What document must technicians keep to verify compliance during MVAC work?

The requirement for technicians to maintain a service record detailing work performed and refrigerant handled is essential for verifying compliance during MVAC (Motor Vehicle Air Conditioning) work. This documentation serves multiple purposes: it provides a historical record of the technician's activities, ensures that all regulations regarding the use and handling of refrigerants are being followed, and can be referenced in the event of an audit or inspection. Proper record-keeping is crucial for tracking refrigerant quantities, which is important for environmental protection and adherence to the Clean Air Act, as well as ensuring that technicians are working within the guidelines set by regulatory bodies. This practice not only fosters accountability but also helps in maintaining transparency regarding the environmental impact of HVAC practices.