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Vacuums

How to Identify and Fix Common Vacuum Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced Vacuum Technicians :

Vacuum cleaners are fairly simple machines. They need power to be transmitted to the vacuum to create a suction force that lifts debris. So, the usual areas that cause suction loss include the wrong height setting, stuck rollers, a faulty gasket, a broken vacuum belt, a filled bag, or a clogged hose.
If all you hear from the vacuum unit is a click at the when you try to start the vacuum motor from inside the house, then the motor in the unit is dead and has to be replaced. A strong odor from the shellac, which coats the copper coil windings, is an indicator that the motor is about to or has burnt out.
What is a Good Suction Power for a Vacuum Cleaner? An upright cordless vacuum cleaner should have at least 100 air watts to effectively clean a variety of floor surfaces, with the best Samsung vacuum cleaner reaching up to 210W*.
A little bit of water can do wonders for boosting a suction cup`s grip. Using warm water, rinse the whole cup so it softens it up. Shake the drops of water off the cup quickly and then put it up on the wall. That can often do the trick.
Signs of Vacuum Pump Leaks

Oil from the exhaust port running down the pump. Rumbling sounds coming from the pump. Repeated failure to reach maximum pressure for tasks. Mist or smoke coming from the exhaust section of the pump.

When the pump begins to fail, it produces less suction which helps to provide pressure to the brake master cylinder and provides additional pressure inside the brake lines. Eventually the lack of pressure in the brake system works its way up to the pedal.
A squealing or noisy belt is one of the most common symptoms of a slipping or worn serpentine belt. Squealing can be more pronounced when you`re climbing a hill and running your heater or air conditioning at the same time. Squealing can also occur after you drive over deep puddles or have an undercarriage car wash.
The two main indicators to determine vacuum power performance are water lift and airflow. The water lift is measured in mmH2O, mbar or kPa. It represents the suction force and is the reference parameter for vacuuming liquids and heavy materials. The airflow is measured in m3/h or in l/s.
Suction pressure should be kept at less than 200 mmHg in adults. It should be set at 80 mmHg to 120 mmHg in neonates. [3] The catheter size used for suction should be less than 50% of the internal diameter of the endotracheal tube.
The Best Suction Cups To Stick To

Ordinary suctions may stick again if you clean them with soap and water to remove any dust or dirt. If the plastic cup has flattened out the vacuum will be weak and the cup`s delicate seal to the surface will probably fail.

Suction cup manufacturers suggest wetting the inner perimeter of your suction cups with with warm water to make them stick better and create a tighter seal.
Acceleration Loss

When your car is leaking vacuum pressure, this adds excess air into the engine and creates an imbalance in the air and fuel mixture that is used to generate engine combustion. The excess air will cause your vehicle`s acceleration to sputter or refuse to respond when you try to pick up speed.

Broken vacuum tube or hose: The most common cause of a vacuum leak is a broken, torn or disconnected vacuum hose or tube. Because of the extreme heat generated by an internal combustion engine, these plastic and rubber tubes can deteriorate or break and cause a vacuum leak.
A: Yes. You can use regular WD40 to detect vacuum leaks. The impact it has on the engine may not be as dramatic as carb cleaner or starting fluid, but it will still work. Keep in mind that WD40 does offer carb cleaner, which is ideal for this test.
Hissing or Sucking Noises

Finally, you can hear an engine vacuum leak even if it is a minor one. Usually, when the leak isn`t too bad, you will hear hissing noises coming from the engine. This may also sound like whining sounds or whimpering sounds.

By running the pump for 20-30 minutes with the inlet blocked before connecting to your vacuum application, fewer vapors will condense in pump oil. Consider installing a manual valve in-line to simplify warm-up. Rule 3: Never block a pump outlet. Blocking the pump outlet, at best, will cause the pump to stop.
Place a dryer sheet into the dust bag of your vacuum cleaner before cleaning to improve the fragrance of the vacuum cleaner itself. In addition, you may use some orange peel or a few drops of essential oil on a piece of paper towel to remove the odor.
Problems can occur when overused or clogged filters cause the vacuum motor to overheat. This not only shortens the motor life but causes a loss of suction. In some cases, total motor burn out can occur.
Of the parts that will eventually need to be replaced in your vehicle, the serpentine belt is one of the most important. How long does a serpentine belt last? Being made of durable rubber, a serpentine belt can last anywhere from around 50,000-100,000 miles.
Unexpected noise: A squealing noise often indicates slippage between the belts and the pulleys. A chirping sound could stem from misalignment of a pulley or drive belt, as well as a host of other issues. Tensile failure: A common indicator of misalignment, tensile failure may be due to uneven cord loading.
Generally, a timing belt that goes bad makes a noticeable ticking or clicking timing belt sound that is unusual. When the timing belt starts falling the ticking or clicking sound becomes pretty audible.
If the filter bag or canister is too full, it cannot pick up any additional particles and will simply jam or the motor will overheat and shut down. So, when you suspect your unit is about 75 per cent full, empty it!
The Roborock S5 offers 2000Pa of suction power. Pa is short for Pascal Pressure Unit. The higher the number, the higher the suction power. Could you imagine what 2000Pa means? It means that the Roborock S5 has enough suction to pick up AA batteries off your floor.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Poor flow takes two cycles to brew one cup. Heater working etc. Something stuck inside inner tube? Sucking air somewhere? can it be dis assembled?
ANSWER : This problem is usually caused by calcium carbonate deposits from hard water collecting in the thermal pump mechanism. The fix is to make a 1/2 pot mixture of white vinegar and cold water (about 50:50) and run through several times. Let cool off each time, and use a clean filter to catch the deposits that are removed. Finally, run several pots of cold water to wash out the vinegar taste. Hope this helps!

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Hello,

I am looking for a wiring diagram to install a touch/dimmer switch by “Comfort” mdl # RH-934B – Darjung Ind Ltd.
It has a standard lampcord (two wires) coming from it as well as one white, one black and one yellow wire.
The original touch/dimmer switch (no identification on it) had one white, one black, one red and one yellow – no lampcord.

Thank you very much for your help!

ANSWER : The black and the white will go to the lamp ,eg,output.The yellow is the sensor wire which should be firmly attached to the metal base of the lamp

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Windtunnel first one used 6 times beater bar stopped working, took apart cleaned and belt was fine. this one had a reset switch for beater bar. had insurance at best buy so returned for a new one. used 2x beater bar not working and not dirty, no reset switch on this one., now back to the store for another? i don’t even want the same one. I wonder how many they are gonna give me. This seems to be a common occurance.
ANSWER : Sorry, you feel like that. I have rentals and 6 windtunnel’s (I prefer the bagged ones) and have never had a problem such as you have described. I think Hoover makes a great vacuum.

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My model F5906-900 — problem is the brushes have stoped working… I pulled the brush assembly out by holding the two tabs, and all seems clean and the brush assembly rotates easly… onced the brush assembly is removed. What I did notice is the female driver slot (found in the main assembly unit) that drives the brushes seems stuck..Is that normal when the machine is not hooked up to power? How can I get the brushed going??? it is a good machine, but the brush options is important too it’s ab
ANSWER : (1) Assure the Brush Control on the hood is NOT set to the OFF position.
.(2) Remove the brush assembly by pulling/unlatching it from base on each side.
.(3) Does one of the brushes have the drive pin present? It should be about ¼ inch square, and two inches long. It attaches the brushes to the drive mechanism.
.(4) Remove and clean the intake filter. One the base of the cleaner, behind the brushes, squeeze the two red abs together and pull the panel down to access the screen. Clean the hair/debris off the screen and reassemble.

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Lost Suction This is my second hoover steamvac and i am having the same problem with my new one as i did with the old one that i tossed out. I have used it about 12 times and it worked great the first 6 times… Now i’ll empty a full tank of water and only half will get sucked back up. I have tried taking it apart and cleaning and also the rubber seal had some gaps so i sealed those thinking that it was leaking air from there…can anyone help? I am so close to chucking this one and buying somet
ANSWER : Usually when there is no suction, one cause is the lid to the recovery tank is not on all of the way in the back. Also if you have that foam filter on the underneath side of the recovery tank lid, it needs to have a 1/4 in or so gap from the top of the filter to the top of the lid. Some models also have a duct that sits in front of the recovery tank, and if it isn’t there, you have no suction.

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Our Bissell Cleanview II 3576M does a great job except that the filter cup below the dirt cup gets full very fast and the dirt cup barely has anything in it. To clean the whole house, I have to empty the dirt cup and clean the filter several times. It didn’t use to work this way. It seems like something is missing, a gasket or seal maybe? I don’t think dirt, hair and debris should be going straight to the lower cup and bypassing the upper. I looked at the user guide but can’t see why it’s happen
ANSWER : Contact Bissell Direct for a parts diagram and support at
.
.http://uk.bissell.com/EmailUs.aspx
.

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Filters I have tried to find the filter that goes up inside the vacumm not the one on the front but when you take the disposal thing out the one that is up inside that, where do I find one? mine does not have one and everything clogs up in there.
ANSWER : There isn’t a filter listed in the parts list for where you feel one should be. Your owner manual would tell you if there was.

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Went to turn it on after not using for several weeks and it states not ready to brew like usual but after about four minutes it just turns off. Wont let us brew a cup or access the menu even to choose size of cup or anything. It sounds like it’s sucking up water to make cup and pokes hole in the coffee but nothing more than that. It is almost brand new
ANSWER : You have posted the fault in the wrong column with no instruction of the make/model.
.Assuming it to be new , Is it passed the warranty period before we take a look ,?
.Just lave it on for sometime and see if there is any change. perhaps the controller is thinking different with some errors , so lets try that it will stabilise with the stteady power inside.
.check this out and comment.

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