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[2] Necessary Tools and Materials
Prepare the following tools and materials necessary for installing and servicing the unit.
[Necessary tools for use with R410A (Adaptability of tools that are for use with R22 and R407C)]
1. To be used exclusively with R410A (not to be used if used with R22 or R407C)
Tools/Materials
Gauge Manifold
Charging Hose
Refrigerant Recovery Equipment
Refrigerant Cylinder
Refrigerant Cylinder Charging Port
Flare Nut
2. Tools and materials that may be used with R410A with some restrictions
Tools/Materials
Gas leak detector
Vacuum Pump
Flare Tool
Refrigerant Recovery Equipment
3. Tools and materials that are used with R22 or R407C that can also be used with R410A
Tools/Materials
Vacuum Pump with a Check valve
Bender
Torque Wrench
Pipe Cutter
Welder and Nitrogen Cylinder
Refrigerant Charging Meter
Vacuum Gauze
4. Tools and materials that must not be used with R410A
Tools/Materials
Charging Cylinder
Tools for R410A must be handled with special care; keep moisture and dust from entering the
cycle.
Use
Evacuating, refrigerant charging
Evacuating, refrigerant charging
Refrigerant recovery
Refrigerant charging
Refrigerant charging
Connecting the unit to piping
Use
Detection of gas leaks
Vacuum drying
Flare machining of piping
Recovery of refrigerant
Use
Vacuum drying
Bending pipes
Tightening flare nuts
Cutting pipes
Welding pipes
Refrigerant charging
Checking vacuum degree
Use
Refrigerant Charging
- 7 -
Notes
5.09MPa on the High-pressure side.
Hose diameter larger than the conventional ones.
Write down the refrigerant type.
Pink in color at the top of the cylinder.
Hose diameter larger than the conventional ones.
Use Type-2 Flare nuts.
(That are in compliance with JIS B 8607).
Notes
The ones for HFC type refrigerant may be used.
May be used if a reverse flow check adaptor is
attached.
Changes have been made in the flare machining
dimension. Refer to the next page.
May be used if designed for use with R410A.
Notes
Only ø 12.70 (1/2") and ø 15.88 (5/8") have a
larger flare machining dimension.
Notes
Must not be used with R410A-type units.
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