5Check that you flared the pipe correctly.
Correct | Inclined | Damaged surface | Cracked | Uneven thickness |
CAUTION
•If foreign matters or burrs are not removed after cutting the pipe, refrigerant gas may leak.
•If foreign matters enter inside of the pipe, the important interior parts of the unit may get damaged or product efficiency will be reduced. Therefore, direction of the pipe should be downward during cutting or flaring the pipe.
Tightening flare connection part
•Check that the flaring is properly made.
•Align the center of the piping and sufficiently tighten the flare nut with fingers. Then, tighten the flare nut with torque wrench until the wrench clicks. When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench.
•Make sure to use ester oil to coat the flare connection part.
Pipe | Outer | Connection | Flare |
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diameter | torque | dimension | Flare shape (mm) | ||||
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|
| (D, mm) | (kgf•cm) | (L, mm) |
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| |
|
| ø 6.35 | 145~175 | 8.70~9.10 |
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| |
Flare |
| ø 9.52 | 333~407 | 12.80~13.20 | ±2° | R 0.4~0.8 | |
Flare | D | ||||||
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| |||||
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|
| 90° | ||||
connection | nut | ø 12.70 | 505~615 | 16.20~16.60 | |||
L | |||||||
| |||||||
part |
| ø 15.88 | 630~769 | 19.30~19.70 |
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| |
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|
|
| ||||
CAUTION
•Blowing nitrogen gas should be done when brazing the pipe.
•Make sure to use the provided flare nut.
•Make sure that there are no cracks when bending the pipe.
•Do not fasten the flare nut with excessive strength.
INSTALLATION PARTS
English 51
