How to Fix a Loud Noise in a Vacuum Cleaner Motor Vacuum cleaners are noisy machines in general, but it is always possible to hear when the vacuum is making too much noise. Before you throw the machine away, first try to find the source of the noise. Shut the machine off to see if the noise was caused by a large object in the hose. Also try using other brush attachments, as broken bearings in a brush attachment will cause noise. If these troubleshooting techniques do not work, you may need to service the engine. Remove the filter and bag of the machine and make sure that they are not clogged or full of debris. Clean any filters according to the instructions for your model or replace the bag. Excessive debris will make the engine run noisily. Inspect the hose of the vacuum and remove any large debris that may be clogging the inside of the tube. Large amounts of dust, as well as stones or other hard materials that bounce, may cause a loud noise in the engine. Remove the housing that conceals the engine of your machine and inspect the fan for damage or clogging.

Remove any dirt or debris that may hinder the movement of the fan. Inspect the fan for any damage such as bent or excessively sharp blades. Replace the fan blades as needed; contact your vacuum manufacturer if the fan is damaged. The replacement part will include instructions. Tighten the fan with a ratchet if it is loose on the assembly. A loose fan will make a rattling sound as the motor revs. Wipe dirt and dust from the frame of the engine. Large quantities of dirt or dust around the motor can cause it to overheat, which can cause vibration and loud noise. Look for corrosion around the engine. If the engine is corroded, it must be replaced. Grease the bearings of the engine if you hear a grinding noise from the vacuum. Greasing is often performed through ports in the engine, or by removing the bearings. However, the actual greasing method is model-specific. Consult your owner's manual or send the vacuum to a service professional for this service. Inspect the inside of the vacuum cleaner for other worn parts or broken pieces.

Worn or broken pieces can cause loud noises to occur. Remove the broken part and order new materials from the vacuum manufacturer or take the machine in for service. Maintenance World: Maintenance and Troubleshooting of Electric Motors Lets Fix It: Vacuum Cleaner FAQ How to Fix a Loud Noise in a Vacuum Cleaner Motor. ... but it is always possible to hear when the vacuum... The Kenmore Progressive vacuum comes in two models: the upright and the canister. Both vacuums use a bag to collect dirt. If your Dyson vacuum gets very loud, it's time to address the cause of the noise. Look for blockages first and then... How to Fix a Loud Noise in a Vacuum Cleaner Motor; If your vacuum has suddenly become... If your SpotBot is making any loud noises or will not ... Robotic vacuum cleaners like the Bissell Spot Bot allow homeowners... The brushbar may make loud ratcheting or screeching noise on carpet or area rugs that aren't ... My stupid vacuum wouldn't stand...

How to Fix a Bissell Vacuum Cleaner How to Fix High Sound in Vacuum Cleaners Are Carpet Fresheners Bad for Vacuum Cleaners? How to Keep My Dog From Attacking the Vacuum Cleaner How to Quiet a Noisy Shop Vac How to Troubleshoot a Hoover WindTunnel Bagless That Is Making a Loud...Working principleThe following is adapted from How Vacuum Cleaners Work - How Stuff Works, which I think gives a pretty good overview:When you plug the vacuum cleaner in and turn it on, this is what happens:The electric current operates the motor. vacuum cleaner untuk rumahThe motor is attached to the fan, which has angled blades (like an airplane propeller).miele vacuum cleaners onlineAs the fan blades turn, they force air forward, toward the exhaust port.robot vacuum cleaner youtube

When air particles are driven forward, the density of particles (and therefore the air pressure) increases in front of the fan and decreases behind the fan.This pressure drop behind the fan is just like the pressure drop in the straw when you sip from your drink. The pressure level in the area behind the fan drops below the pressure level outside the vacuum cleaner (theambient air pressure). This creates suction, a partial vacuum, inside the vacuum cleaner. The ambient air pushes itself into the vacuum cleaner through the intake port because the air pressure inside the vacuum cleaner is lower than the pressure outside.As long as the fan is running and the passageway through the vacuum cleaner remains open, there is aconstant stream of air moving through the intake port and out the exhaust port. But how does a flowing stream of air collect the dirt and debris from your carpet? The key principle is friction.Having explained the structure of a typical vacuum cleaner (although what the diagram shows seems old-fashioned), the following is my view towards noise reduction.

Origin of noiseNow, considering the question of reducing noise, we have to first figure out where it comes from. Obviously, electric motor contributes a lot to noise production. More importantly, the air flow through the vacuum cleaner from intake port to exhaust port is the major culprit of annoying noises, which creates friction and subsequently, mechanical energy is converted to sound energy. Radiation of housing (structure-borne) exacerbates the grueling process.Overall, sound pressure level was governed by the amount of flow noise, so reducing the flow noise would allow the manufacturer to meet the overall sound pressure level goal. However, it was cautioned that reducing the broadband flow noise, without reducing the tones, would make the tones more prominent and the vacuum more unpleasant to the consumer.Mathematically, sound pressure level (Lp) is calculated from the following equation:Lp = 10log [ (p^2)/(Po^2) ]The sound level can be measured from microphones and signal transducers.

SolutionPotential solutions for reducing the tone at the fundamental frequency included sourcing a different motor/impeller, pre-qualifying the existing components by measuring their vibration, and isolating the motor/impeller from the vacuum housing. The level of the blade passage tone would potentially be reduced also by adopting any of these approaches. In addition, redesigning the impeller or adding absorption in the flow path would surely reduce the blade passage tone. With the tones reduced the manufacturer could return to the original goal of meeting a specified overall sound pressure level.There has been active strategies utilized by engineers to reduce noise production, one of which being the use of control wave. Control waves have the same amplitude and shifted phase therefore is the noise eliminated or significantly reduced. For more information, please search for ANC and EC active noise reduction levels. If I were the manufacturer perhaps more efficient conversion of electrical energy into mechanical energy of cleaning instead of dissipation through sound energy is the way out, but this belongs to the area of 'commercial secret' so I'm unable to give a detailed discourse on it.

I guess the shape and radius of the exhaust port may affect whether the flow is turbulent. One simple Physics equation for turbulent air flow calculation is the Reynolds number:Changing variables in this equation may help reduce noise.There are newer vacuum cleaners (such as those manufactured by Miele) which allows the consumer to choose the mode of operation. For instance, my vacuum cleaner allows me to switch from maximum power output to silent mode. Though it might seem a bad idea to reduce noise at the expense of power rating, this is perhaps the most practical way of doing so, as long as it does not heavily compromise your housework.Cleaning filters regularly, from my own experience, also helps a lot. By doing so one can effectively reduce vibrations at the exhaust port, hence reducing friction generated from a turbulent air flow.See also:Upright Vacuum Cleaner Noise Reduction(non-exhaustive)N.B. I am not a professional engineer so my answer is based on what I got on the Internet.You can consider this answer:Alex Watson's answer to Will there ever be a silent vacuum cleaner?