The main Kelly kitchen cold storage belongs to commercial refrigeration equipment, and how to adjust the refrigeration depends on the specific model and refrigeration system. Generally speaking, adjustments can be made according to the following steps:

1. Make sure that the power supply of the equipment is connected normally and the power switch is turned on.

2. Check the temperature control panel or regulator of the equipment to ensure that the temperature is set within the required range. Usually, this temperature range is marked on the control panel of the equipment.

3. If the device is equipped with a digital display, you can adjust the target temperature by pressing the add and subtract buttons. Adjust the temperature gradually as needed, and then observe whether the temperature inside the equipment meets the expectations.

4. If the equipment has no digital display screen, you can adjust the temperature by adjusting the temperature control knob or switch in the machine. Generally, clockwise rotation or upward movement will increase the temperature, and counterclockwise rotation or downward movement will decrease the temperature.

5. After adjusting the temperature, give the equipment some time to stabilize the temperature. This may take several hours or more, depending on the type and size of the device.

If the requirements cannot be met through the above steps, it is recommended to consult the equipment manufacturer or professional maintenance personnel, who can provide more detailed operation guidance.

Please note that the above answer is based on the general situation, and different types of kitchen refrigeration equipment may have different operation steps and adjustment methods. It is recommended to operate according to the instruction manual of the equipment.