– 16 –
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. 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 equipment but also a fire etc.
: R410A tools available
: Partly unavailable, : R410A tools unavailable
No.
Installation/service tools
Tools / Equipment specification
1 Flare tool Clutch type Pipe flaring
Use
Applicability to R32 air
conditioner or not
Applicability to R22 air
conditioner or not
5 Charge hose High-voltage
3 Torque wrench —
Tightening of
flare nut
6 Vacuum pump —
Vacuum
drying
Note 3
1/2"-20UNF(5/16" Flare)
Connection diameter
1/4"
7 Vacuum pump adapter —
Vacuum
drying
Note 4
1/2"-20UNF(5/16" Flare)
Connection diameter
1/4"
8
Electronic balance for
refrigerant charging
For 10 kg or
20 kg cylinder
Refrigerant
charge
9 Leakage detector —
Gas leakage
check
Note 5
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
Note 8
Connection diameter
1/4"
4 Gauge manifold
Port size
1/2"-20UNF
(5/16" Flare)
Evacuating,
refrigerant
charge, run
check, etc.
Note 2
2
Copper pipe gauge for
adjusting projection
margin
——
Flaring by
conventional
flare tool
In addition to the above exclusive tools, the following equipment is necessary as the general tools.
General tools
1) Pipe cutter 6) Spanner or Adjustable wrench
2) Reamer 7) Hole core drill
3) Pipe bender 8) Tape measure
4) Level vial 9) Metal saw
5) Screwdriver (+, –)
Also prepare the following equipment for other installation method and run check.
1) Clamp meter 3) Insulation resistance tester (Megger)
2) Thermometer 4) Electroscope
4. Tools
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