English
16
English
Refrigerant Piping Work
Removing the drip proof cover
1.
Take out 1 screw and remove the drip proof cover.
•
Hook
Tab
Use the holding tape attached to the unit to temporarily
fi
x the drip proof cover to the side of the unit.
•
Flaring the pipe end
2.
Cut the pipe end with a pipe cutter.
1)
Remove burrs with the cut surface facing down-
2)
ward so that the chips do not enter the pipe.
Put the
fl
are nut on the pipe.
3)
Flare the pipe.
4)
Check that the
fl
aring is properly made.
5)
A
A
(Cut exactly at
right angles.)
Remove burrs.
Flaring
Set exactly at the position shown below.
Die
0-0.5mm
Clutch-type
Flare tool for R410A
1.0-1.5mm
Clutch-type
(Rigid-type)
1.5-2.0mm
Wing-nut type
(Imperial-type)
Conventional flare tool
Flare’s inner surface
must be flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
Check
WARNING
Do not use mineral oil on
fl
ared part.
•
Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.
•
Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.
•
Do never install a drier to this R410A unit in order to guarantee its lifetime.
•
The drying material may dissolve and damage the system.
•
Incomplete
fl
aring may cause refrigerant gas leakage.
•
01_EN_3P276870-1.indb 16
01_EN_3P276870-1.indb 16
2/23/2011 5:04:23 PM
2/23/2011 5:04:23 PM
