Vacuums
How to Identify and Fix Common Vacuum Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced Vacuum Technicians :
The most common cause of loss of suction is that the filters have become blocked. They may require cleaning or replacing. Another cause could be that the vacuum cleaner hose is blocked.
The most common cause of vacuum cleaner not picking up dirt properly is clogged air filter. Remove the filter and either clean or replace it as needed.
Low compression, an intake leak or tight valves also can cause low vacuum at idle. If the vacuum reading fluctuates within the normal range-the gauge needle bounces around a lot-uneven compression (broken rings or leaking valves or head gasket in one or two cylinders) is a likely culprit.
Clog located in the vacuum hose
Turn the unit on and feel the suction at the end of the hose handle. If there is no or low suction, then the clog is in the hose. You can remove the clog by running a long, stiff object through the hose, such as a butter knife, starting at the wall end.
One of the easiest ways to increase vacuum cleaner suction is to empty the dust bag or container. Dust containers need to have enough space for airflow, otherwise, they could get clogged and have less suction power. Regularly check your dust compartment and empty or change it when it`s already 70-80% full.
The suction power is to be measured at the end of the tube of a complete vacuum cleaner (i.e. with tube, hose and filters – but without nozzle). Some manufacturers show the results from measurements made at the suction of the actual vacuum cleaner.
The suction motor creates vacuum pressure and suction by rotating a motor fan. The impeller rotates at an incredibly high speed of about 30,000 to 35,000 RPM. A suction motor`s power is measured by multiplying the rate of air flow and the vacuum pressure, which induces air flow from the brush through the hose.
Manifold vacuum, or engine vacuum in an internal combustion engine is the difference in air pressure between the engine`s intake manifold and Earth`s atmosphere. Manifold vacuum is an effect of a piston`s movement on the induction stroke and the choked flow through a throttle in the intake manifold of an engine.
1. Sporadic Idling. A vacuum leak introduces excess air into the engine, and this directly affects how your engine runs. One of the primary signs of a vacuum leak is sporadic idling.
Any negative pressure significantly below standard atmospheric pressure (760 Torr/mmHg, 29.9 inHg or 14.7 PSI) is considered a vacuum.
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.
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!
Check the filters: A clogged filter can cause a vacuum cleaner to blow air instead of sucking it. Check the vacuum filters and clean or replace them as needed. Check the hose and attachments: Check the hose and attachments for any blockages or obstructions. Clear any blockages you find.
Boil old suction cups to revive them.
Take the pot off of heat and drop your suction cups in for about 30 seconds. Take them out with a pair of tongs and pat them dry on a lint-free towel. Try to use the suction cups right after you dry so they`re still warm and flexible.
An upright vacuum cleaner should be around 100 air watts and a cylinder vacuum cleaner needs to be about 220 air watts.
Air watts refer to the number of watts used by the vacuum cleaner to carry a unit of air through an opening or nozzle. The higher the air watts, the higher the suction power.
In some instances, vacuum delivery may cause brain damage. Excessive force and pressure from the suction cup of the vacuum extractor can cause injury to the brain. Severe injury and bleeding may, in turn, lead to brain damage.
Normal Vacuum Gauge Reading
This a normal reading—between 17 and 22 inches of mercury. Keep in mind, this reading is ideal for stock-cammed engines running at sea level. Higher elevations may cause slightly lower readings.
Connect a tachometer and vacuum gauge to a none regulated vacuum source on the engine. Disconnect and plug fuel vapor canister vacuum lines. Start engine and run the engine until it reaches normal operating temperature. Note the vacuum gauge reading and any variations in the pointer movement at idle and 2000 RPM.
It`s not advised to drive with a vacuum leak unless absolutely necessary. Aside from the dangers of having your car stall while driving, a vacuum leak can cause severe damage to your engine`s internals. This will lead to further costly repairs down the road. It`s best to fix a vacuum leak as soon as it`s detected.
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.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Performance indicator I have a canister vacuum. I cleaned the filter and now the performance indicator is red, is it supposed to be red or green?
ANSWER : Put tape over it so u cannot see it
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I have a Roomba 560 (it’s still in warranty !!) and, after my summer vacation, it has a problem.
When I’m charging Roomba, the orange light blinks (and this is normal!) but this orange blinking continues forever…. the light doesn’t change to green.
If I detach Roomba from the charger, the light become green and it works normally until the light changes to red and I have to charge it again.
When I’m charging Roomba, the orange light blinks (and this is normal!) but this orange blinking continues forever…. the light doesn’t change to green.
If I detach Roomba from the charger, the light become green and it works normally until the light changes to red and I have to charge it again.
WHY, DURING THE CHARGING PHASE, THE LIGHT DOESN’T CHANGE FROM ORANGE-BLINKING TO GREEN?
HAVE I
ANSWER : The problem is not with the charger itself but it is with the battery inside the Roomba. It sunds like one or more of the cells has gone bad so its not holding the same charge as it did. I would recomend sending it in while the warranty is still valid so they will replace it. Your charger and the Roomba itself should be fine.
A few tips to keep the battery working longer:
Only charge the battery when it is drained all the way to zero. It will help keep the battery active.
Only charge the battery until it is full and then disconect it from the power source. It will keep it active longer plus it will help keep your electric bill down.
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No Suction I get great suction in the hose, but when I plug the hose back into the unit, there is no suction and the air flow indicator line goes completely red. I've changed the bag and filters. I took the small panel off the back and made sure there is no clog, and took the hose off to make sure there was no clog there. Still no suction. Please help.
ANSWER : I about to say that’s always a clog of some sort that causes that
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Performance indicator light is on and suction is not strong
ANSWER : You do have a clog! trust me. Check the wand and the yoke which is on the brush assembly. its the part that connects with the wand.
if thats not it then it has to be in the hose. the only way to get it out of the hose is to take one or both ends off and push a broom stick through it
if thats not it then it has to be in the hose. the only way to get it out of the hose is to take one or both ends off and push a broom stick through it
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The performance indicator light is red and I have no suction.
ANSWER : If the motor runs, then the problem is usually plugged air passages near the bag/canister or the sweeper head/hose. Remove any hoses/bags/canisters so that you are dealing with only the vacuum producing parts. If it has a sweeper head, remove the bottom plate and clean any visible clogs in the air passages–the same with the area where the debris collects normally. Turn on the motor to see if you are getting air flow through the machine. If nothing, dig deeper into those air passages. Hope this helps!
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No suction Hello – any help with this would be much appreciated!
I just changed the bag and filters. The machine runs, seems normal, but there is no suction. There is no blockage of the hose, as indicated by the fact that that little viewer window above where the hose connects to the unit is not showing the red portion that it shows when there is something blocking the hose (god, this is hard to describe!).
If I disconnect the hose and put my hand over the hole, I feel some suction. But
ANSWER : Well, it actually sounds like there is a blockage. Try removing your hose and dropping something through it, like a quqrter. If it comes through, no clog. If it is clogged, I believe that machine has a blower on the upper part of the cleaner (maybe in the bag compartment towards the top. You can take out the filter holder and plug the hose in there and run the unit . Does the blockage come out? If not, Try shaking the hose, or you can put a stiff wire in it to try to free it. Do not run water through it. If there is no blockage at all, then you will probably need to take it to a service center. But I am pretty confident that we are looking at a clog situation. Let me know if this fixesya! Thanks, Rene (vacuum Doctor)
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After being on the charger for days and the green light is on I press the clean button. The Roomba leaves the charging unit and travels about 1 foot then the red light comes on and it beeps and won’t do anything more the red light continues to pulse.
ANSWER : Buy a new battery ,the old one isn’t holding a charge
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The suction that comes out of the wand is very light, it’s sucking things up, but the suction is very light. You know how you put your hand on the wand of a vacuum and the suction is so strong you
ANSWER : Check this video out
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