Checks proper assembly and installation of each unit and parts (i.e., depending on assignment: proper installment of EVAP coils/compressors, proper assembly of bases/posts, filter racks, blowers, condensers, control board; all motors are proper voltage; all brazing procedures are followed; correct charging of unit and charging procedures are followed; etc.). • Confirms availability of necessary parts (i.e., depending on assignment: sensors, valves, switches, motors, economizer assembly parts, controllers, relays, contactors, fuses, filters, doors, roof panels, etc.).