Treatment method of insufficient refrigeration in freezer

in high temperature weather, the cooling effect of the commercial freezer is not good, the temperature cannot drop, why my freezer is not cooling, etc, all this is caused by the external environment and the incorrect use of human beings. How to deal with such situations?
treatment method for insufficient refrigeration of commercial freezer:
1. When the freezer split machine is installed outdoors, choose a cool and ventilated place to install and try to avoid direct sunlight. If the freezer is an internal machine, it also needs to be placed in a ventilated place. There should be a certain space for heat dissipation on the left and right sides and at the top of the freezer;
2. The existing external machine has been installed in the place where the solar energy directly shines, and sun protection facilities can be added to the external machine; 3. The shutdown temperature of the freezer can be appropriately increased by 2 degrees to reduce heat dissipation of the freezer, and at the same time, the cooling effect of the articles will not be affected;
4. Clean the freezer regularly. The fins of the condenser of the freezer should be cleaned with a brush every one month or three months or so, thereby improving the heat dissipation effect of the freezer. Remember to turn off the power supply of the freezer before cleaning, remember!