- 73 -
e) Flare tool (clutch type)
● The flare tool for R410A has a big clamping bar receiving hole, so as to set the copper pipe
portion protruding from the clamping bar during flaring to 0~0.5mm and have stronger elasticity
for the increased torque of EEV. This type of flare tool can also be used for R22 copper pipes.
f) Adjusting the scaled rule for the protruding portion (used when a conventional flare tool
(including clutch type) is used for flaring)
● A scaled rule with the thickness of 1.0mm helps setting the protruding portion of the copper
pipe in the clamp to 1.0~1.5mm.
g) Vacuum pump adapter
● In order to prevent the vacuum pump oil from returning into the charge hose, be sure to use an
adapter. The connection of the charge hose has two ports, one for conventional refrigerants
(7/16 UNF, 20 screw threads per inch) and one for R410A. If the vacuum pump oil (mineral oil)
is mixed with R410A, deposit may be produced, which will damage the appliance.
h) Refrigerant cylinder
● According to the U.S.A regulations, refrigerant cylinders
designed specifically for R410A are
marked with the refrigerant name and have pink coating.
i) Charging port and package for refrigerant cylinder
● According to the cap size of the charge hose, a charging port (1/2 UNF, 20 screw threads per
inch) and corresponding package are required.
j) Gas leakage detector
● Use a highly sensitive gas leakage detector
designed specifically for HFC refrigerants. For
R410A, the detection sensitivity is about 23g/ year.
(2) Frequently used tools
a) Vacuum pump
b) Torque wrench
For 1/4, side-to-center distance 17 mm x
(16 N · m)
(160 kgf · cm)
For 1/4, side-to-center distance 17 mm x
(18 N · m)
(180 kgf · cm)
For 3/8, side-to-center distance 22 mm x
(42 N · m)
(420 kgf · cm)
c) Pipe cutter
d) Driller
e) Screw driver (+,-)
f) Steel saw
g) Hollow drill (Φ65 or 70)
h) Hexagon wrench
(side-to-center distance 4 or 5
mm)
i) Wrench or monkey wrench
j) Tapeline
k) Thermometer
l) Clamping ammeter
m) Insulation resistance meter
(megameter)
n) Circuit tester
o) Pipe bender
(3) Applicability of tools for R410A to models using R22
Table 15 Applicability of tools for R410A to models using R22
Tools for R410A
Applicability to models using R22
a)
Manifold pressure gauge
X
b)
Charge hose
X
c)
Electronic loadcell scale for charging refrigerant
O
d)
Torque wrench (rating diameter 1/2, 5/8)
X
e)
Flare tool (clutch type)
O
f)
Scaled rule for adjusting protruding portion*
O
g)
Vacuum pump adapter
O
h)
Refrigerant cylinder
X
i)
Charging port and package for refrigerant cylinder
X
j)
Gas leakage detector
X
* Used when the conventional flare tool (clutch type) is used.
Note: If you have any questions, please consult your dealer.
Summary of Contents for SRC20MA-S
Page 10: ... 7 ...
Page 15: ... 12 3 ELECTRICAL WIRING DIAGRAM 3 1 Circuit diagram 20 25 35MA S ...
Page 16: ... 13 3 2 Circuit diagram 50MA S ...
Page 62: ... 59 12 Check method for outdoor unit 1 Circuit diagram of 20 25 and 35MA S outdoor units ...
Page 63: ... 60 2 Circuit diagram of 50MA S outdoor unit ...
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Page 107: ... 104 18 RYF141A005 PLATE BAFFLE 1 19 RYF111A003F BASE ASSY 1 ...
Page 111: ... 108 19 RYF111A003F BASE ASSY 1 ...
Page 115: ... 112 19 RYF111A003F BASE ASSY 1 ...
Page 119: ... 116 19 RYF111A002G BASE ASSY 1 ...
