EdgeStar CWB8420DZ - Default Chapter; Table of Contents

Contents
1. Safety Warnings .......................................................................................................................................... 5
1.1 Warnings and Safety Instructions ......................................................................................................... 5
1.2 Safety Instructions for R600a Refrigerant ............................................................................................ 8
2. Refrigeration System .................................................................................................................................. 9
2.1 Refrigerant Cycle Diagrams .................................................................................................................. 9
2.2 Refrigeration Process .......................................................................................................................... 11
2.3 Refrigeration System Components ..................................................................................................... 12
2.4 Service Precautions for R600A Refrigerant ............................................................................................ 13
2.5 Performance Checks ........................................................................................................................... 15
2.6 Leak Testing ........................................................................................................................................ 16
3. Exploded Diagrams and Part Lists ............................................................................................................. 17
3.1 CWB1760FD Exploded Diagram ......................................................................................................... 17
3.2 CWB1760FD Parts List ........................................................................................................................ 18
3.3 CWB8420DZ Exploded Diagram ......................................................................................................... 19
3.4 CWB8420DZ Parts List ........................................................................................................................ 20
4. Electronic Controls .................................................................................................................................... 21
4.1. Modes ................................................................................................................................................ 21
4.2 Alarms ................................................................................................................................................. 21
4.3 Other Functions .................................................................................................................................. 22
4.4 Fan Operation ..................................................................................................................................... 22
4.5 Control System Self-Check .................................................................................................................. 23
4.6 Test Mode ........................................................................................................................................... 23
5. Schematic Diagrams ................................................................................................................................. 23
5.1 CWB1760FD Wiring Diagram .............................................................................................................. 23
5.2 CWB8420DZ Wiring Diagram .............................................................................................................. 24
5.3 Power PCB .......................................................................................................................................... 24
5.4 Contro l PCB ........................................................................................................................................ 25
6. Compressor Compartment Components ................................................................................................. 26
7. Reversing the Door Swing (CWB8420DZ) ................................................................................................. 27
8. Replacing Main Components .................................................................................................................... 28
8.1 Replacing the Control PCB (CWB1760FD) ........................................................................................... 28