First, look at the appearance. Make sure that the model of the freezer is correct, check that the color of the freezer is satisfactory, and that the surface is smooth, flat, and free of scratches and looseness. The interior of the freezer needs to be smooth, free of cracks and bubbles, non-uniform, and free of odors and stains. The circumference of the freezer and cold drink door should be straight, the components should be firm, the freezer door should not be skewed, and the gap between the rotating shaft and the pin should be exactly matched. The contact area of cold drink cabinet door, freezer and sill shall not leak foaming liquid.
Second, the boot check. After turning on the power, first check the door. When the door is closed, the door of the freezer close to the door frame will close automatically due to the attraction of the magnetic stripe, and there should be no gap. Then check the compressor. After the power is connected, the freezer can be started immediately and enter the operating state; when the power is turned off, the freezer should stop normally; after restarting, the compressor should be able to start and operate normally within 1 second.
Third, check the refrigeration. 5 minutes after the freezer is started, touch the freezer's condenser (on both sides or back of the freezer) with your hand. It should feel sweltering, and the faster the heat, the better; when opening the door of the freezer, touch the evaporator with your hand, you should have a cool feeling; close the door of the freezer for about 20 minutes, a part of the condenser is already hot, open Take a look at the evaporator door of the cold drink cabinet. There should be a thin layer of frost on the evaporator. If the frost is uneven or there is no frost in a certain part, the refrigeration performance of the freezer is not good. Users can put a few glasses of cold water in the freezer, and then adjust the cold drink cabinet to a quick freezing state. Freezing time and efficiency can be used to check the freezer capacity and compressor performance.
Fourth, temperature control. When the temperature controller is adjusted to the stop position, the compressor should stop immediately; when adjusted to the strong cold position, the compressor should run continuously; after the refrigerator has been running normally for a period of time, it should be able to automatically open and stop within a certain time interval. At this time, the temperature of the refrigerator compartment should not be higher than 5 ° C, and the temperature of the freezer compartment should reach the star level. The number of compressor starts should not exceed 6-9 times per hour.
Freezer
Fifth, listen to the sound. After the compressor starts, the freezer will vibrate slightly and generate operating noise, but the noise must not be higher than 45 decibels. That is, in a quiet environment, only a slight click can
17-12-2019 1871
First, the common failure phenomenon of the refrigerator:
1. Leakage caused by refrigerant leakage, electrical (circuit, body) insulation damage, etc.
2. The cooling system is dirty and blocked, and the condenser is dusty.
3. The wire is disconnected, the fuse is blown, the overload protector contact is disconnected due to overheating or overcurrent, and the pressure relay contact is disconnected due to the abnormal pressure of the refrigerator refrigeration system.
4. Compressor motor windings, fan motor windings, solenoid valve coils, relay coils and contacts are burned.
5. The compressor is stuck, the moving parts are stuck, and so on.
6. The compressor valve is damaged, the piston is pulled, the fan blade is damaged, and various components are damaged.
How to check whether there is any failure in the freezer
Is the surface of the freezer too dirty? Has the freezer not been defrosted for a long time? Is the freezer not broken? Is the refrigerator's power supply undamaged, or is it turned off? Whether the temperature set by the switch is appropriate; whether there are obstacles in front of the freezer; the refrigeration capacity of the freezer is too small and needs to be checked by professionals;
Whether the refrigerator uses heating elements, such as heating equipment; whether strong sunlight enters and directly illuminates the surface of the refrigerator; whether certain substances are missing in the refrigerator; whether there are some unknown substances in the refrigerator.
Some phenomena in use seem to be problematic, but this is not a malfunction. Therefore, when the cooling effect is unsatisfactory, the above-mentioned reasons are excluded first.
Don't mistake the normal phenomenon as a malfunction, rush to ask the after-sales personnel to repair it, and spend some money; some phenomena are caused by improper operation, and the user should be able to adjust it by himself. Lack of refrigerant in refrigerators is common and control circuits do not work properly. The thermal protection function of the press does not work, the press is damaged, the external fan does not rotate, the external condenser is too dirty, and the pipeline is blocked.
17-12-2019 1563
How to choose a freezer
1. Make sure that a high-efficiency compressor is used. Like the human heart, it is a very important compressor. It is also the main energy-consuming component of the refrigerator. Using a high-efficiency compressor is a simple and effective way to save energy in the refrigerator.
2. Whether to adopt new type of energy saving. Different working media of refrigerators require different power consumption to achieve the same cooling capacity. This is directly related to the cooling effect of the freezer.
3, to achieve a high energy efficiency ratio. The energy efficiency ratio is the ratio of the actual cooling capacity to the actual input power during the freezer cooling operation under rated and specific conditions. The higher the energy efficiency ratio of the freezer, the more energy can be saved with the same cooling capacity.
Finally, pay attention to the protective measures of the freezer. With the above-mentioned energy-saving measures, after the refrigerator starts stable operation, power consumption is mainly used to overcome the temperature rise in the refrigerator to maintain the required low temperature. Therefore, energy-saving refrigerators should have relatively complete refrigerator protection measures, such as appropriate thickening of thermal insulation foam layers, improvement of foam materials and processes, and improvement of door sealing structures to reduce external heat transfer.
Second, the advantages of refrigerator components
If you can't see the advantages and disadvantages on the surface when you observe the refrigerator, you need to look at the interior of the refrigerator. How to judge the interior and exterior of the refrigerator?
1. Specific foam layer
The bubble layer is the heat insulation layer of the freezer. Its quality is directly related to the heat insulation effect of the freezer. The more practical the foam, the more practical the foam, the stronger the weight, the better the preservation effect and energy saving effect.
2. Dedicated evaporator
The quality of the evaporator determines the speed and preservation quality of the freezer.
3. Compressor comparison
The compressor is the core of the refrigerator. A good compressor can drop a few drops of water from the corner evaporator, and the water will turn into ice in a few seconds.
17-12-2019 1252
What is the lack of refrigeration in the freezer?
1. The ambient temperature is too high
Be careful when buying a freezer. The climate example of the freezer is very important. If the temperature is high in summer, it is best to use a freezer that can adapt to high temperature conditions. If the temperature is high, the heat load in the freezer will increase and it will take longer to start the machine, so even if the door is lowered, it should be opened.
2. The temperature is too low
When the thermostat is adjusted to this state, because the temperature is not normal, the temperature of the freezer is no longer adjusted as usual, but is adjusted according to the temperature inside the freezer through the summer thermostat. Too low to form a freezer. If you think the temperature in the freezer is too low, turn the thermostat counterclockwise or reduce the temperature.
3. Refrigerator
加工(gōng) When processing a freezer with a controlled temperature, especially at high temperatures, frost on the wall surface of the refrigerator compartment can be seen and the frost layer is thicker, thus forming a continuous freezer. The main reason for this is that the temperature control of the thermostat is too low, and the food in the box is not stored properly, which causes the freezer door to open too much, resulting in poor insulation of the freezer door. The basic elements of the process are to first stop the freezer, defrost the walls of the freezer, adjust the condition of the thermostat and check the door seals.
4. The freezer thermostat is distracting.
Because the freezer thermostat itself constitutes a freezer continuous machine, the continuous machine is important at all temperatures, not just high temperatures. The main reasons are that fluorine leaks from the machine thermostat, the temperature sensor does not sense the infection temperature, and the control board of the computer freezer is defective.
5. Freezer Freezer Leak
In this case, the front of the freezer will not cool, so after a long time, the temperature in the freezer will not slowly cool down, but will start slowly, but the compressor in the freezer will still work.
17-12-2019 1520
There are two cases where the temperature of the freezer is high. First, the refrigerant leaks fluorine without the refrigerant. The freezer has been working, but the temperature in the freezer cannot be reduced.
17-12-2019 1850