bearings, bearing replacement, screw compressor assembly and repair, refurbishment, assembly procedures, mechanical tolerances, centrifugal compressor assembly and repair, engineering specifications, clearances, inspection techniques, Overhaul, assembly, compressor repair, shaft measurements, precision assembly, testing and performance verification, rotating equipment maintenance, Alignment, precision measuring instruments, Inspection, rotor inspection

Air-conditioning servicing, Chemical wash, R32 refrigerant handling, Minor repairs, Chemical overhaul, Refrigerant top-up, Refrigerant checks, Troubleshooting