Question about Broan-NuTone CV353 Central Vacuum

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CENTRAL VACUUM SYSTEM

Hi. I have a Nutone CV353 Central Vacuum System. There is no suction even from the inlet on the motorr itself. The motor goes on with no problem. The bag is not full. The filter is clean. What else could be leading to a lack of suction without the hose being involved? Help!!!

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  • Anonymous Jan 18, 2009

    My haden central vac goes on, I hear the motor running and there is suction from one part of the hose but very limited and there is no suction at the end of the hose where it meets the floor. I have looked at the bag which is no where near full. I can't figure out how to repair this. Are there places in Oakville where I can find someone to come to my home to look at this?

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Disconnect the inlet piping from the unit and check the suction there. Be sure that the utility inlet on the unit is closed. If you have good suction, you have an open/broken pipe somewhere, or possible an inlet valve or vacpan that is not sealing when closed. The easiest way to find it would be to install your tubing back into the inlet of the unit, turn the unit on, and walk around the house listening for air leaks. Good Luck!!

Posted on Jan 01, 2009

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2 Answers

Central vac not sucking


Check for a plugged tube in the wall by listening to the motor when it's running. If it sounds like it's running too fast then there's an obstruction. If it sounds ok, then there's a disconnected tube somewhere in the system.

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You may have a stuck relay or one of your access port switches may be bad. According to the owners manual: "A complete check of all Wall Inlet and Power Unit low voltage control lead connections (external yellow leads). Turn system off by removing fuse or tripping circuit breaker at
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Use the guide at builtinvacuum.com/flowchrt.html to find the issue and solution. Most likely you need to test it without any filter and be sure the bottom of the unit is attached :) To get access to the motors you need to unbolt the very top sides.

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http://www.centralvacuumstores.com/cvs/trouble_help.php#runs_continuously

Here is a link to help you find a local dealer:
http://dealer.nutone.com/DealerLocator.aspx?unit_id=002&cata_id=8

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1 Answer

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The first thing to do is to disconnect the pipe coming into the unit. If there is suction there than you probably have a break in the line. If there is no suction when you disconnect the pipe coming into the unit than it is most likely the motor gasket. This gasket can sometimes get sucked into the motor causing problems. Remove the lid to the central vacuum, than disconnect the motor, you should be able to tell if maybe the gasket has been off center or if it has been sucked up in the motor.

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most of those systems are plumbed with PVC, but some do use flex throughout the home...
If yours is PVC, visit your nutone dealer and get a new outlet/elbow.
Trim the old elbow off with a drywall saw or other small saw (if you have a sawsall, that is fine) and glue the new one in
if it is flex tubing, it's easier; the elbow threads on. just be sure to hold the tubing so it doesn't drop down,

Jan 02, 2009 | Broan-NuTone CV353 Central Vacuum

1 Answer

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If it is a NuTone system you should have a filter and a BAG in the tank. just got to their site and look up your model number to see what you need.

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1 Answer

Nutone 353 central vacuum....all of a sudden, poor suction at all house outlets.. Checked hoses and pipes for obstruction...none found


I think this unit has a utility valve on the front. If so, do you have good suction at this valve? If not, disconnect the inlet piping and check the suction directly from the inlet. Make sure the utility valve is closed while checking the suction on the inlet. If you have good suction, you have an open pipe or valve somewhere in the house. If you have any vacpans, check these first. Next, turn the unit on and walk through the house and listen for air whistling. If you do not have good suction from the inlet at the unit with the utility valve closed, replace your bag and look for a secondary filter that may be plugged. Good Luck!

Nov 26, 2008 | Broan-NuTone CV353 Central Vacuum

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