4 
 
6.6.6 Purge ............................................................................................................................................... 89 
6.6.7 Auxiliary equipment ......................................................................................................................... 89 
6.6.8 Describe chiller cycles ..................................................................................................................... 89 
6.6.9 Review maintenance ....................................................................................................................... 89 
6.6.10 Safety devices and procedures ..................................................................................................... 89 
6.6.11 Check operator knowledge ............................................................................................................ 89 
6.7 Surge prevention trouble shooting guide:............................................................................................... 90 
7. OPERATING INSTRUCTIONS .................................................................................................................... 92 
7.1 operator duties ........................................................................................................................................ 92 
7.2 to start the chiller .................................................................................................................................... 92 
7.3 Check the running system ...................................................................................................................... 92 
7.4 To stop the chiller ................................................................................................................................... 93 
7.5 After Limited Shutdown .......................................................................................................................... 93 
7.6 Preparation for Extended Shutdown ...................................................................................................... 93 
7.7 After Extended Shutdown ....................................................................................................................... 93 
7.8 Cold Weather Operation ......................................................................................................................... 93 
7.9 Manual Guide Vane Operation ............................................................................................................... 94 
7.10 Service and operation Log ................................................................................................................... 94 
7.11 Chiller Idle Requirement ....................................................................................................................... 95 
7.11.1 Be idle for a short time: .................................................................................................................. 95 
7.11.2 Be idle for a long time: ................................................................................................................... 95 
8. PURGE OPERATION SEQUENCE ............................................................................................................. 95 
8.1 Purge Operating Modes ......................................................................................................................... 95 
8.2 Non-condensable Gas Pump Out .......................................................................................................... 95 
8.3 Carbon Tank and Regeneration Subsystem .......................................................................................... 95 
9.  MAINTENANCE ........................................................................................................................................ 96 
9.1 General maintenance ............................................................................................................................. 96 
9.1.1 Soldering and welding ..................................................................................................................... 97 
9.1.2 Refrigerant properties ...................................................................................................................... 97 
9.1.3 Adding Refrigerant ........................................................................................................................... 97 
9.1.4 Adjusting the Refrigerant Charge .................................................................................................... 97 
9.1.5 Refrigerant Leak Testing ................................................................................................................. 97 
9.1.6 Leak Rate ......................................................................................................................................... 97 
9.1.7 Test After Service, Repair, or Major Leak ....................................................................................... 97 
9.1.8 Repair the Leak, Retest, and Apply Standing Vacuum Test ........................................................... 98 
9.1.9 Checking Guide Vanes .................................................................................................................... 98 
9.1.10 Trim Refrigerant Charge ................................................................................................................ 99 
9.2 Weekly maintenance ............................................................................................................................ 100 
9.2.1 Check the Refrigerant Lubrication System .................................................................................... 100 
9.2.2 Check for Leaks / purge operation................................................................................................. 101 
9.3 Scheduled maintenance ....................................................................................................................... 101 
9.3.1 Service On time ............................................................................................................................. 101 
9.3.2 Inspect the Control Panel .............................................................................................................. 102 
9.3.3 Inspect Purge ................................................................................................................................. 102 
9.3.4 Purge Unit Maintenance ................................................................................................................ 102