Samsung MXJ-HA2512 Series, Руководство по установке, Страница: 13 / 137

Installation guide Installation guide
13 13
(3) Brazing the branch pipes (3) Brazing the branch pipes
Picture Picture
Work Work Description Description Things Things to to do do Check Check point point
Brazing the Brazing the
branch pipe.
branch pipe.
- Nitrogen substituted - Nitrogen substituted
brazing works on the brazing works on the
branch pipe to prevent branch pipe to prevent
generation of foreign generation of foreign
substance/oxide
substance/oxide
- Check for adequate - Check for adequate
pressure (0.01 to pressure (0.01 to
0.1kg/cm
0.1kg/cm
2 2
) )
Check the pressure and entry Check the pressure and entry
of nitrogen.
of nitrogen.
3) Refrigerant pipe works (air tightness works) 3) Refrigerant pipe works (air tightness works)
(1) Entry of nitrogen (1) Entry of nitrogen
Picture Picture
Work Work Description Description Things Things to to do do Check Check point point
Entry of nitrogen. Entry of nitrogen.
Inject nitrogen to Inject nitrogen to
the pipe to test
the pipe to test
leakages.
leakages.
Inject nitrogen at the Inject nitrogen at the
proper pressure.
proper pressure.
1 1
st st
: 10kg/cm : 10kg/cm
2 2
2 2
nd nd
: 41kg/cm : 41kg/cm
2 2
In the presence of the In the presence of the
manager, check air tightness. manager, check air tightness.
Fill out the check forms.
Fill out the check forms.
(2) Finishing the end of the pipe (2) Finishing the end of the pipe
Picture Picture
Work Description Work Description Things Things to to do do Check Check point point
Wrap the end of Wrap the end of
the pipe before
the pipe before
connecting the
connecting the
equipment, so
equipment, so
that nitrogen that nitrogen
won’t escape. won’t escape.
Sufficient brazing on the Sufficient brazing on the
end of the pipe.
end of the pipe.
Visual inspection Visual inspection
(3) Pressure gauge attached (3) Pressure gauge attached
Picture Picture
Work Work Description Description Things Things to to do do Check Check point point
Mark the 1 Mark the 1
st st
and and
2 2
nd nd
pressure to pressure to
see if it leaks. see if it leaks.
1 1
st st
: 10kg/cm : 10kg/cm
2 2
2 2
nd nd
: 28kg/cm : 28kg/cm
2 2
look at the look at the
scale. scale.
Check for leakages. Check for leakages.