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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
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.
Also prepare the following equipments for other installation method and run check.
(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 4mm)
(11)Tape measure
(12)Metal saw
(1) Clamp meter
(2) Thermometer
(3) Insulation resistance tester
(4) Electroscope
(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.
Used tools Usage Proper use of tools/parts
Gauge manifold
Vacuuming, charging refrigerant
and operation check
Exclusive to R410A
Charging hose Exclusive to R410A
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
Vacuum pump with counterflow Vacuum drying R22 (Existing article)
Flare tool Flare processing of pipes Usable by adjusting size
Bender Bending processing of pipes R22 (Existing article)
Refrigerant recovery device Recovering refrigerant Exclusive to R410A
Torque wrench Tightening flare nut Exclusive to Ø1/2” (12.7 mm) to Ø5/8” (15.9 mm)
Pipe cutter Cutting pipes R22 (Existing article)
Welding machine/Nitrogen gas
cylinder
Welding of pipes R22 (Existing article)
: Newly prepared (It is necessary to use it exclusively with R410A, separately from those for R22 or R407C.)
: Former tool is available.
Refrigerant canister Charging refrigerant Exclusive to R410A
Enter the refrigerant name for identification.
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