Shift 1st Shift Description HIRING FOR 2ND SHIFT. Maintain, diagnose and repair refrigeration equipment. Maintain daily logs and other required paperwork. Operate, maintain and troubleshoot ammonia refrigeration compressors, condensers, pumps, vessels, re-circulators, purgers, evaporators, valves, etc. All other relevant duties to the job. Requirements 1+ year experience operating and maintaining Ammonia Refrigeration systems required. 1+ year experience with electrical low and high voltage ci