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4.Tools
Tools exclusive for R32/R410A (The following tools for R32/R410A are required.)
c: R32/R410A tools available
U: Partly unavailable, ¯: R32/R410A tools unavailable
Note 1 When flaring is carried out for R32/R410A using the conventional flare tools, adjustment of projection margin
is necessary. For this adjustment, a copper pipe gauge, etc. are 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 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 equipments but also a fire etc.
No
Installation/service tools
Use
Applicability to R32/
R410A air conditioner or
not
Applicability to R22 air
conditioner or not
Tools / Equipment specification
1 Flare tool Clutch type Pipe flaring cc
2
Copper pipe gauge
for adjusting
projection margin
—
Flaring by
conventional
flare tool
c —
3 Torque wrench —
Tightening of
flare nut
c¯
4 Gauge manifold
Port size 1/2"-
20UNF (5/16"
Flare)
Evacuating,
refrigerant
charge, run
check, etc.
c Note 2 ¯
5 Charge hose High-voltage c¯
6 Vacuum pump — Vacuum drying
c Note 3
1/2"-20UNF(5/16" Flare)
U Connection diameter
1/4"
7
Vacuum pump
adapter
— Vacuum drying
c Note 4
1/2"-20UNF(5/16" Flare)
U Connection diameter
1/4"
8
Electronic balance
for refrigerant
charging
For 10 kg or
20 kg cylinder
Refrigerant
charge
cc
9 Leakage detector —
Gas leakage
check
c Note 5 c Note 5
10 Refrigerant cylinder —
Refrigerant
charge
¯ Note 6 ¯
11
Refrigerant
recovery cylinder
Exclusive for
R32
Refrigerant
recovery
container
¯ Note 7 ¯
12
Refrigerant
recovery device
—
Refrigerant
recovery
device
c Note 8
U Connection diameter
1/4"
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