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e) Flare tool (clutch type)
•A flare tool for R410A is provided with a large clamp bar receiving hole so that the projection of the copper pipe from the
clamp bar can be set at 0~0.5 mm in flare processing, and also features higher spring strength for increased expansion pipe
torque. This flare tool can also be used for R22 copper pipe.
f) Gauge for projection adjustment (used when flare processing is made by using conventional flare tool [clutch type])
A gauge 1.0 mm in thickness which helps in easily setting the projection of the copper pipe from the clamp bar at 1.0~1.5 mm.
g) Vacuum pump adapter
It is necessary to use an adapter for preventing vacuum pump oil from flowing back to the charge hose. The charge hose
connecting part has two ports - one for conventional refrigerant (7/16 UNF 20 threads per inch) and the other for R410A. If
the vacuum pump oil (mineral) mixes with R410A, a sludge may occur and damage the equipment.
h) Refrigerant cylinder
•A refrigerant cylinder exclusive for R410A comes identified with refrigerant name and is coated with pink paint as desig-
nated by the ARI, U.S.A.
i) Charge port and packing for refrigerant cylinder
According to the charge hose’s cap size, a charge port with 1/2 UNF 20 threads per inch and corresponding packing are
required.
j) Gas leakage detector
•A high sensitivity gas leakage detector exclusive for HFC refrigerant is used. In the case of R410A, the detection sensitivity
is about 23g per year.
(2) General tools
a) Vacuum pump
b) Torque wrench
for 1/4: opposite side 17 mm ×
for 1/4: opposite side 17 mm ×
for 3/8: opposite side 22 mm ×
c) Pipe cutter
d) Reamer
e) Screwdriver (+, -)
f) Hacksaw
(3) Applicability of R410A tools to R22 model
g) Hole core drill (ø65 or 70)
h) Hexagonal wrench (opposite side 4 or 5 mm)
i) Spanner, or monkey wrench
j) Tape measure
k) Thermometer
l) Clamping ampere meter
m) Insulation resistance tester (mega tester)
n) Electro circuit tester
o) Pipe bender
(16 N·m)
(160 kgf·cm)
(18 N·m)
(180 kgf·cm)
(42 N·m)
(420 kgf·cm)
Table 15. Applicability of R410A tools to R22 model
Tools for R410A Applicable to R22 model
a) Gauge manifold
b) Charge hose
c) Electronic balance for refrigerant charging
d) Torque wrench (nominal diameter 1/2, 5/8)
e) Flare tool (clutch type)
f) Gauge for projection adjustment*
g) Vacuum pump adapter
h) Refrigerant cylinder
i) Charge port and packing for refrigerant cylinder
j) Gas leakage detector
* Used when conventional flare tool (clutch type) is used.
Note: For inquiry, contact your agent.
138


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