True or False: If an appliance has an operating compressor, it is necessary to access both the low and high side of the system for recovery.

• A. True
• B. False
• C. Only for large systems
• D. Only for systems without a filter drier

Answer: (B)

When recovering refrigerant from an appliance with an operating compressor, it is essential to understand how the recovery process works. Recovery generally requires accessing both the low and high sides of the system to ensure that all refrigerant is efficiently removed. However, there are specific circumstances where access to only one side might be acceptable.

For systems in operation, recovery should typically involve both sides, but if the statement posits that it is "necessary" to access both continuously, it overlooks scenarios like when a system is primarily on the low side or other considerations such as the presence of a compressor that can facilitate recovery from just one side.

By stating this as false, the understanding is reinforced that while it is best practice to access both sides for complete recovery, there are exceptions based on the system design and operational conditions where accessing only one side can suffice.