IV Table of Contents
SECTION E - REFRIGERATION SYSTEM............................48
DEFINITIONS .................................................................................................... 48
Recovery.................................................................................................. 48
Recycling................................................................................................. 48
Reclaim ................................................................................................... 48
SAFETY WARNINGS ............................................................................................. 49
Compressor Testing................................................................................. 49
Charging Sealed Systems........................................................................ 49
Soldering................................................................................................. 49
BASIC COMPONENTS .......................................................................................... 50
Perimeter Hot Tube .................................................................................. 50
Refrigerant Cycle ..................................................................................... 51
TESTING FOR REFRIGERANT LEAKS .................................................................. 52
CHECKING FOR INTERNAL (HOT TUBE) LEAKS ................................................... 52
COMPRESSOR REPLACEMENT ........................................................................... 53
To Use Dry Nitrogen to Flush the System ................................................. 54
To Use Refrigerant to Flush the System ................................................... 54
Installing a New Compressor ................................................................... 55
EVAPORATOR REPLACEMENT ............................................................................ 58
HEAT EXCHANGER REPLACEMENT .................................................................... 60
PERIMETER HOT TUBE REPAIR KIT .................................................................... 62
Bypassing Perimeter Hot Tube - Step 1 .................................................... 62
Installing the Heater Wire - Step 2 ............................................................ 63
Installing the Heater Wire - Step 3 ............................................................ 64
CONDENSER REPLACEMENT .............................................................................. 65
FILTER-DRIER INSTALLATION.............................................................................. 66
EVACUATING AND RECHARGING ......................................................................... 67
Equipment Needed For Evacuation & Recharging .................................... 68
Installing Evacuation & Recharging Equipment ....................................... 68
Evacuating System .................................................................................. 68
Charging the System ............................................................................... 69
Preparing the Charging Cylinder.............................................................. 70
Final Leak Test......................................................................................... 70
R-134a SERVICE INFORMATION ........................................................................... 72
Verify Refrigerant Type In the System ....................................................... 72
Dedicated Equipment............................................................................... 72
R-134a Refrigeration Systems .................................................................. 72
Miscibility of R-134a and Ester Oil ........................................................... 73
Water In the Refrigeration System ............................................................ 74
Vacuum Pump Maintenance..................................................................... 75
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