Sanyo SGP-M2 Manuel D'installation page 33

3-3. Connecting the refrigerant tubing
1. Remove the gas tube and liquid tube fastening panel from the tube connection panel. Remove the fasten-
ing rubber.
2. Connect the tubes and perform brazing.
3. Reattach the gas tube, liquid tube fastening panel, and fastening rubber as they were originally.
Be sure to perform the following before brazing.
• The rubber that fastens the tubes is damaged easily by heat. Be sure to remove it before brazing.
• Cool the tubes with wet cloths or other materials to prevent the value inside the machine from be-
ing damaged by the brazing heat.
• Be sure to replace the contents of the tube with nitrogen to prevent the formation of an oxide fi lm.
• Do not use commercially available oxide fi lm agents (antioxidants). They can adversely affect the
refrigerant and the refrigeration oil, and can cause malfunctions.
If using fl are connections (for the indoor connectors or other part), apply refrigeration oil to the fl ared
part.
Tube connection
panel
Discharge tube
Discharge tube
fastening rubber
Suction tube
fastening rubber
Liquid
Liquid tube
tube
Suction fastening
rubber
tube
Fig. 15
Pressure gauge
Fig. 16
GB - 33
Tube connection
panel
Discharge tube
Suction tube
Liquid tube
Brazing
Pressure reducing valve