What does bomb charge mean in refrigeration and air conditioning?

In refrigeration and air conditioning, "bomb charge" refers to the practice of charging a system with refrigerant under high pressure to ensure that it can handle the pressures involved during operation. This term is often used in the context of testing the integrity and leak-tightness of the system before it is put into service. The process involves using a pressure gauge to monitor the system and ensure that it maintains the required pressure levels. Proper bomb charging helps prevent issues related to low refrigerant levels and improves overall efficiency.