Question about Broan-NuTone CV353 Central Vacuum
Detach the vac itself from low voltage thin wiring leading to the house. With the vac plugged into power, try the manual switch and then try shorting across the low voltage exterior terminals with a rubber gripped set of pliers.
If you can hear a clicking inside, this is the vac's relay trying to start the motor. If the vac is more than 5 years old , or used more than 2 hours a week, you may need new carbon brushes, or a motor overhaul or replacement depending on wear. Carbon brushes are specific to the motor model # inside the vac, most often an AMTEK Lamb motor.
If you need brushes, the motors comutator should also be inspected for excess,wear, like gap ing between its conatct segments and "apple core" shaped wear
You you have a meter and can test for continuity across the motor leads, do so and post back.
If you don't have a meter, you will likely want to lift the vac off the wall after these checks and take to a repair shop, saving $$$$ for a house call...
Posted on Oct 07, 2009
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Posted on Jan 02, 2017
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