System Diagnostics ............................................................................................................................... 24
Air Circulation Patterns ......................................................................................................................... 28
Definitions ........................................................................................................................................... 29
Recovery ...................................................................................................................................... 29
Recycling ...................................................................................................................................... 29
Reclaim ........................................................................................................................................ 29
Safety Warnings .................................................................................................................................. 29
Compressor Testing ....................................................................................................................... 29
Charging Sealed Systems .............................................................................................................. 29
Soldering ............................................................................................................................................. 30
Basic Components ............................................................................................................................... 30
Perimeter Hot Tube .............................................................................................................................. 30
Refrigerant Cycle ................................................................................................................................. 30
Testing for Refrigerant Leaks ................................................................................................................ 31
Compressor Replacement ..................................................................................................................... 31
To Flush The System ..................................................................................................................... 31
Installing a New Compressor ................................................................................................................. 32
Evaporator Replacement ...................................................................................................................... 33
Heat Exchanger Replacement ............................................................................................................... 35
Condenser Replacement ....................................................................................................................... 38
Filter-Drier Installation .......................................................................................................................... 38
Evacuating & Recharging ..................................................................................................................... 38
Evacuating System ........................................................................................................................ 39
Charging The System ..................................................................................................................... 39
Final Leak Test.................................................................................................................................... 40
R-134a Service Information ................................................................................................................... 41
Dedicated Equipment ............................................................................................................... 41
Vacuum Pump Maintenance ........................................................................................................... 42
Refrigerant Leaks ........................................................................................................................... 43
Leak Detection .............................................................................................................................. 43
R-134a Properties .......................................................................................................................... 43
Inhalation Toxicity .......................................................................................................................... 45
Cardiac Sensitization ..................................................................................................................... 45
Spills or Leaks ............................................................................................................................... 45
Skin and Eye Contact .................................................................................................................... 45
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