Daikin VRVIII-S Service Manual page 249

Precautions for New Refrigerant (R-410A)
4. Leak tester
! Specifications
2 Hydrogen detecting type, etc.
2 Applicable refrigerants
! Differences
2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects
5. Refrigerant oil (Air compal)
! 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
2 Low pressure gauge
2 1/4" → 5/16" (2min → 2.5min)
2 No oil is used in pressure test of gauges.
238
R-410A, R-407C, R-404A, R-507A, R-134a, etc.
hydrogen.
- 0.1 to 5.3 MPa (-76 cmHg to 53 kg/cm
- 0.1 to 3.8 MPa (-76 cmHg to 38 kg/cm
→ For prevention of contamination
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Precautions for New Refrigerant (R-410A)
SiENBE34-703