First, why should there be a separate circuit in the freezer?
Because the same outlet or power supply is used with other appliances, the power supply voltage becomes unstable, and the appliances often begin to cause voltage drops. In particular, when the power reaches the peak, the voltage is too low and the compressor will not start, or in severe cases, the compressor will not stop automatically. In addition, the compressor may be damaged.
Second, the cold air in the freezer is always leaking.
後 After long-term use, the aging and deformation of the door self-sealing strip will cause cold air to leak from the cabinet, reducing its cooling effect.
The inspection method is to first open the flashlight in the cold interior, close the door, and then carefully observe whether there is a gap between the freezer and light leakage, and clean the seal with washing powder. The seal will open and stick. Seal a piece of sealing tape on the original, and then check that it still does not leak. Repeat the test for this patch until the light does not leak.
Third, why can't the freezer start?
1. Whether the power supply voltage is within the specifications. Generally, the voltage should not exceed the range of 187 to 242 V. If it is not within this range, it should be installed by a voltage regulator or a professional electrician.
2. Poor contact between power supply and freezing plug;
3. The ambient temperature of the freezer should not be lower than 5 steps. Otherwise the compressor will not start.
4. The low temperature compensation switch is not turned on, the low temperature compensation switch is faulty, and the low temperature compensation heating wire cannot be turned on.
5. When the temperature controller reaches the zero position, the thermostat will fail.
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If the freezer wants to use it for a longer life, beyond its own quality standards, it also needs to be properly maintained and maintained. First of all, it must make the freezer a good environment for use.
First, there should be no unevenness between the freezer and the ground during installation, and it should be kept level and stable, otherwise it will affect the drainage. Poor drainage will affect normal refrigeration and damage the fan.
2. The freezer should not be close to the heat source and not be exposed to direct sunlight. The freezer should also ensure that the natural wind flow speed should be less than 0.2 m / s. The surrounding channels and air vents should be closed to prevent damage to the temperature in the freezer and affect the cooling effect.
3. During the use of the freezer, the voltage change should be kept within the range. If the voltage is not stable, please choose a suitable, safe and reliable voltage regulator.
4. The freezer should be used in a good environment. Generally, the room temperature is lower than 25 degrees and the relative humidity is lower than 60%. Under the conditions of higher temperature and humidity, the freezer operation will be affected to some extent.
5. During the automatic defrost process of the freezer, the temperature in the freezer will rise for a short time, which is normal.
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First, frequent power outages will cause some damage to the freezer at the next startup.
1. Frequent power failures are very harmful to the freezer. When the freezer is suddenly closed during normal operation, it takes at least 5 minutes to turn on, which will affect the life of the compressor.
2. The freezer is not a problem when it is not working, but if the compressor is suddenly turned off and immediately powered on, the thermal protection is stopped because the freezer does not work because the pressure difference between the two ends of the compressor is very large. If the cryo-protected area is damaged, the engine may be burned.
Secondly, long-term parking of refrigerators should pay attention to these tasks.
1. If the energy has not been energized for a long time, the refrigerant will change from a gaseous state to a liquid state during operation, which will cause pipeline damage and cause leakage. The effect will be very bad on the next cool down.
2. Allow the freezer to extend its service life better. It is important not to let the commercial freezer shut off frequently.
3. When using the refrigerator again, perform the corresponding inspection and cleaning work.
If the freezer is re-enabled after a long period of time, what are the dangers, what should I watch out for and how to fix and resolve the problem?
Dangerous after long periods of inactivity.
1. The long-term deactivation of the refrigerator will cause the lubricant in the compressor to sink to the bottom, and all the workpieces in the machine will dry. At this point, if it is turned on, the compressor piston will run without lubrication, which will affect the life of the compressor. This will cause economic losses.
2.How to start a long-term decommissioned freezer
When restarting the freezer or refrigerator after a long period of inactivity, three instant startups are required. The specific method is: connect the power and then disconnect, repeat every 5 minutes, turn on and off 3 times in total.
3.Recommendations for freezer
If you find abnormal noise or shutdown after initial startup, if you cannot recover from refrigeration or leakage, you should ask a regular company professional for repair. Do not disassemble and repair by yourself, so as not to expand the fault scope.
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Freezer condensation causes:
Supermarket freezer can extend the low temperature shelf life of the product. In order to prevent cold air from leaking and keep the cabinet at a low temperature, the heat insulation layer on the door seal will cause the cold air to escape and maintain the cooling effect in the cabinet. The temperature inside the cabinet is low, the temperature is high in summer, and the temperature difference between the inside and outside of the cabinet is large. When the temperature around the cabinet reaches a certain level, the door seal will have a condensation effect. If there is water droplets in the cabinet, there will be small water droplets. The lower the temperature, the more water drops.
First, why does condensation occur?
部 The interior of the freezer should always be kept at a very low temperature, especially in the freezer; the temperature is generally less than -18 ° C. Although the freezer door seal has sufficient thermal insulation capacity, it cannot be compared with the door and cabinet. However, the temperature around the freezer in summer is very high, and the temperature difference between inside and outside increases significantly. Once the humidity around the freezer reaches a certain level, the door seal will reach the "condensing point" and the bottom door of the freezer will be clearly sealed. This is because the bottom of the freezer has the lowest temperature, so condensation may appear on the bottom of the freezer door seal.
Secondly, how to solve this situation when the condensation occurs?
The appearance of dew condensation is very normal, because air vapor encounters air dew below 0 degrees. Dry with a clean towel. Placing the cabinet in a ventilated place helps to dissipate heat, improve the cooling effect, shorten the working time of the compressor, and reduce the occurrence of water drops.
How to reduce condensation?
The first thing I told consumers was that they didn't have to worry about the summer door condensation. This is normal. In order to reduce the occurrence of condensation, please pay attention to the following points when using:
1. The temperature adjustment gear should be adjusted in the low speed gear as much as possible, such as 1-3 gear;
2. In the summer rainy season, the surfaces of the freezer door and other components are often gently wiped with a soft cloth to reduce the phenomenon of condensation;
3. Place the freezer in a well-ventilated place.
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First, the common reasons for non-refrigeration:
1. The capillary of the freezer is blocked, so that the refrigerant cannot enter the evaporator, so it cannot absorb the heat emitted by the refrigerator, and the temperature in the freezer cannot drop;
2. It may be because the screws that fix the high-pressure output buffer tube in the compressor are no longer firm, or because the buffer tube is broken, the low-pressure tube cannot suck air and the high-pressure tube cannot be exhausted. Although the compressor is running, the refrigerator Nor refrigeration
3. Problems occur in the refrigeration system, such as leakage, and the refrigerator lacking heat absorption by the refrigerant does not naturally cool;
4. The liquid outlet valve and expansion valve of the refrigerator are not adjusted properly, and the components of the valve plate are not sealed well, resulting in the leakage of cold air or the wear of the compressor piston.
5. The leakage of the refrigeration system may be due to the refrigerator is not welded well or there is a problem in the use method, resulting in a slow cooling rate.
6. It may be that the gear of the freezer box is too low, which will affect the temperature of the freezer.
2. What should I do if the refrigerator is not refrigerated?
In view of the above problems, the method to solve the problem that the refrigerator is not cooled:
①If the capillary is blocked, the capillary must be removed for cleaning;
② If there is a problem with the buffer tube, you can only open the case, fix the screws, or replace the buffer tube;
③ If there is a problem with the refrigeration system, first find the location of the refrigeration system leak, weld repair, pressure test, and evacuate the location, and after all standards pass, add a certain amount of refrigerant until the temperature in the freezer reaches a certain temperature. If you can't weld by yourself, find a professional master to operate it, don't bite your head;
④ If there is a problem with the expansion valve and the outlet valve, first power off the freezer, then rotate the inlet valve counterclockwise to the end, remove the screws, install the "pair wire", and then install the pressure gauge and connecting pipe. Close the meter valve, turn the intake valve clockwise one turn to make it tee, observe whether the internal pressure of the freezer is normal, and adjust the gear according to different seasons and temperatures.
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Precautions when using the freezer for the first time:
1. When used for the first time, the freezer should run for 1-2 hours. When the operation reaches a stable state, stop the machine. Then put the food in the freezer and start it.
2. In order to prevent frequent power outages (or frequent switching) and protect the compressor, all refrigeration equipment delays the start of the compressor by two minutes (although there is delay protection, but there is no frequent switching).
3. The temperature of the freezer is adjusted and locked when it leaves the factory. Generally, they do not need to be adjusted again. If the temperature is controlled by the machine, the temperature of the freezer should be adjusted according to the ambient temperature.
4. The defrost of the freezer is automatically controlled by a computer. The freezer stops running and enters the defrost state (Note: The temperature rises slightly when the defrost is normal). Freezer automatically cools after defrosting.
5. The freezer should maintain an area of more than 10 cm before and after refrigeration, which is conducive to good ventilation of the refrigeration system and guarantees the refrigeration effect of the equipment. When placing food, do not place it too close to the air outlet. Keep proper clearance when placing the goods to facilitate the convection of cold air and the uniform temperature.
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In use, attention should be paid to the working status of each component of the refrigerator and the stability of the power supply. Whether the refrigeration, electrical, and wind systems are operating normally. 1. Stability of power consumption: The power supply of the refrigerator must use independent sockets. The current capacity of the socket and power cord must be the same as that of the refrigerator, and the socket must be reliably grounded. When the voltage is unstable, it is recommended to use a regulator with more than five times the voltage and power. Mainly observe the three parts of the refrigeration system, electrical system, and wind system to determine whether they are working properly.
1. Refrigeration system: observe whether there are cracks, breakages, frosts, and condensation on the refrigeration system pipelines; whether there is friction between the refrigeration pipelines, pipelines and the casing, especially the welding of the refrigeration pipelines, and whether there is any seepage at the joints leak. Where there is oil, or wipe the pipe with a clean soft cloth and soft paper. At the road welding and joints, observe whether there is oil pollution and judge whether there is leakage.
2. Electrical system: observe whether the electrical system fuse is blown, whether the wire insulation is intact, whether the circuit board is disconnected, whether the connection is loose, etc., especially whether the electrical connection is in good contact. The connecting screws and sockets are easily loosened, causing poor contact.
3. Air system: observe whether the air filter, heat exchanger coils, and fins have accumulated too much dust; whether the air inlet and outlet are open; whether the fan and fan blades are operating normally;
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What can we do to reduce the energy consumption of the freezer? This starts with the details, because the power and volume of the freezer cannot be changed. Awareness affecting the energy consumption of the freezer. What can be improved inside and outside the freezer?
First of all, we need to know what effect it has. The cooling efficiency of the freezer condenser is reduced, and the heat of food brought by the refrigerant from the freezer in the system cannot be exchanged smoothly. If the ventilation conditions are not good, its performance will be obvious.
Secondly, because the ambient temperature is relatively high and the relative temperature of food input is relatively high, the cooling time of the freezer is relatively long.
If the thermostat's gear is still in the upper gear at high temperature, it will inevitably lead to longer startup time or even shutdown, the cooling efficiency of the freezer condenser will decrease, and the heat brought by the refrigerant of the refrigerator cannot be exchanged smoothly. If the ventilation is not good, its appearance will be obvious.
The heat loss when the freezer is closed is also very large. In general, when the ring temperature reaches 32 degrees, the power consumption of the refrigerator may reach twice the rated power consumption, and so on. If you don't pay attention to these details, you can improve them in the future and you can reduce a lot of energy consumption.
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