Daikin VRV - WII, Service Manual

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SiUS30-604 Precautions for New Refrigerant (R-410A)
Precautions for New Refrigerant (R-410A) 289
4. Leak tester
„
Specifications
2
Hydrogen detecting type, etc.
2
Applicable refrigerants
R-410A, R-407C, R-404A, R-507A, R-134a, etc.
„
Differences
2
Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects
hydrogen.
5. Refrigerant oil
„
Specifications
2
Contains synthetic oil, therefore it can be used for piping work of every refrigerant cycle.
2
Offers high rust resistance and stability over long period of time.
„
Differences
2
Can be used for R-410A and R-22 units.
6. Gauge manifold for R-410A
„
Specifications
2
High pressure gauge
15 to 770 psi (-76 cmHg to 53 kg/cm
2
)
2
Low pressure gauge
15 to 550 psi (-76 cmHg to 38 kg/cm
2
)