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  • Install gauges and check operating pressures
  • Check voltage and amperage to all motors with meter
  • Check for adequate refrigerant charge
  • Check air temperature across evaporator
  • Lubricate all moving parts
  • Check belt and adjust tension if applicable
  • Check filters and change them if supplied by customer
  • Test operation and condition of compressor and compressor components
  • Check and clean contactor contacts
  • Check all wiring and connections
  • Check thermostat for accuracy
  • Check air temperature across condenser
  • Check that the condensate drain is open from the exterior
  • Provide general equipment-condition report to the owner
  • Check all safety controls