Daikin VRV Plus Series General Information Manual page 169

Si33-003.book Page 167 Monday, June 25, 2001 9:06 AM
SiE33-003
New Refrigerant R-407C
1. Precautions in Servicing the Models with New-type Refrigerant.........168
2. Changes Required by New Refrigerants.............................................170
3. Refrigerant and Refrigerant Oil Characteristics ..................................171
4. Refrigerant Cylinders ..........................................................................174
5. Service Tools ......................................................................................176
6. Cautions During Service Operations
7. Operation Guideline ............................................................................181
8. Temperature-pressure Conversion Table for New Refrigerants .........182
9. Measures to Take in the Case of Gas Leaks ......................................183
10.Safety Precautions ..............................................................................185
11.Problems Resulting from Negligence of Caution Items.......................186
12.Difference Between Pascal and Conventional Pressure Unit .............187
13.Thermodynamic Characteristic Charts (HFC407C) ............................188
New Refrigerant R-407C
1.1 Tools Required .................................................................................... 168
1.2 Notes for Work Procedures ................................................................. 169
2.1 Changes Required by New Refrigerant............................................... 170
3.1 Refrigerant Characteristics .................................................................. 171
3.2 Refrigerant Oil Characteristics............................................................. 173
4.1 Cylinder Specifications ........................................................................ 174
4.2 Handling of Cylinders .......................................................................... 175
5.1 Tool Compatibility ................................................................................ 176
5.2 New Tools Required for HFCs and Reasons of Change..................... 177
(Changes Required by New Refrigerants) ..........................................180
6.1 The Three Basic Rules for Refrigerant Piping
Must Be More Strictly Observed.......................................................... 180
7.1 Operation Guideline............................................................................. 181
8.1 Pressure and Temperature.................................................................. 182
9.1 Gas Shortage ...................................................................................... 183
9.2 Measure for Gas Shortage .................................................................. 184
10.1 Safety Precautions .............................................................................. 185
11.1 Problems Resulting from Negligence of Caution Items ....................... 186
12.1 Comparison of MPa and kgf/cm²......................................................... 187
13.1 Thermodynamic Characteristics of R-407C......................................... 188
Part 3
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167