Pipe expanding method
Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps:
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the distance of indoor unit and outdoor unit.
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pipe
pipe cutter
leaning uneven burr
B:Remove the burrs
Ɣ5HPRYHWKHEXUUVZLWKVKDSHUDQG prevent the burrs from getting into the pipe.
pipe
shaper
downwards
C:Put on suitable insulating pipe
D:Put on the union nut
Ɣ5HPRYHWKHXQLRQQXWRQWKHLQGRRU connection pipe and outdoor valve; install the union nut on the pipe.
union pipe
pipe
E:Expand the port
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hard 
mold 
expander 
pipe
Note:
Ɣ$LVGLIIHUHQWDFFRUGLQJWRWKH diameter, please refer to the sheet below:
Outer diameter | $ PP | |
|
| |
(mm) | Max | Min |
ĭ | 1.3 | 0.7 |
ĭ | 1.6 | 1.0 |
ĭ | 1.8 | 1.0 |
ĭ | 2.4 | 2.2 |
|
|
|
F:Inspection
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If there is any blemish, expand the port again according to the steps above.
smooth surface
improper expanding
leaning damaged crack uneven
surface thickness
the length is equal
32