How to prevent freezing of refrigeration equipment?

First, re-tighten and tighten the loose connection of the threaded connection. Make sure that there are no leaks during the high pressure test of the pipeline. The pipeline of the refrigeration cycle system is divided into a high-pressure section and a low-pressure section, which are flushed with four records of carbon, and then purged and sealed with nitrogen.
Then the compressorChina Portable Fridge and Freezer factory unit must be operated in strict accordance with the steps, replaced with a new filter, and then the pipes of the refrigeration cycle system must be unsealed for blow molding and sealing, and the compressor unit must be assembled quickly. Then follow the first step to quantitatively inject refrigerant. Finally, wait for five minutes (waiting for the static equilibrium of pressure in the high-pressure zone and low-pressure zone in the refrigeration cycle system) to turn on the power of the tester.

Pay attention to moisturizing

1. Seal or seal moisture-proof treatment for non-maintenance department.
2. The maintenance department should quickly disassemble and disassemble.
3. Don't choose to keep in rainy weather.

Backup technique

But there will always be some situations. For maintenance, refrigeration equipment with slight ice blockage can use the first-person method:

1. Recycle refrigerant and replace with new filters;
2. Connect a filter for the cubic freezer in series at the high-pressure exhaust end.
3. Replenish the refrigerant quantitatively;
4. Bake a 1000w iodine tungsten lamp in the refrigerator (note: the temperature is lower than 70℃).
5. Test for one hour after starting up. Recover the refrigerant, disassemble and connect a cubic freezer filter connected in series with the high-pressure exhaust end, and replace with a new filter;
6. Fill the refrigerant quantitatively.