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561 HVACPro
Users Manual
ii
Measuring Grille, Register, or Diffuser Discharge Temperature .........15
Verifying Thermostat/Room Sensor Accuracy ....................................15
Checking for Blockage in Air-To-Air Evaporators or Condensers........ 15
Checking Superheat on Fixed Restrictor or Capillary Tube
Equipped Evaporators ......................................................................... 16
Checking Subcooling on Air-To-Air Systems With Expansion
Valve Equipped Evaporators................................................................ 16
Maintenance............................................................................................17
Changing the Battery........................................................................... 17
Cleaning the Lens................................................................................17
Cleaning the Housing ..........................................................................17
Troubleshooting ...................................................................................... 17
CE Certification........................................................................................ 17
Specifications..........................................................................................18