Specifications

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by means of a bimetallic overload relay or a thermal switch. The motor is located in such way
that water leakages do not fall on to these motors
6) Timer: The timer helps setting the wash time for the clothes manually. In the automatic mode
the time is set automatically depending upon the number of clothes inside the washing machine.
7) Controller: The controller comprises of the various electronic components and circuits,
which are programmed to perform in unique ways depending on the load conditions (the condition
and the amount of clothes loaded in the washing machine). They are sort of artificial intelligence
devices that sense the various external conditions and take the decisions accordingly. These
are also called as fuzzy logic systems. Thus the controller will calculate the total weight of the
clothes, and find out the quantity of water and detergent required, and the total time required for
washing the clothes. Then they will decide the time required for washing and rinsing.
8) Drain pipe: The drain pipe enables removing the dirty water from the washing that has been
used for the washing purpose.
Working of Top loading washing machine: The process of washing starts in the inner wash
tub. It involves the adding of water and detergent mixture to the clothes. The detergent contains
many enzymes that work on clothes to clean them. In the inner wash tub, the cloths are tumbled
and moved to all sides of the agitator.
Agitator enhances the action of enzymes on clothes. An agitator is a plastic cylinder positioned
at the center of the inner tub. Generally, an agitator is finned. Its finned structure aids it in its
function. The function of an agitator is to move the clothing up, down, back and forth so that the
clothing mixes well with the detergent. The inner wash tub also moves along with the agitator.
This motion is repeated for a determined period of time. The agitator ensures thorough cleaning
of the clothing. This cycle is known as the wash cycle.
The timer helps setting the wash time for the clothes manually. In the automatic mode the
time is set automatically depending upon the number of clothes inside the washing machine. In
the wash cycle, the agitator and the inner tub are moved rhythmically by a powerful electric
motor. In fact, it is the motor which accelerates the process of washing.
Fig.12.10 - Simple structure of Top loading washing machine