SiBE281013
Precautions for New Refrigerant (R-410A)
Appendix
189
•
Temperature scale indicates the relationship between pressure and temperature in gas
saturated state.
Differences
•
Change in pressure
•
Change in service port diameter
7. Charge hose for R-410A
Specifications
•
Working pressure 5.08 MPa (51.8 kg/cm
2
)
•
Rupture pressure 25.4 MPa (259 kg/cm
2
)
•
Available with and without hand-operate valve that prevents refrigerant from outflow.
Differences
•
Pressure proof hose
•
Change in service port diameter
•
Use of nylon coated material for HFC resistance
8. Charging cylinder
Specifications
•
Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder.
Differences
•
The cylinder can not be used for mixed refrigerant since mixing ratio is changed during
charging.
When R-410A is charged in liquid state using charging cylinder, foaming phenomenon is
generated inside charging cylinder.
(Hose with ball valve)
Can not be used
