Type of work Ordinary tools R410A tools
Refrigerant charging Electronic scale for refrigerant
charging Refrigerant
cylinderCharging orifice and
packing for refrigerant cylinder
Brazing(Replacing refrigerating
cycle part*1)
Nitrogen blow set (be sure to
use nitrogen blowing for all
brazing), and brazing), and
brazing machine
*1) Always replace the dryer of the outdoor unit at the same time. The replacement dryer is
wrapped in a vacuum pack. Replace it last among the refrigerating cycle parts. Start brazing as
soon as you have opened the vacuum pack, and beginthe vacuuming operation within 2 hours.
10.2.2. R410A Tools
1. Cooper tube gauge for clearance adjustment / (used when flaring
with the conventional flaring tool (clutch type))
- This gauge makes it easy to set the clearance for the copper
tube to 1.0-1.5 mm from the clamp bar of the flaring tool.
2. Flaring tool (clutch type)
- In the R410A flaring tool, the receiving hole for the clamp bar
is enlarged so the clearance from the clamp bar can be set to 0
-0.5 mm, and the spring inside the tool is strengthened to
increase the strength of the pipe-expanding torque.This
flaring tools can also be used with R22 piping, so we
recommend that you select it if you are buying a new flaring
tool.
3. Torque wrenches
Fig. 1 Copper tube gauge for clearance adjustment
Fig. 2 Flaring tool (clutch type)
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