Carrier Compressors Service Guide

2.3 — Troubleshooting Procedures!DANGERBefore attempting service work on the compressor, thefollowing safety precautions must be strictly observed.Failure to follow these instructions could result inserious personal injury or death. See Warning Label.Follow recognized safety practices and wear protectivegoggles.Do not operate compressor or provide electric power to thisunit unless the compressor terminal box cover is in place andsecured.Do not provide power to unit or turn on compressor unlesssuction and discharge service valves are open.Do not remove the compressor terminal box cover until allelectrical sources have been disconnected.!DANGERWhen leak-testing semi-hermetic compressors, checkaround the terminal box COVER. Test around thewire entry point(s) of the COVER because refrigerantis likely to concentrate there. Do not remove theterminal cover to perform this leak testingbecause bodily injury or death can result from fireand/or explosion if cover is removed or unsecuredbefore power is disconnected and pressure isrelieved. Electrical terminal pins may blow out,causing injury and fire.20