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Precautions for New Refrigerant (R-410A)
SiUS28-902_B
170
Appendix
• 1/4"
5/16" (2min
2.5min)
• No oil is used in pressure test of gauges.
For prevention of contamination
• 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 737 psi (51.8 kg/cm
2
)
• Rupture pressure 3685 psi (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. Weigher for refrigerant charge
Specifications
• High accuracy
TA101A (for 10-kg cylinder) = ± 2g
TA101B (for 20-kg cylinder) = ± 5g
• Equipped with pressure-resistant sight glass to check liquid refrigerant charging.
• A manifold with separate ports for HFCs and previous refrigerants is equipped as standard
accessories.
Differences
• Measurement is based on weight to prevent change of mixing ratio during charging.
(Hose with ball valve)