3. Clean the system piping.

4. Check the operation of the compressor to see if it needs to be cleaned.

5. Check the compressor belt and bracket to see if you need to repair the bracket or adjust the belt.

(When cleaning, the gas is selected from nitrogen. If other gases are used, it may cause damage to the system. It is also necessary to wash the system with cleaning agent and nitrogen to clean the impurities of the system and maintain the stability of the system.)