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REFRIGERANT PIPING
Measuring Instrument,
tool
Refrigerant
cylinder
Vacuum pump
Straightener for
vacuum pump
(Preventing
backflow)
Manifold gage
Charging hose
Charging bottle
Scale for
refrigerant
charging
Refrigerant Gas
Leakage
Detector
19
Refrigerant Piping
(Continued)
Interchange
Reason of Non-Interchange and Attention
with R-22
Identification color is available outside the
refrigerant cylinder. (R410A: Pink)
□
◎ (Charging of refrigerant in the gas state is
(Pink)
prohibited). For non-azeotrope refrigerant
mixtures, strictly use liquid refrigerant for
charging.)
○
◎ May use existing vacuum pump. But to
prevent the oil inside the vacuum pump
flowing backward to the refrigerant pipe side
□
after the vacuum pump is shut down, a
"Straightener for the vacuum pump" must be
added.
□
Compared to old refrigerant (R-22), new
refrigerant (R410A) has higher pressure
resistant standard. Therefore, they are not
exchangeable.
[Connection screw specification of R410A:
UNF1/2]
◎ Use of pressure gage for old refrigerant
□
(R-22) is prohibited. If mineral residue
attached in the gage flows to the air
conditioner, it may cause sludge to form and
clog the circulation system or cause failure
of the compressor, etc.
Prohibited to
Use the scale for charging refrigerant
use
○
Leak testing method for new refrigerant is
□
different from that of old refrigerant (R-22).
( ◎ : Strictly Required)
Application
For refrigerant charging
For vacuum drying
For vacuuming drying;
holding in vacuum;
charging refrigerant;
confirming pressure
For refrigerant charging
For measuring
refrigerant charging
For gas leakage check
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