Maintenance - Hitachi RCUE40AG2 Service Manual

Maintenance

This chapter describe the procedure of the maintenance of the Air cooled water chillers.
Content
6. Maintenance ......................................................................................149
6.1. Maintenance criteria ...................................................................................................150
6.2. Maintenance criteria of Screw Compressor................................................................152
6.3. Maintenance of Water Quality ....................................................................................153
6.3.1. Water to be used ............................................................................................................153
6.3.2. 6.3.2. 6.3.2. Criteria of Water Criteria of Water ............................................................................................................. Criteria of Water .............................................................................................................
6.3.3. Maintenance method of Water Quality ............................................................................155
6.4. 6.4. 6.4. Cleaning of water side heat exchanger ...................................................................... Cleaning of water side heat exchanger ...................................................................... Cleaning of water side heat exchanger
6.4.1. Cleaning method> ...........................................................................................................158
6.5. Check items in daily operation....................................................................................160
6.6. Caution on handling of R407C ...................................................................................160
6.6.1. Refrigerant .....................................................................................................................160
6.6.2. Refrigerant oil ..................................................................................................................161
6.6.3. Refrigeration cycle complete parts .................................................................................162
6.6.4. Reference materials ........................................................................................................162
6.7. Manual at compressor overall check and parts check................................................162
6.7.1. Collection of refrigerant ..................................................................................................162
6.7.2. 6.7.2. 6.7.2. Structure and Start-up method of Compressor Structure and Start-up method of Compressor .............................................................. Structure and Start-up method of Compressor ..............................................................
6.8. Refrigerant cycle diagrams .........................................................................................166
6.8.1. Refrigerant cycle diagram of Hitachi Air-Cooled Water Chiller
(RCUE 40, 50, 60, 70, 100, 120, 140, 180, 210, 280, 350 AG2) ...................................166
6.8.2. Refrigerant Cycle Diagram of Hitachi Air-Cooled Water Chiller
(RCUE 80, 160, 240, 320, 400 AG2) with economizer. ...................................................167
6.8.3. Refrigerant Cycle diagram of Hitachi Air-to-water Heat Pump Chiller
(RHUE 40, 50, 60, 70, 100, 120, 140, 180, 210AG2) .....................................................168
6.8.4. Refrigerant Cycle diagram of Hitachi Air-to-water Heat Pump Chiller
(RHUE 80, 160, 240 AG2) With economizer.) .................................................................169
6.9. Overhaul work ............................................................................................................170
6.10. Vacuuming Procedure ................................................................................................170
6.10.1. Vacuuming ......................................................................................................................170
6.10.2. Leave ..............................................................................................................................171
6.11. Additional refrigerant insertion ....................................................................................172
6.11.1. Confi rmation of tank ........................................................................................................172
6.11.2. Measurement device used for refrigerant insertion .........................................................173
6.11.3. Procedure for refrigerant insertion ..................................................................................173
6.11.4. Check of leakage position ...............................................................................................174
6.11.5. Caution at Replacement of Expansion Valve ..................................................................175
pag. 149
SMGB0003 rev.0 - 11/2006
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M a i n t e n a n c e
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