19
REFRIGERANT PIPING
Refrigerant Piping
(Continued)
Measuring Instrument,
tool
Interchange
with R-22
Reason of Non-Interchange and Attention
(
◎
: Strictly Required)
Application
V
a
c
u
u
m
d
ry
in
g
R
e
fr
ig
e
ra
n
t
c
h
a
rg
in
g
Refrigerant
cylinder
□
(Pink)
Identification color is available outside the
refrigerant cylinder. (R410A: Pink)
◎
(Charging of refrigerant in the gas state is
prohibited). For non-azeotrope refrigerant
mixtures, strictly use liquid refrigerant for
charging.)
For refrigerant charging
Vacuum pump
○
◎
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.
For vacuum drying
Straightener for
vacuum pump
(Preventing
backflow)
□
Manifold gage
□
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.
For vacuuming drying;
holding in vacuum;
charging refrigerant;
confirming pressure
Charging hose
□
Charging bottle
Prohibited to
use
Use the scale for charging refrigerant
For refrigerant charging
Scale for
refrigerant
charging
○
For measuring
refrigerant charging
Refrigerant Gas
Leakage
Detector
□
Leak testing method for new refrigerant is
different from that of old refrigerant (R-22).
For gas leakage check
Summary of Contents for RAS-NP10CTS
Page 45: ...65MP3196 ...
