– 18 –
4. Tools
Note 1
When flaring is carried out for R410A or R32 using the conventional flare tools, adjustment of
projection margin is necessary. For this adjustment, a copper pipe gauge, etc. is necessary.
Note 2
When saturation temperature is described, the gauge manifold differs for R410A and R32.
If saturation temperature reading is required, special tools exclusive for R32 are required.
Note 3
Since R32 has a slight possibility of burning, be sure to use the tools corresponding to R32.
Note 4
Like R410, a Vacuum pump adapter needs installing to prevent a Vacuum pump oil (mineral oil) from
flowing backward into the Charge hose. Mixing of the Vacuum pump oil into R32 refrigerant may cause
a trouble such as generation of sludge, clogging of capillary, etc.
Note 5
Be sure to use those tools after confirming they correspond to each refrigerant.
Note 6
For a refrigerant cylinder exclusive for R32, the paint color (or label color) of the cylinder is set to the
specified color (light blue) together with the indication of the refrigerant name.
Note 7
Although the container specification is the same as that of R410A, use a recovering container
exclusive for R32 to avoid mixing with other refrigerants.
Note 8
Be careful for miss charging of the refrigerant during work. Miss charging of the refrigerant type may
cause not only damage of the equipment but also a fire etc.
: R410A tool
s
a
v
a
il
ab
le
: P
a
rtly
u
n
a
v
a
il
ab
le,
: R410A tool
s
u
n
a
v
a
il
ab
le
No.
In
s
t
a
ll
a
tion/
s
ervice tool
s
Tool
s
/ Eq
u
ipment
s
pecific
a
tion
1 Fl
a
re tool
Cl
u
tch type
Pipe fl
a
ring
U
s
e
Applic
ab
ility to R32
a
ir
conditioner or not
Applic
ab
ility to R22
a
ir
conditioner or not
5 Ch
a
rge ho
s
e
High-volt
a
ge
3 Torq
u
e wrench
—
Tightening of
fl
a
re n
u
t
6 V
a
c
uu
m p
u
mp
—
V
a
c
uu
m
drying
Note 3
1/2"-20UNF(5/16" Fl
a
re)
Connection di
a
meter
1/4"
7 V
a
c
uu
m p
u
mp
a
d
a
pter
—
V
a
c
uu
m
drying
Note 4
1/2"-20UNF(5/16" Fl
a
re)
Connection di
a
meter
1/4"
8 Electronic
ba
l
a
nce for
refriger
a
nt ch
a
rging
For 10 kg or
20 kg cylinder
Refriger
a
nt
ch
a
rge
9 Le
a
k
a
ge detector
—
G
as
le
a
k
a
ge
check
Note 5
Note 5
10 Refriger
a
nt cylinder
—
Refriger
a
nt
ch
a
rge
Note 6
11 Refriger
a
nt recovery
cylinder
Excl
us
ive for
R32
Refriger
a
nt
recovery cont
a
iner
Note 7
12 Refriger
a
nt recovery
device
—
Refriger
a
nt
recovery device
Note 8
Connection di
a
meter
1/4"
4 G
au
ge m
a
nifold
Port
s
ize
1/2"-20UNF
(5/16" Fl
a
re)
Ev
a
c
ua
ting,
refriger
a
nt
ch
a
rge, r
u
n
check, etc.
Note 2
2
Copper pipe g
au
ge for
a
dj
us
ting projection
m
a
rgin
—
—
Fl
a
ring
b
y
convention
a
l
fl
a
re tool
In
a
ddition to the
ab
ove excl
us
ive tool
s
, the following eq
u
ipment i
s
nece
ssa
ry
as
the gener
a
l tool
s
.
General tool
s
1) Pipe c
u
tter
6)
S
p
a
nner or Adj
us
t
ab
le wrench
2) Re
a
mer
7)
Hole
core
drill
3) Pipe
b
ender
8)
T
a
pe me
asu
re
4) Level vi
a
l
9)
Met
a
l
sa
w
5)
S
crewdriver (+, –)
Al
s
o prep
a
re the following eq
u
ipment for other in
s
t
a
ll
a
tion method
a
nd r
u
n check.
1) Cl
a
mp
meter
3)
In
su
l
a
tion re
s
i
s
t
a
nce te
s
ter (Megger)
2)
Thermometer
4)
Electro
s
cope
