MACS 609 Certification Practice Exam

When recovery/recycling equipment is used, how much lubricant is generally removed from a mobile A/C system?

1. A considerable amount

2. Generally, very little, if any

3. A fair share

4. None at all

The correct answer is: Generally, very little, if any

When recovery or recycling equipment is utilized for mobile A/C systems, the amount of lubricant typically removed is generally very little, if any. This is primarily because the design of these recovery systems focuses on extracting refrigerant effectively while minimizing the loss of lubricant, which is critical for the operation of the A/C system. Lubricants play a vital role in ensuring the smooth operation of compressors and other moving parts within the A/C system. When these systems are serviced, technicians are trained to recover as much refrigerant as possible without unnecessarily disturbing the lubricant. The measures taken during the recovery process help maintain the integrity of the lubricant in the system, allowing for optimal performance after the refrigerant has been serviced. Therefore, option "B" accurately reflects the operational standard in mobile A/C system servicing, highlighting the importance of retaining lubricant to ensure system efficiency and longevity.