Cooked food freezer is an indispensable refrigeration equipment in restaurants. When purchasing cooked food freezer, the bigger the volume, the better, and the lower the energy consumption. So what factors should be considered when purchasing a cooked food freezer? The bigger the freezer for cooked food, the better? Because it runs around the clock, if it is improperly used or maintained, it is easy to have various problems. What problems often occur due to improper operation or use? How to find a solution? It is very important to choose a refrigerator for cooked food that suits you. Next, let me introduce the related knowledge of cooked food refrigerator to you!

What factors should be considered when purchasing a refrigerator for cooked food

First, capacity: according to the standard, the effective capacity is marked on the label, that is, the capacity for storing food. Generally speaking, the capacity of cooked food refrigerator is 71-81 liters. However, with the change of lifestyle, people demand more and more capacity, especially the freezer. The choice should be considered in combination with the actual situation of the family. The bigger is not the better, and the energy consumption of large-capacity cooked food refrigerators will also increase.

Secondly, there are three refrigeration modes: 1. Direct cooling refrigeration mode: low price, electricity saving, good preservation and moisture retention; Uneven temperature, need to defrost, suitable for dry northern and inland areas; 2. Air-cooled refrigeration type: automatic defrosting, low humidity, easy air drying and dehydration of food, suitable for humid areas, high power consumption and small volume; 3. Direct air-cooled refrigeration: It has both advantages, but it consumes high power.

third, the quality is good or bad: it is very important to use it for a long time, with good quality and durability. Design, technology and raw materials become the reference for considering quality. The design should be humanized and meet the needs of life. Manufacturers with high technical foundation have more guaranteed quality. In terms of material selection, pure steel pipe and imported coated steel plate are life indexes.

what should I pay attention to in the daily maintenance of cooked food refrigerator?

under normal use, the working time should be shorter than the downtime. If it is just the opposite, it means that the work is not normal.

The main reasons for the above failures are as follows:

1. After the cooked food cabinet works for a long time, the evaporator can't be defrosted due to frost, and the frost in the interior room is too thick and the thermal resistance is large, which affects the conduction of cold air and leads to the temperature in the cabinet can't be reduced.

Response: Defrost in time, ensure food hygiene, maintain appearance and internal hygiene and safety, and consumers have a strong desire to buy. Avoid too thick dust on the condenser and clean it regularly with cleaning tools.

2. If it is placed improperly, it will also affect the cooling effect. For example, placing it too close to the wall will affect the heat dissipation of the condenser.

improvement: don't leave too many sundries in the deli cabinet, stay away from the heat source, and remember not to place it too close to the wall, so as not to affect the heat dissipation.

3. insufficient refrigerant injection or leakage, such as refrigerant leakage in the pipeline of the refrigeration system, may easily lead to insufficient refrigerant in the circulation system.

inspection: when something goes wrong, if a pressure gauge is connected to the process nozzle for inspection, the pipe pressure is obviously lower than the normal value.

solution: replenish the refrigerant in time, or call the master to replenish the refrigerant at home.

4. Overcharged refrigeration system, heavy working load of compressor, hot top and close to normal temperature bottom of condenser. Too much refrigerant charge can't fully evaporate in the evaporator, which leads to the decrease of the refrigerating capacity of the evaporator

Inspection: if a pressure gauge is connected to the process nozzle for inspection, it is found that the low pressure is higher than the normal value.

5. Over-use, after the service life is exceeded, the mechanical wear of the compressor will be great, and problems such as high casing temperature and low relative temperature of high-pressure exhaust pipe will occur when working.

inspection: connect a pressure gauge to the process nozzle for inspection, and find that the low pressure value is on the high side.

solution: replace the compressor in time, overwork, and the cooked food freezer will "retire" sometimes.