For several decades, it was the washing machine that has been considered and is one of the most important attributes in the home. Therefore, in the modern market there are many models from different manufacturers. A large assortment significantly complicates the choice. There are many criteria that can be followed when buying this household appliance. One of those is the class of the washing machine. It is about this parameter that will be discussed in the article.
What does a wash class mean?
This parameter determines how well and efficiently stains are removed from things sewn from different fabrics. In simple terms, this characteristic of the washing machine determines the quality of the wash.
This affects not only the final result, the cleanliness of the laundry, but also the cost of the household appliance and its energy efficiency.
How is it determined?
It is not possible to determine this characteristic of the washing machine independently at home. The consumer buys the already tested, tested at the manufacturing stage, household appliance. And all that remains is to believe the information that the manufacturer indicated in the documents. There is a certain technology for determining the class of a household appliance. It is designed and complies with European requirements and rules, regulated by the value of EN 60456 - A11. The essence of testing is to check and compare the quality of washing clothes in a specific washing machine and in a reference.
First, let's determine which device is called the reference SMA. Wascator testing equipment was created in 1995. This is an effective washing machine, characterized by consistently good results and a fixed indicator of the washing program. That is, the quality, for example, 5 washes, will be the same. It is this washing machine, as a standard, that takes part in determining the class of washing.
Today, such reference units have ever-larger manufacturing plants.
The process of determining this parameter of the machine consists of a number of stages.
- Take certain contaminated tissue or items and place them in the drum of the reference MCA. The weight of the load should be 5 kilograms.
- Add cleaning agent - 0.18 kg.
- Set the reference wash program, the temperature of 60 ° C, and the washing mode starts.
- For 1 hour, the machine works . After get the reference result.
Further, the process is repeated completely, only the laundry is carried out already in the tested washing machine. All programs, time, quantity and type of powder are completely identical. The results obtained are compared, and in this way the washing machine washing class is set.
To determine the spin class of a household appliance, a reference SMA is also used. Testing is performed in a certain way. After washing and spinning, the laundry is weighed. Further, it is completely dried and weighed again to determine the difference in weight between wet and dry linen. Now, with the help of simple formulas, it is possible to derive the quality of the extraction of a particular machine.
But given that we live in a world governed by scientific and technological progress, there are times when the result of washing and drying in a reference machine is inferior in quality to the unit under test. The thing is that modern devices are improved, more efficient. In such cases, the highest washing class is indicated on the device under test: class A + or A ++, and so on. The number of pluses can be many, and this means that the unit under test works much more efficiently than the reference device.
7 groups were established that determine the quality of washing, energy efficiency and energy consumption of washing machines. The better the washing results, the higher the class is assigned to the household appliance. Let's look at these classes and define their characteristic parameters and values.
Class A is characterized by the best result, effective and high-quality removal of any types of pollution. The washing quality factor is 1.3 and higher, the energy consumption is 0.17-0.19 kW⋅h / kg. And also class A is characterized by a maximum drum rotation speed, spin factors, and energy efficiency less than 45%.
The washing machines marked with this Latin letter are also pretty good. For class B, the following parameters are characteristic: quality factor 1-1.3, power consumption 0.19-0.23 kWh / kg, spin ratio 45-54%.
It has the following parameters:
- washing quality factor 0.97-1;
- power consumption 0.23-0.27 kWh / kg;
- spin ratio 54-63%.
These washing machines are characterized by:
- washing quality factor 0.94-0.87;
- power consumption 0.27-0.31 kWh / kg;
- spin ratio 63-72%.
A washing machine of this class is characterized by the following parameters:
- washing quality factor 0.91-0.94;
- power consumption 0.31-0.35 kWh / kg;
- spin ratio 72-81%.
This class is characterized by:
- washing quality factor 0.88-0.91;
- power consumption 0.35-0.39 kWh / kg;
- spin ratio 81-90%.
Such a household appliance has the following parameters:
- washing quality factor 0.75-0.88;
- power consumption> 0.39 kWh / kg;
- spin ratio> 90%.
As you can see, the last 3 classes have the lowest technical parameters. These washing machines do not wash very well, practically do not wash the dirt, consume a lot of electricity and after using the "Spin" mode, things remain wet.
It is important to know and understand the following: a branded washing machine with a class A can cost significantly more than an aggregate of a little-known brand. But this parameter of the machine is determined by one method, and the devices will wash the same way. Therefore, it is up to the consumer to decide to overpay for a big brand name or not. From the above information, we can also conclude that the better the washing machine squeezes things, its drum makes a large number of revolutions, the more electrical energy it consumes.
When choosing a washing machine, of course, you need to take into account each of the above parameters: washing class, spin cycle and energy consumption. Of course, it is better to choose a household appliance with the highest possible performance. If you want things to be clean, semi-dry, and the amount of electricity consumed as low as possible, buy a Class A washing machine.
When choosing an aggregate, the following criteria should be considered:
- the amount of things that you wash;
- time spent on washing;
- the cost of the device.
Specialists and manufacturers recommend buying washing machines of classes B and C for home use, claiming that their capabilities and functions are quite enough.
About which washing class in the washing machine is better and why, see the next video.