When adding refrigerant in liquid form into the high-side of the system, the system motor/compressor assembly is running.

Question

Quizplus · Accepted Answer

Adding refrigerant in liquid form into the high-side of an A/C system while the compressor is running can cause liquid slugging. The compressor is designed to compress gas, not liquid, and introducing liquid refrigerant can damage the compressor. Refrigerant is typically added to the low-side to ensure it is in a gaseous state when entering the compressor.

When Adding Refrigerant in Liquid Form into the High-Side of the System