When there is too much refrigerant in the system, the exhaust pressure increases, the operating current increases, the refrigerant flows through the pipeline has a significant tremor, the compressor may increase the liquid impact, and sometimes you can even hear the heavy liquid impact sound, which brings great danger to the normal operation of the compressor, and the excess refrigerant must be discharged in time.
When discharging excess refrigerant, it should be discharged slowly and repeatedly, so as to avoid excessive displacement and refill, in addition to adding maintenance troubles, but also because the balance of the system takes a certain amount of time.