JOHNSON CONTROLS
7
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
TABLE OF CONTENTS (CONT'D)
SECTION 7 – MAINTENANCE ............................................................................................................................. 131
Valve Inspection ...........................................................................................................................................131
Solenoid Valves ............................................................................................................................................131
Pump Shut Off Valves ..................................................................................................................................131
Air Purging Valves and Draining Valves ....................................................................................................... 131
Purging Valves..............................................................................................................................................131
Start the Chiller After It Has Been Stopped for A Long Period .....................................................................132
Checks Before Operation Starts ..........................................................................................................132
Checks After Operation Starts .............................................................................................................132
Purge Procedure ..........................................................................................................................................132
Capacity Check Method of Vacuum Pump ................................................................................................... 132
Manual Method to Purge Non-condensable Gas Directly from Absorber with Vacuum Pump ..................... 133
Manual Method to Purge Non-condensable Gas from Purging Tank with Vacuum Pump ...........................134
Automatic Method to Purge Non-condensable Gas from Purging Tank ....................................................... 134
Refrigerant Refining Method ........................................................................................................................137
Manual Refrigerant Blow Down and Diluting Method ................................................................................... 137
Decrystallization Method ..............................................................................................................................138
Indications of Crystallization ................................................................................................................ 138
Decrystallization ..................................................................................................................................138
Precautions for De-crystallization ........................................................................................................ 139
Maintenance Items .......................................................................................................................................139
Refrigerant Pump Manual Stop ...........................................................................................................142
Purge Manual Start and Stop ..............................................................................................................142
Lifespan for Various Parts ............................................................................................................................142
Water Quality Control ...................................................................................................................................144
Chemical Water Treatment ...........................................................................................................................144
Replacement of Water ................................................................................................................................. 144
Treatment for Long Stoppage of the Absorption Chiller ...............................................................................145
Chemical Treatment ....................................................................................................................................145
Flow Speed in Tubes ................................................................................................................................... 145
Storage Method of the Chiller .......................................................................................................................150
Wet Storage Method ...........................................................................................................................150
Dry Storage Method ............................................................................................................................151
Precautions Against External Damage ......................................................................................................... 151
SECTION 8 – TROUBLESHOOTING ................................................................................................................... 157
Troubleshooting Performance Issues ...........................................................................................................161
Vacuum Pump ..............................................................................................................................................162
Abnormal Solution and Refrigerant Levels ................................................................................................... 163
Insufficient Vacuum Levels ........................................................................................................................... 164
Actions to Take Against Power Failure .........................................................................................................166
SECTION 9 - DECOMMISSIONING, DISMANTLING, AND DISPOSAL .............................................................167
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