Sterlco GC Series Central Chiller - Manual (Page 3)

GC Series Central Chillers iii
TABLE OF CONTENTS
CHAPTER 1:
SAFETY ................................................................ 5
1-1 How to Use This Manual .............................................................................................. 5
Safety Symbols Used in this Manual ..................................................................... 5
1-2 Warnings and Precautions ........................................................................................... 6
1-3 Responsibility ............................................................................................................... 6
CHAPTER 2: FUNCTIONAL DESCRIPTION ............................. 7
2-1 Models Covered in This Manual .................................................................................. 7
2-2 General Description ..................................................................................................... 7
Typical Applications ............................................................................................... 7
System Limitations ................................................................................................ 7
Chilled Water Circuit .............................................................................................. 8
Refrigeration Circuit ............................................................................................... 8
2-3 Standard Features ..................................................................................................... 11
Mechanical Features ........................................................................................... 11
Electrical Features ............................................................................................... 11
Refrigeration Features ......................................................................................... 11
Controller Features .............................................................................................. 12
Other Features .................................................................................................... 12
2-4 Safety Devices and Interlocks .................................................................................... 12
Crankcase Heater ............................................................................................... 12
High Pressure Cutout .......................................................................................... 13
Pressure Transducers ......................................................................................... 13
Flow Switch ......................................................................................................... 14
Remote Start/Stop Interlock ................................................................................ 14
2-5 Optional Features ...................................................................................................... 14
CHAPTER 3: INSTALLATION .................................................. 16
3-1 Uncrating .................................................................................................................... 16
3-2 Rigging and Equipment Movement ............................................................................ 16
3-3 Electrical Connections ............................................................................................... 16
3-3 Process Water Connections ...................................................................................... 17
3-4 Galvanic Corrosion Considerations ........................................................................... 17
3-5 Water Treatment Considerations ............................................................................... 17
3-6 Condenser Considerations ........................................................................................ 18
Water-Cooled Chiller Condensers ....................................................................... 18
Remote Air-Cooled Chiller Condensers .............................................................. 19
3-7 Checking Motor Direction ........................................................................................... 25
Three-Phase Compressors ................................................................................. 25
Condenser Fan .................................................................................................... 25
3-8 Fluid Temperature Considerations ............................................................................. 26
3-9 Initial Start-Up ............................................................................................................ 28
3-10
Finishing Setup: Setting Up Passwords ..................................................................... 28
CHAPTER 4: OPERATION ....................................................... 30
4-1 Panel Buttons, Indicator Lights, and Switches ........................................................... 30
Microprocessor Controller ................................................................................... 30
4-2 Initial Start-up ............................................................................................................. 31
4-3 PGD1 Status Screens ................................................................................................ 33
4-4 Access Levels ............................................................................................................ 38
4-5 Controller Setpoints .................................................................................................... 38
Adjusting the Setpoint ......................................................................................... 39
4-6 Alarms ........................................................................................................................ 40
4-7 Optional Communications .......................................................................................... 40
CHAPTER 5: MAINTENANCE ................................................. 42