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.)
(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.
UsageUsed tools Proper use of tools/parts
Gauge manifold
Vacuuming, charging
refrigerant and operation check
Exclusive to R410A
Exclusive to R410ACharging hose
Charging cylinder Charging refrigerant Unusable (Use the Refrigerant charging balance.)
Gas leak detector Checking gas leak Exclusive to R410A
Vacuum pump Vacuum drying Usable if a counter-flow preventive adapter is attached
R22 (Existing article)Vacuum dryingVacuum pump with counterflow
Usable by adjusting sizeFlare processing of pipesFlare tool
R22 (Existing article)Bending processing of pipesBender
Refrigerant recovery device
Recovering refrigerant Exclusive to R410A
Torque wrench Tightening flare nut Exclusive to Ø1/2"(12.7mm) to Ø5/8"(15.9mm)
R22 (Existing article)Cutting pipesPipe cutter
Refrigerant canister Charging refrigerant
Exclusive to R410A
Enter the refrigerate name for identification
Brazing machine/
Nitrogen gas cylinder
R22 (Existing article)
Brazing of pipes
Refrigerant charging balance Charging refrigerant R22 (Existing article)
General tools (Conventional tools can be used.)
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
(7) Screwdriver (+, –)
(8) Spanner or Monkey wrench
(9) Hole core drill
(10)Hexagon wrench (Opposite side 0.16" (4mm)
Also prepare the following equipments for other installation method and run check.
(1) Clamp meter
(2) Thermometer
(3) Insulation resistance tester
(4) Electroscope
− 13 −
: Former tool is available.
(Note 2) Charging cylinder for R410A is being currently developed.
(11)Tape measure
(12)Metal saw
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