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Step 2: Remove Burrs
Burrs can affect the air-tight seal of refrigerant piping
connection. They must be completely removed.
1. Hold the pipe at a downward angle to prevent burrs from
falling into the tubing.
2. Using a reamer or deburring tool, remove all burrs from
the cut section of the tubing.
3. Take care not to score the wall during deburring. This will
cause a leak.
Step 3: Flare Tubing Ends
Proper flaring is essential to achieve an airtight seal.
1. After removing burrs from cut tube, seal the ends with PVC
tape to prevent foreign materials from entering the tube.
2. Sheath the tubing with insulating material.
3. Place flare nuts on both ends of tubing. Make sure they are
facing in the right direction, because they cannot be put on
or have their direction changed after flaring. See Fig. 5.3.
4. Remove PVC tape from ends of the tub when ready to
perform flaring work.
5. Clamp flare form on the end of the tube. The end of the tube
must extend beyond the edge of the flare form in accordance
with the dimensions shown in the table below. See Fig. 5.4.
Fig. 5.5.
