ENGLISH
9
Cutting/Flaring the pipes
1. Make sure that you have the required tools available. (pipe cutter, reamer, flaring tool and pipe holder)
2. If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle
with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.
3. To prevent any gas from leaking out, remove all burrs at the cut edge of the pipe, using a reamer.
4. Slide a flare nut on to the pipe and modify the flare.
5. Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring.
6. Align the pipes and tighten the flare nuts first manually and then with a torque wrench, applying the following torque.
t *GUIFQJQFTSFRVJSFCSB[JOHFOTVSFUIBU0'/ 0YZHFO'SFF/JUSPHFOJTøPXJOHUISPVHIUIFTZTUFN
t /JUSPHFOCMPXJOHQSFTTVSFSBOHFJT_.1B
Oblique
Rough
Burr
Pipe
cutter
Pipe
Pipe
Flare
6OFWFO
Thickness
Cracked
Damaged
Surface
Inclined
Correct
Outer diameter (D)
Depth of flaring part (A)
Using flaring tool
for R-410A
Using conventional flaring tool
Clutch type
Wing nut type
mm
inch
mm
inch
mm
inch
mm
inch
1/4
_
_
_
_
_
_
3/8
_
_
_
_
_
_
12.70
1/2
_
_
_
_
_
_
_
_
_
_
_
_
Outer diameter
Connection Torque
Flare dimension
Flare shape
[mm(inch)]
mm
inch
N·m
Ibf·ft
mm
inch
1/4
_
_
_
_
90° ±2°
45°
±2
°
3_
_
3/8
_
_
_
_
12.70
1/2
_
_
_
_
_
_
_
_
3/4
_
_
_
_
Summary of Contents for PC4SUSMB
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