Maintenance Inspections
SiE25-110
104
Troubleshooting
1.2
Cautions in Handling New Refrigerant
The working pressure of the new refrigerant R-407C is rather high as compared to the
conventional refrigerants R-22, and the applicable refrigerant oil is different from one to R-22.
Therefore, some service work and tools for piping may not be allowed for use with the new
refrigerant.
Required tools
Special tools are required to carry out service work for the refrigerant circuit on units using the
new refrigerant. Select tools referring to the following table.
Compatibility of representative tools and devices used for piping work
Refrigerant
Previous refrigerant
New refrigerant
R-22 (Single refrigerant)
R-407C (Mixed refrigerant)
Refrigerating machine oil
Mineral oil (Suniso)
Synthetic oil (Ether oil)
Condensation pressure
1.84MPa (18.8kg/cm
2
)
2.01MPa (20.5kg/cm
2
)
Tool
Work process·Purpose
Compatibility with conventional tools
(used for R-22 refrigerant)
Pipe cutter
Refrigerant piping work
Pipe cutting
Compatible and can be used.
Flaring tool
Pipe flaring
Refrigerant oil
Applying on flare sections
Use special ether-base oil, ester-base oil,
alkylbenzene-base oil, or mixed oil of these oils.
Torque wrench
Jointing flare nuts
Compatible and can be used.
Expanding tool
(Expander)
Expanding in pipe connection
Pipe bender
Bending pipe
Nitrogen
Air tight test
Preventing oxidation inside pipes
Welder
Brazing pipes
Gauge manifold
From air tight test to
refrigerant additional
charging
Refrigerant charging with
vacuuming , and checking
equipment operation
Gauge manifold designed for the new refrigerant is
necessary since the pressure is high and cannot be
measured by conventional manifold.
Charge hose
Charge hose designed for the new refrigerant is
necessary since the refrigerant leaks and intrusion
of impurities can occur.
Vacuum pump
Vacuum drying
Compatible and can be used.
Pay utmost care for oil not to return into the unit
during pump stops operation.
Charging cylinder
Refrigerant additional
charging
Not required since a scale is used for refrigerant charging.
Scale for refrigerant charging
Compatible and can be used.
Gas leakage detector
Checking gas leakage
Detector designed for the new refrigerant is necessary.
(Detector for R134a can be used.)
(
)
Содержание SkyAir Super Inverter 70 D Series
Страница 11: ...SiE25 110 2...
Страница 15: ...Model Name and Power Supply SiE25 110 6 Model Name and Power Supply...
Страница 16: ...SiE25 110 Functions 7 Part 2 Functions 1 List of Functions 8 1 1 Functions 8...
Страница 31: ...Specifications SiE25 110 22 Specifications...
Страница 35: ...Wired Remote Controller SiE25 110 26 Remote Controller 1 2 Installation...
Страница 36: ...SiE25 110 Wired Remote Controller Remote Controller 27...
Страница 39: ...Wireless Remote Controller SiE25 110 30 Remote Controller...
Страница 63: ...Settings Concerning Maintenance SiE25 110 54 Field Setting FUYP...
Страница 64: ...SiE25 110 Settings Concerning Maintenance Field Setting 55 FHYP...
Страница 65: ...Settings Concerning Maintenance SiE25 110 56 Field Setting FAYP...
Страница 67: ...Settings Concerning Maintenance SiE25 110 58 Field Setting RZP100 125DV1 E RZP100DVAL E...
Страница 68: ...SiE25 110 Settings Concerning Maintenance Field Setting 59 RZP125 140DTAL...
Страница 107: ...Operation Range SiE25 110 98 Function and Operation 5 Operation Range 5 1 Operation Limits...
Страница 133: ...Procedure of Self Diagnosis by Remote Controller SiE25 110 124 Troubleshooting...
Страница 238: ...SiE25 110 Piping Diagrams Appendix 229 1 2 Twin System RZP100D RZP125D 3D034162...
Страница 240: ...SiE25 110 Wiring Diagrams Appendix 231 FHYP45BV1 FHYP60BV1 FHYP71BV1 FHYP100BV1 FHYP125BV1 3D027503...
Страница 241: ...Wiring Diagrams SiE25 110 232 Appendix FUYP71BV1 FUYP100BV1 FUYP125BV1 3D027747...
Страница 242: ...SiE25 110 Wiring Diagrams Appendix 233 FAYP71BV1 FAYP100BV1 3D027748...
Страница 243: ...Wiring Diagrams SiE25 110 234 Appendix 2 2 Outdoor Units 2 2 1 50Hz RZP71DV1 3D032604...
Страница 244: ...SiE25 110 Wiring Diagrams Appendix 235 RZP100DV1 RZP125DV1 3D032603...
Страница 245: ...Wiring Diagrams SiE25 110 236 Appendix 2 2 2 60Hz RZP71DVAL 3D032880B...
Страница 246: ...SiE25 110 Wiring Diagrams Appendix 237 RZP100DVAL 3D032881B...
Страница 247: ...Wiring Diagrams SiE25 110 238 Appendix RZP125DTAL RZP140DTAL 3D032882B...
Страница 251: ...SiE25 110 iv Index...