JOHNSON CONTROLS
8
FORM 160.67-O2
ISSUE DATE: 10/9/2020
SECTION 5 – TROUBLESHOOTING ..................................................................................................................71
SECTION 6 - MAINTENANCE .............................................................................................................................73
Renewal Parts ................................................................................................................................................73
Checking System For Leaks ..........................................................................................................................73
Leak Testing During Operation .............................................................................................................. 73
Evacuation And Dehydration Of Unit .............................................................................................................. 73
Conducting R-22 Pressure Test......................................................................................................................74
Vacuum Testing ..............................................................................................................................................74
Vacuum Dehydration ......................................................................................................................................74
Operation ........................................................................................................................................................75
Refrigerant Charging ......................................................................................................................................75
Checking The Refrigerant Charge During Unit Shutdown ..............................................................................76
Handling Refrigerant For Dismantling And Repairs ........................................................................................76
Refrigerant Condensers And Evaporators ......................................................................................................76
General ..................................................................................................................................................76
Chemical Water Treatment ............................................................................................................................. 76
Cleaning Evaporator And Condenser Tubes ..................................................................................................76
Evaporator ............................................................................................................................................. 76
Condenser ............................................................................................................................................. 76
Tube Fouling ...................................................................................................................................................76
Tube Cleaning Procedures .............................................................................................................................77
Brush Cleaning of Tubes .......................................................................................................................77
Acid Cleaning Of Tubes .........................................................................................................................77
Commercial Acid Cleaning ............................................................................................................................. 77
Testing For Evaporator And Condenser ........................................................................................................77
Tube Leaks ............................................................................................................................................77
Compressor Maintenance ..............................................................................................................................78
Steam Condenser Condensate Pump Maintenance ......................................................................................78
Steam Condenser Vacuum Pump Maintenance.............................................................................................78
Turbine Internal Inspection ............................................................................................................................. 78
Check The Casing Interior For Foreign Material Before Closing. ...................................................................80
Electrical Controls ..........................................................................................................................................80
SECTION 7 - PREVENTIVE MAINTENANCE ....................................................................................................81
Compressor .................................................................................................................................................... 81
Leak Testing ...................................................................................................................................................81
Evaporator And Refrigerant Condenser .........................................................................................................81
Oil Return System ..........................................................................................................................................81
Electrical Controls ..........................................................................................................................................81
Steam Purity/Turbine Deposits .......................................................................................................................86
Overview ...............................................................................................................................................86
Steam Purity ................................................................................................................................................... 86
Effects Of Deposits And Harmful Ions On Turbine .........................................................................................86
Detection Of Deposits ....................................................................................................................................86
Detection Of Corrosion ................................................................................................................................... 86
Temperature ...................................................................................................................................................88
NOTES....................................................................................................................................................................89
TABLE OF CONTENTS (CONT'D)
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