installing the unit _21
ENGLISH
Cutting or Flaring the pipes
To prevent foreign materials or water from entering the pipe, it is important to keep the refrigerant pipe clean
and dry and to seal it while installing.
1. Make sure that you prepared the required tools.
(pipe cutter, reamer, flaring tool and pipe holder)
2. If you want to shorten the pipe, cut it using a pipe cutter ensuring that the cut edge remains
at 90° with the side of the pipe. There are some examples of correctly and incorrectly cut
edges below.
3. To prevent a gas leak, remove all burrs at the cut edge of the pipe using a reamer.
4. Carry out flaring work using flaring tool as shown below.
5. Check if you flared the pipe correctly. There are some examples of incorrectly flared pipes
below.
Oblique Rough Burr
A
Flaring bar
Copper pipe
York
Flaring bar
Copper pipe
Flare joint
Clutch type Wing nut type
Flaring tool
Outer diameter
[mm(inch)]
A[mm(inch)]
Flare tool for
R410A clutch type
Conventional flare tool
Clutch type Wing nut type
ø
6.35(
ø
1/4) 0~0.5(0~0.776)
1.0~1.5(0.039~0.059) 1.5 ~2.0(0.059~0.079)
ø
9.52(
ø
3/8) 0~0.5(0~0.776)
1.0~1.5(0.039~0.059) 1.5 ~2.0(0.059~0.079)
ø
12.70(
ø
1/2) 0~0.5(0~0.776)
1.0~1.5(0.039~0.059) 1.5 ~2.0(0.059~0.079)
ø
15.88(
ø
5/8) 0~0.5(0~0.776)
1.0~1.5(0.039~0.059) 1.5 ~2.0(0.059~0.079)
Inclined Damaged
surface
Cracked Uneven
thickness
DVM PLUS3_IM_E_31180-1.indd 21 2009-10-16 ｿﾀﾈﾄ 2:10:21
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