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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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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

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

Hi! My central vacuum has worked perfectly until just a couple months ago. I went to plug the vacuum in and it didn't automatically start the suction. When I clicked the switch to the right on the...


It sounds like you may have a bad hose. Plug the hose into the wall but rotate it 90 degrees from the normal position. This will bypass the switch on the hose. If you look at the wall end of your hose, you will see a metal band around it. That metal band is split into two sections. You are trying to plug in the hose so that the separation of the two pieces of metal is not lining up at the top of your inlet. If your vacuum turns on then you have a bad hose. It is possible that you have a bad switch in the hose, but it is more likely that you have a bad hose.

If your vacuum does not turn on, then you may have a break in your low voltage wire somewhere. You can check to make sure it didn't get disconnected at the unit. If the wire is connected then try to cross the low voltage wire from the relay at the unit with a small screw driver. If the unit does not turn on you have a bad relay.

If it is the relay, AirVac does not provide them. You would need to consider buying a new unit.

Jul 17, 2011 | M&S Systems AirVac AVP1200 Platinum Series...

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...

2 Answers

I sucked up some toilet paper in my central vac, and not it has almost no suction. How do I remove the block?


Toilet paper shouldn't clog a central vacuum system. There was probably already something in there that caught the toilet paper and made it worse. Here is a good resource that might help:

How to unclog a central vacuum system

Nov 06, 2009 | M&S Systems AirVac AVP1200 Platinum Series...

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

Troubleshoot a problem with central vac - not in the vac hose


The only thing you can use really is a plumbers snake.
Not sure if thats what its called in the States. Its a long flexible metal spiral spring that plumbers use to clear blocked drains

Rob in the UK

Mar 07, 2009 | M&S Systems AirVac AVP1200 Platinum Series...

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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