Johnson Controls York YHAU-C - Page 6

Decrystallization method................................................................................................................ 150
Indications of crystallization................................................................................................ 151
Decrystallization.................................................................................................................... 151
Precautions for de-crystallization....................................................................................... 152
Maintenance items.......................................................................................................................... 152
Refrigerant pump manual stop.......................................................................................... 154
Purge manual stop and start.............................................................................................. 155
Lifespan for various parts.............................................................................................................. 156
Water quality control...................................................................................................................... 157
Chemical water treatment.............................................................................................................. 157
Replacement of water..................................................................................................................... 157
Treatment for long stoppage of the absorption chiller.............................................................. 158
Chemical treatment......................................................................................................................... 158
Flow speed in tubes........................................................................................................................ 158
Storage method of the chiller........................................................................................................ 158
Wet storage method....................................................................................................................... 159
Dry storage method........................................................................................................................ 159
Precautions against external damage.......................................................................................... 159
Troubleshooting......................................................................................................................... 169
Troubleshooting performance issues........................................................................................... 172
Vacuum pump.................................................................................................................................. 173
Abnormal solution and refrigerant levels.................................................................................... 173
Insufficient vacuum levels.............................................................................................................. 174
Actions to take against power failure........................................................................................... 175
Decommissioning, dismantling, and disposal........................................................................ 177
YHAU-C Single Effect Steam-Fired Absorption Chilleriv