Overhauls and services of refrigeration, air-conditioning and heating units by repairing or replacing worn parts on condensers, compressors and water pumps
Test refrigeration equipment for leaks
Adjust valves, piping connections, fittings and couplings.
Removes and installs motors, thermostats and humidistats
Refills refrigeration gas
Changes and washes oil cleaners and air filters
Performs other work as required in support of general ship maintenance activities