Chapter 1
Check Before Servicing
1-1
Preparation for Piping Work ................................................................................................................ 3
1-1-1
Read before Servicing ............................................................................................................................ 3
1-1-2
Tool Preparation ..................................................................................................................................... 4
1-2
1-2-1
Piping Materials ...................................................................................................................................... 5
1-2-2
Storage of Piping Materials..................................................................................................................... 7
1-2-3
Pipe Processing ...................................................................................................................................... 7
1-2-4
1-2-5
Refrigerant Oil......................................................................................................................................... 9
1-3
1-3-1
Pipe Brazing.......................................................................................................................................... 10
1-3-2
Air Tightness Test ................................................................................................................................. 11
1-3-3
Vacuum Drying ..................................................................................................................................... 12
1-3-4
Refrigerant Charging............................................................................................................................. 14
1-4
Precautions for Wiring ....................................................................................................................... 15
HWE13080
- 1 -
GB