York DHP30NWB21SDCP30NWB21SDHP36NWB21SDCP36NWB21S, Руководство по обслуживанию, Страница: 84 / 89

77
Service Manual
F:Inspection
● Check the quality of
flare tool . If there is any blemish, flare the
port again according to the steps above.
The length is equal
Improper flaring
leaning damaged
surface
crack uneven
thickness
Smooth surface
Downwards
Pipe
Shaper
Union pipe
Pipe
Expander
Hard
mold
Pipe
Pipe
Pipe cutter
Leaning Uneven Burr
Note:
Improper pipe flaring is the main cause of refrigerant leakage. Please
flare the pipe according to the following steps:
A:Cut the pip e
● Confirm the pipe length according to the distance of indoor unit and outdoor unit.
● Cut the required pipe with pipe cutter.
B:Remove the burrs
● Remove the burrs with shaper and prevent the burrs from getting into the pipe.
C:Put on suitable insulating pipe
D:Put on the flare nut
● Remove the flare nut on the indoor connection pipe and outdoor valve; install
the flare nut on the pipe.
E: Flare the pipe
● Flare with 45° flaring tool
● "A" is different according to the diameter, please refer to the sheet below:
Outer diameter(inch)
A(inch)
Max Min
Ф1/4 2/39 1/36
Ф3/8 1/16 1/51
Ф1/2 1/14 1/51
Ф5/8 5/53 2/23
Appendix 3: Pipe
Flaring
Method
Note: