–4–
[3] Necessary Apparatus and Materials and Notes on Their Handling
The following tools should be marked as dedicated tools for R407C.
<<Comparison of apparatus and materials used for R407C and for R22>>
Apparatus Used
Use
R22
R407C
Gauge manifold
Evacuating, refrigerant filling
Current product
Charging hose
Operation check
Current product
Charging cylinder
Refrigerant charging
Current product
Do not use
Gas leakage detector
Gas leakage check
Current product
Shared with R134a
Refrigerant collector
Refrigerant collection
R22
For R407C use only
Refrigerant cylinder
Refrigerant filling
R22
Identification of dedi-
cated use for R407C:
Record refrigerant
name and put brown
belt on upper part of
cylinder.
Vacuum pump
Vacuum drying
Current product
Can be used by attach-
ing an adapter with a
check valve.
Vacuum pump with a check valve
Current product
Flare tool
Flaring of pipes
Current product
Bender
Bending of pipes
Current product
Application oil
Applied to flared parts
Current product
Ester oil or Ether oil or
Alkybenzene (Small
amount)
Torque wrench
Tightening of flare nuts
Current product
Pipe cutter
Cutting of pipes
Current product
Welder and nitrogen cylinder
Welding of pipes
Current product
Refrigerant charging meter
Refrigerant charging
Current product
Vacuum gauge
Checking the vacuum degree
Current product
Symbols:
To be used for R407C only.
Can also be used for conventional refrigerants.
Tools for R407C must be handled with more care than those for conventional refrigerants. They must not come into contact
with any water or dirt.
