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Central vac toast?

Kenmore Central vac was used by kids and started smoking alot. Still good suction, but noisy and metal pieces came out of exhaust outside. Upon disassembly, found smoke was from gasket between motor/fan assembly and the canister. Metal shards loose inside suction fan portion of motor assembly. Cooling fan on motor is fine. I think metal pieces are from some casing around the fan, but I don't know how to get to the fan to check it out. Any ideas?

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Most of these motors, the fan cover is just pressed on, but getting off isn't easy and you don't want to bent it up. Maybe using a flatblade try to knock it off from the edge of it may loosen it enough to pull it off.

Posted on Mar 18, 2008

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Posted on Jan 02, 2017

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2 Answers

I accidentally vacuumed up a small plastic bag. Now I have no suction. No plastic bag is visible in the canister or the hose. What do I do?


Take my word for it, the plastic bag and / or its' remains is / are somewhere in the hose. Visibility of clear plastic in the dark environs of the interior of the hose is extremely limited if possible at all. Some hoses are corrugated on the inside especially if so on the outside. Without specificity as to brand my best first shot would be to attach the hose to the vacuum cleaners exhaust and try to blow the plastic back out the hose. The exhaust is the port from which the air comes out when everything's working as it should. Even before that, disconnect the hose from the canister, turn on the machine and see if there's any suction at the port where the hose attaches. No suction at the port eliminates the hose as the problem. If your machine will run without a bag, take the bag out and momentarily turn the machine on. Suction with no bag = bad bag. Still no suction= a trip to the vacuum service / sales store

Nov 02, 2017 | Vacuums

Tip

How to diagnose a clog in your Central Vac and how to remove it


Symptoms of a clog
Low Suction/No Suction
No suction at Inlet

Tools required
Wet/Dry Vac or vacuum with decent suction and a hose
Phillips Head Screw Driver
Metal Coat hanger (straightened out)
Flashlight

First things, first, make sure your canister is empty at the unit. I know, most people would have already checked this but I have been to a lot of client's homes and this was the issue. They were full or almost full. So just check it before you go to do anymore diagnosing. I suggest emptying it anyways, this way you can see what you clogged in your unit

Now if your machine has a utility valve on the unit turn on the manual over ride switch on and lift the utility valve and if you have suction your machine is fine, you have a clog. If you have no suction or poor suction
-Canister not attached properly
-Filter clogged
-There is a disconnect of pipe within your walls (I've seen it and it renders your system useless and is going to be expensive to repair the system)
-Your motor is going in your system (Your vacuum should sound like grinding metal and chances are it's throwing sparks and smells of burning electrical, turn the unit off immediately and unplug power cord) Your unit will need a new motor or you will need to replaced the whole unit. Sometimes can be cheaper to replace the unit.

So now back on track here, we are going to say the vacuum has great suction and is running smoothly.

Check your hose for clogs, easiest ways are to plug the hose into the utility valve and turn on the machine manually at the switch.
If you do not have a utility valve on your unit (this is where the other vacuum comes into play) plug your central vacuum hose on the end of the shop vac hose. Most hoses are standard and slip right on over the end of a shop vac's hose end (1 1/4 inch end). Turn on your shop vac and feel the suction at the end. It may not be as powerful as your CV but it should be comparable.

If the hose checks out to be free and clear we have a clogged system.

Now lets move to the inlets throwout your home, first we are going to plug our hose into the inlet that is nearest to the unit. If there is little or no suction we know there is an issue either in the distance between the nearest inlet or there is an open/broken valve.

Open/Broken valve (CV will not provide optimum suction with a open/broken valve)
-Plug the hose in and activate unit
-Check all inlets for proper seal, you will hear an annoying whistle or you will hear a gust of air from an improper inlet door closure. (Do this as quick as possible, if it is a clog you are putting strain on your motor, but if you vacuum on a regular basis chances are you know if there are whistling noises or missing pieces of an inlet. If you are missing an inlet door, replace the inlet. If all is checked out to be good, lets go back to unclogging again.

If there is suction at this inlet you know there is no clog between this inlet in the unit, try all inlets from nearest to farthest away. If you try your next inlet and have weak to no suction you found your point of a clog. This is where you will start to unclog your unit.

Take the hose end of your shop vac and insert it into your inlet. Turn the shop vac on and remove the hose quickly to create a seal and lose a seal. You should start to hear items moving through the line.

Now take your CV hose and insert it into this inlet, activate your CV and check suction if there is more suction, your slowly making progress.

Take a flashlight and look into the inlet to see if you can now see the obstruction. If you can, get your coat hanger out and go fishing. It may be easier to remove the inlet from the wall. Your basic valve is safe to remove. If you have a supervalve, do not remove, there is high current installed in the upper portion of the inlet for your power nozzle.

Repeat the Shop Vac suction and stop and the CV suction and stop until you clear your items.

This is going to take a few minutes of tugging between two vacuums. Eventually it will free if it went in, it has to come out. At the end of the day your basically playing tug of war between your Shop Vac and CV. But if all goes to plan, the clog will end up in your shop vac or in your CV unit.

Good Luck!

on May 13, 2014 | Vacuums

1 Answer

No suction when using hose attachments - motor runs and under cupboard vent works - just not able to use just the hose with attachments


does the vacuum turn on when hose plugged into wall outlet assuming your using central vac. if it does not turn on then the metal band in the hose end is possibly cracked.

Jan 03, 2015 | Vacuums

1 Answer

Wall exit range vent has outside air blowing into house


Hi, I assume you are talking about a central vac. and venting it outside. If so, you can buy a louvre that works like a dryer vent to keep the air from coming in but still allowing the vac. exhaust to vent outside. You can get one at any vac. or hardware stores. Hope this helps, Chris

Feb 21, 2011 | Vacuums

1 Answer

What do I do when there is no suction. My central vac just stopped picking up and though I emptied the machine and replaced the filter there continues to be no suction.


1. If it's an older model, the hose is likely well worn and probably has leaks at each end where it attaches to the handle and connector at the other end. If this is the case, a new hose is needed.
2. A blockage in the hose. To check the hose for blockages, detach both ends and drop a coin down one end. Lift the hose a little at a time so coin drops out the other end. If it doesn't, there's a clog. Please don't try to take it apart to remove the clog. If you can't get it out, take it to a reputable vacuum repair shop and let them.
best way to clear an obstruction is to blow it out by attaching the wall end to the exhaust of a shop vacuum, or using an air compressor.
You can try holding the wand end of the hose directly to the CV in port and turning the machine on. This provides essentially the same action as the previous method.
If neither of these work, try a combination of the two. Or using a shop vac, hold the wall end to the exhaust of the vacuum and the wand end to the in port of the shop vac. Turn shop vac on and the obstruction should come out.
Borrow a good strong shop vacuum if you need to.
If these methods fail, take it to an authorized Aerus Electrolux store and have the service tech try to clear it. Care must always be taken when trying to clear an obstuction with a long object, especially if it's pointed. I've seen many hoses that have shorted out and even caught fire due to the wiring accidentally being "nicked

3. Is there suction at the end of the hose, or is it just at the power nozzle there's none. If the hose has good suction, check the power nozzle airway. If it's blocked it can easily be cleared by pushing the clog back toward the brush with the handle of a wooden spoon, or other similar object.

Jan 15, 2011 | Electrolux Pu3650 Central System Vacuum

1 Answer

No suction


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.

Jul 28, 2010 | Broan-NuTone CV350 Performance Bagged...

1 Answer

No suction but good exhaust flow


This sounds like you have a loose pipe connection somewhere in your system. Physically check all connections. If you can't find anything suspicious, call a vac repair man that specialies in central vac repair. Joe

Aug 10, 2009 | Electrolux Centralux Vacuum

1 Answer

No suction - air blowing OUT from tube


Is the air blowing out of the pick-up tube or out of the exhaust tube on the unit? I am assuming the pick-up tube. The installer has hooked your system up to the exhaust tube on the unit. Hook up to the intake on the unit instead.

May 27, 2009 | Hoover L2310 GUV Central System Vacuum

1 Answer

No suction on lower level


http://www.geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=539794
Generic problem for all Vacuums
No suction on lower level
Posted by phil55555 on Apr 23, 2008
Nutone central vac
no suction on lower level second floor fine
ran fish tape but it does not go all the way through,
do i need to take pipe out.

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
Not @ first, try to get a central vacuum cuff and go to each and every inlet / outlet down the basement and put the cuff in the inlet – the central vac should come on and possibly might unclog the pipe, 2nd, try taking another canister type vacuum while the central vac is running and open the inlet door and try to “pull apart the clog in the pipe” – this does work upon occasion if not you can try a plumbers snake – but be careful because the walls of the pvc pipe are thin wall and you don’t want to poke a hole in the pipe or other wise you will have to replace the pipe. The absolute last resort should be to replace the pipe if all other do not work. Feel free to contact your local vacuum dealer in your area or in the yellow pages , or contact the factory @ the phone #’s listed below:
http://nutone.com --- Customer Service
NuTone Inc.
9825 Kenwood Road Suite 301
Cincinnati, OH 45242
In U.S.A. call:
1-888-336-3948 for Customer Service
1-888-336-6151 for Technical Support

In Canada call: 1-888-882-7626

Thanks, Don – The Vac Man
Go Ahead. Use Us.

Apr 23, 2008 | Vacuums

2 Answers

My Kenmore Central Vac loses suction


Do you have the same problem in all of your outlets? If you do, then there is a problem with the hose end. If it is only at one outlet, then that outlet has a problem.

Mar 13, 2008 | Vacuums

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