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4. Tools
(1) Required Tools for R410A
Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc.
Accordingly, the tools to be used are classified into the following three types.
1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3) Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Explanation of symbols
: Newly prepared (It is necessary to use it exclusively with R410A, separately from those for R22 or R407C.)
: Former tool is available.
U
s
e
d
o t
o
Gauge manifold
C
h
a
g r
n i
g
h
o
s
e
Charging cylinder
Gas leak detector
Vacuum pump
V
a
c
u
u
m
p
u
m
p
i w
h t
c
F
a l
e r
o t
l o
B
e
n
d
r e
Refrigerant recovery device
Torque wrench
P
p i
e
c
u
t t
r e
Refrigerant canister
Brazing machine / Nitrogen gas
cylinder
Refrigerant charging balance
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as
the general tools.
(1) Vacuum pump
Use vacuum pump by attaching vacuum pump
adapter.
(2) Torque wrench
(3) Pipe cutter
(4) Reamer
(5) Pipe bender
(6) Level vial
Also prepare the following equipments for other installation method and run check.
(1) Clamp meter
(2) Thermometer
AMP Air Conditioning
s l
U
s
Vacuuming, charging refrigerant
and operation check
Charging refrigerant
Checking gas leak
Vacuum drying
o
u
n
e t
f - r
o l
w
V
a
c
u
u
m
d
y r
n i
g
F
a l
e r
p
o r
c
e
s s
n i
B
e
n
d
n i
g
p
o r
c
e
s s
Recovering refrigerant
Tightening flare nut
C
u
t t
n i
g
p
p i
e
s
Charging refrigerant
Brazing of pipes
Charging refrigerant
General tools (Conventional tools can be used.)
a
g
e
Exclusive to R410A
E
c x
u l
Unusable (Use the Refrigerant charging balance.)
Exclusive to R410A
Usable if a counter-flow preventive adapter is attached
R
2
2
g
f o
p
p i
e
s
U
s
a
n i
g
f o
p
p i
e
s
R
2
2
Exclusive to R410A
Exclusive to Ø12.7 mm and Ø15.9 mm
R
2
2
Exclusive to R410A
Enter the refrigerate name for identification
R
2
2
R22 (Existing article)
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench
(9) Hole core drill
(10)Hexagon wrench (Opposite side 4 mm)
(11)Tape measure
(12)Metal saw
(3) Insulation resistance tester
(4) Electroscope
14
12
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