The evaporator is the most important, but too vulnerable part of any household refrigerator. If this node fails, you must react quickly to a breakdown and replace the broken part.
What is an evaporator?This is a refrigerator unit that converts the refrigerant (freon) from the liquid state to the gas. That is, the process of evaporation takes place in it. The compressor generates pressure, and from the condenser the liquid Freon flows into the evaporator zone. In it, freon takes away the heat generated in the refrigerating chamber, as a result of which it cools, and freon goes into the condenser. When the evaporator is not working, cooling does not occur, and the refrigerator can not cope with its main function - keeping the cold.
In this publication, we will look at the causes and signs of a breakdown of the evaporator, find out what types of parts are there and how the evaporator is replaced in the refrigerator.
What are the evaporators
In modern refrigerated cabinets several types of evaporators are used. That you were not frightened by the price of repair, it is necessary to find out the type of the detail and to orient in advance in the quotations for it.
Open type
In small refrigerators, as in older models, an open type is often used. In everyday life it is simply called a freezer. It looks like a sheet bent in the shape of the letter "O" or "C".
This type is considered the most vulnerable. If, due to mechanical damage (improper transportation or negligent defrosting), scratches or cracks appear on it, the integrity of the part is impaired, and Freon leaves the system. It will take a replacement of freon, and the cost of these works is rather big. That's why the masters strongly do not recommend using sharp objects for ice chips during defrosting.
Closed "crying" type
The thawing evaporator is located on the rear of the refrigerating cabinet. It is covered with foam-insulation and is protected by a back wall. The advantage of such a device is that washing and defrosting is facilitated, and the part is reliably hidden from possible damage.
In models with a closed type, moisture settles from the back wall, some of the drops freeze. Plus, the ice and snow "coats" are not formed, as in models with an open type of evaporator refrigerating chamber. When the motor pauses, the frozen condensate thaws and drains into the drain hole at the bottom of the chamber. In such models, the coldest place in the chamber is just from the back wall.
In the freezer compartment there is usually a second evaporator - with a closed, partially closed or open structure.
Separated type
It can be located either behind the wall of the chamber or behind the partition. It is forcedly blown by a fan. Usually parts that are outside the refrigerator compartment are installed on models with No Frost function.
The most reliable are closed tubular parts, hidden in the walls of the refrigerating chamber. This design maximizes the protection of the unit from accidental damage by the user.
Note! Based on the type of element, you can find out the cost of repair in advance, by finding in the online store or by knowing in the nearest outlet the price for a new part. It is very important that the analogue correspond not only to the brand ("Atlant "Indesit "Ariston "Nord "Liebher"), but also the refrigerator model. Therefore, immediately inform the seller of the brand, model and year of production of the c / o.
Reasons for evaporator failure
To solve the problem, it is necessary to determine precisely the cause of equipment failure in order to avoid repeated breakdowns in the future. Typically, breakdowns are caused by violations of the rules for using the refrigerator, but mechanical damage as well as factory defects are not excluded. At the same time it is impossible to navigate at the price of a refrigerator - it is defective from the factory or not.
Specialists of leading service centers LG (and not only) report factors that can negatively affect the serviceability of such a detail as the evaporator:
- Incorrect installation of the device(close to furniture, heating radiators or under direct sunlight) causes a malfunction in the temperature conditions of the cameras. The same effect can be achieved if you frequently load uncooled foods into the chambers (hot pans, etc.).
- Capping of the evaporator capillary. This can be to blame as a low-quality sealant material, in which the condenser tubes are immersed, and equipment wear during prolonged use.
- Refrigerant leaksFrom the contour also knocks out the node from the normal mode of operation.
How does the evaporator change in the workshops and at home?
Urgent repairs today are carried out both in the workshop and at home. If it is possible to repair the equipment without transporting it to the workshop, select this option. Additional moves will not benefit either the refrigerator or your budget.
Evaporator replacement stages:
- Dismantling the refrigerator body, removing the user control panel.
- Removing the evaporator from the tubes.
- Separating from the tubes of the old evaporator.
- Cleaning the filter-drier (before this happens, bleeding freon from the filter through a special valve).
- Crimping the system and finding a leak of freon using a leak detector.
- Troubleshooting. If the breakdown can be eliminated by sealing the puncture of the evaporator, a spike is performed. If repair is not possible, the wizard will replace the part.
- Check the motor-compressor tubes for integrity.
- Vacuuming and dehumidifying the system from moisture.
- Filling the compressor with refrigerant, starting the device for test work.
It is this, the above sequence of operations, will ensure that the newly installed evaporator will serve its intended life. Avoid artisanal repairs, do not rely on your strengths (if you do not have the experience and tools) and use the services of professionals.
