Initial Inspection and Diagnostic Overview

Before attempting any service that requires opening of refrigerant lines or components, the person doing the work should be thoroughly familiar with the information under Handling Refrigerant-134a, Handling Refrigerant Lines and Fittings, and Maintaining Chemical Stability, in SERVICE PRECAUTIONS. Very carefully follow the instructions in the Refrigerant Recovery and Recycling in SERVICE AND REPAIR for the unit being serviced.