The motor is attached to a fan which has angled blades like an aeroplane propeller.
As the fan blades turn they force the air towards the exhaust port or outlet
Thus, a partial vacuum is created in the vaccum cleaner.
This causes the air pressure to decrease inside the vaccum cleaner as compared to the outside
The partial vaccum or the lower pressure causes a suction action.
Air from outside the vaccum cleaner rushes in through the intake port or inlet, risks up direct and dust from the surface being cleaned.
This durst & dirt is picked by the air stream rushing
The dirt filled air stream makes its way to the exhaust port passing the vaccum cleaner bag of the way.
The bags are made or woven materials like cloth or paper which acts as an air filter.
Most of the air passes out of the bag but the dirt particulars are trapped within.
The relatively clean air passes out of the exhaust port to the outside while the bag collects t he dirt from the surface being cleaned.
• TYPES OF VACUUM CLEANER :
DRY VACCUM CLEANER : Removes dust and small pieces of debris, paper, etc. It is used on floors, ceiling soft furnishing. It comes with different attachment like floor cleaning, a crevice head, upholstery head, power head and extension tubes.
(a) Electric brooms :
They are light weight, portable, used for light vaccum eg. Light dist. It does not have a motor beat brush.

(b) Back Vaccum Cleaners :
Also called piggy back vaccum cleaners. Often strapped at the back of the cleaner. It is very efficient for cleaning high hand reach areas. Have hand held extension tubes with various attachments. It does not have a motor driven beater brush. Ideal for curtains ceiling, upholstery, staircase, edges of carpets.
(c) Dustelle : A J
A hand held vaccum cleaner. It is small and light weight came into use in the 1920’s. It is an electrical equipment replacement for cloth or father dusters cleans by brushing and suction. It is easy to handle usually hand held but larger may even be strap at the back of operator. Basically, used is duster which can be used for above floor level.

(d) File Lifter Vaccums :
It is used for carpets and rugs only. It removers deeply embedded try particle matter. It groomers the nap, i.e lifts the carpet pile that has got flatten and restores their vertical orientation. It eliminates traffic pattering and used weekly on traffic planes and monthly on all carpets. This various according to the hotel occupancy rate. It is useful before shampooing the carpet especially if the roiling is heavy. It lengthens the life of carpet and rugs.

(e) Upright Vaccum :
These are the vaccum cleaners most frequently seen in hotels,, main body lios horizontal to the floor. The dust bag ties outside the machines main body. The dust bag is usually large and so less number are used. The vaccum cleaner is driven by a single motor. A belt driven beater brush helps to remove the dust from thick pile carpets. In an improved variation, there is a dual motor system. One motor drives the beater brush and the other provides the suction force.

They also have filers (HEPA), High efficiency particular air have excellent filtration qualities. It also has a built in hose with attachments which gives it more flexibility to clean hard to reach areas like corners ceiling and under furniture etc long cords of 30 fect or more and long hose pipes of 7 feet or more is desirable to clean large are on without having to plug the machine to another electrical outlet. Generally hese machines are difficult to use on bare floors. The revolving brush that digs direct out of a carpet after spits the dust from hard surfaces back out of the machine before it can suck up. It is most suited for use on large carpeted areas.

(f) Cylindrical Vaccum Cleaner :
They have no rotating brushes. It works by ruction alone. Hence, it is often called suctions cleaner. A filter cum diffuser is fitted at the outlet which removes fine dusts and micro-originations from the floor of air passing through the outlet. It also reduces air disturbance and noise. The dust bags lies inside the cylindrical body of the vaccum cleaner. A flexible base along with different attachments is used to clean a variety of surfaces. This type of vaccum cleaners is used by GRA to clean the guests room.

(g) Centralized Vaccum cleaner :
In this type suction is generated at one paint in the building soiling can be removed at vacuum point in different rooms in the building by suitable nozzles linked to detachable flexible hoses. The cones collected dust is conveyed by a network of pipes to a central container which is usually located at the lowest level of the building installation charges are high and are required to be done during the building construction stage maintenance costs are lower individual machines, dust bags are not necessary to be brought. Repair of individual machines flexes are not present. It is extremely hygienic as all dust is immediately conveyed to one area of collection from all the rooms. Thus fine dust particulars are not recalculated into living places as they are with portable vaccum cleaner. Noise is completely out of your shot operator fatigue is low.

RDC/apg/dx-11