Why should low and high side access valves be installed when recovering refrigerant from a household refrigerator? (A) A) To improve speed of recovery. (B) B) To prevent non-condensables contamination. (C) C) To protect the recovery machine. (D) D) To prevent oil migration.

Installing low and high-side access valves when recovering refrigerant from a household refrigerator is vital for a few reasons! Firstly, it allows technicians to efficiently access and recover refrigerant from both the evaporator and condenser sides, which speeds up the entire recovery process. Plus, having access to both pressures helps ensure that the system is properly evacuated, leading to a cleaner end result and preventing any lingering contaminants. Secondly, these valves provide a safeguard for your recovery machine. By connecting to both sides of the system, they help to manage pressure differentials that might damage the equipment during the recovery process. This helps to avoid overpressure situations that can cause harm and keep your tools running smoothly for many jobs to come!