Gas pipe accessory (Only for RASC-(8/10)HNPE)
The gas pipe accessory (factory-supplied silencer) shall be brazed to the field supplied gas line, and connected to the
gas valve as indicated in the drawing:
Brazing work
!
C A U T I O N
•
Use nitrogen gas for blowing during pipe brazing. If oxygen, acetylene or fluorocarbon gas is used, it will cause an explosion or
poisonous gas.
•
A lot of oxidation film will occur inside of tubes if no nitrogen gas blowing is performed during brazing work. This film will be flecked
off after operation and will circulate in the cycle, resulting in clogged expansion valves, etc. This will cause bad influence to the
compressor.
•
Use a reducer valve when nitrogen gas blowing is performed during brazing. The gas pressure should be maintained within 0.03 to
0.05 MPa. If a excessively high pressure is applied to a pipe, it will cause an explosion.
3 Piping work and refrigerant charge
Piping connection for RASC unit
SMGB0091 rev.2 - 11/2015
37
3