Loss of suction. we have checked that there is ni blockage.

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Disconnect the incoming pipe from the vacuum power unit and turn the switch on (on the side of the unit) while you feel the bottom of the unit with your hand. If BOTH motors come on and sound normal and are producing suction you should feel the bottom of the canister flex or you should feel suction at the inlet connection.
If the bottom flexes but there is no section at the inlet there is an obstruction in the pipes witin the vacuum unit. A stiff wire with a hook bent at the end is usually sufficient for removing the dust stuck in that piping.
You can also unplug the 110v poser then remove the top cover (only 3 or 4 screws) and visually inspect the motors and piping for failures.

Posted on Mar 11, 2011

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