Panasonic NR-B203G-S7, Service Manual

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Caution:
a.
b.
1.
2.
3.
IX. TOOLS FOR REPAIRING REFRIGERATING UNIT HFC-134a
Conventional repairing devices for CFC-12 can not connect with repairing devices for HFC-134A.
Because the shape of fitting for HFC-134A (M10 x P1.5 mm) is different from conventional ones.
When the fitting for CFC-12 use is connected with the charge pipe (yellow), and then turn the switch to
CFC-12 use, the adaptor can be used for vacuum pumping of CFC-12 refrigeratirng unit.
Be sure connect the adaptor with vacuum pump, so it that the vacuum pump can be used for both CFC-
12 and HFC-134a.
Since the inside of manifold gauge and charge hoses are vacuum state after vacuum pumping, the oil of
vacuum pumping may flow into HFC-134a refrigerant unit.The adaptor prevents the oil from flowing
into the refrigerating unit.
Before running the vacuum pump, connect the charge pipe (yellow) with the fitting for HFC-1354a use,
and then turn the switch to HFC-134a use.
Coupler Plug ( High Pressure Side ) 4mm
Coupler Socket
Coupler Plug ( Low Pressure Side ) 6.33 / 8mm
Process-Tube-Fitting
( 6.35 mm )
Process-Tube-Fitting
( 4 mm )
Charge Adaptor
Charge Cylinder
Blue
Yellow
Adaptor
Red
Manifol Gauge
Control Valve
Charge Hose
Vacuum Pump
(utk CFC-12/HFC-134a)
Fitting for Vacuum Pump
Fitting for
CFC-12
Switch
( CFC-12 / HFC-134a )
Fitting for
HFC-134a
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