Sterling 882.93092.00

GP Series Portable Chillers Chapter 2: Functional Description 12 of 64

Figure 1: Optional Pump Amperages

Voltage Construction HP Full Load Amps

460/3/60 SS 1 1.7

1.5 2.3

2 4.0

3 4.2

5 8.2

10 12.0

Contents

Main GP Series Portable Chillers Shipping Information Table of Contents CHAPTER 1: SAFETY................................................................ 5 CHAPTER 2: FUNCTIONAL DESCRIPTION............................. 7 CHAPTER 3: INSTALLATION..................................................13 CHAPTER 4: OPERATION.......................................................26 CHAPTER 5: MAINTENANCE ................................................. 36 Chapter 1: Safety 1-1 How to Use This Manual 1-2 Warnings and Precautions 1-3 Responsibility Chapter 2: Functional Description 2-1 Models Covered in This Manual 2-2 General Description 2-3 Standard Features 2-4 Safety Devices and Interlocks 2-5 Optional Features Page Page Chapter 3: Installation 3-1 Uncrating 3-2 Electrical Connections 3-3 Process Water Connections 3-4 Bypass Valve Considerations 3-5 Galvanic Corrosion Considerations 3-6 Water Treatment Considerations 3-7 Condenser Considerations Page Page GP Series Portable Chillers Chapter 3: Installation 18 of 64 Figure 4: Discharge Line Sizing Page 3-8 Checking Motor Direction 3-9 Water Reservoir GP Series Portable Chillers Chapter 3: Installation 22 of 64 Figure 6: Ethylene Glycol and Propylene Glycol Curves 3-10 Automatic Water Make-Up Option 3-11 Initial Start-Up 3-12 Finishing Setup: Setting Up Passwords Page Page Chapter 4: Operation 4-1 Panel Buttons, Indicator Lights, and Switches 4-2 Initial Start-up Page 4-3 Status Screens Page 4-4 Access Levels GP Series Portable Chillers Chapter 4: Operation 32 of 64 4-5 Controller Setpoints Page 4-6 Alarms 4-7 Optional Communications Page Chapter 5: Maintenance 5-1 Lubrication 5-2 Filter Cleaning 5-3 Maintaining the Condenser 5-4 Maintaining the Evaporator 5-5 Evaporator Process Piping Y-Strainer 5-6 Preventative Maintenance Service GP Series Portable Chillers Chapter 6: Troubleshooting 38 of 64 Chapter 6: Troubleshooting GP Series Portable Chillers Chapter 6: Troubleshooting 39 of 64 GP Series Portable Chillers Chapter 7: Appendix 40 of 64 Chapter 7: Appendix 7-1 Returned Material Policy Credit Returns 7-2 Technical Assistance GP Series Portable Chillers Chapter 7: Appendix 42 of 64 7-3 Specifications Air-Cooled Portable Chillers G-PAC-20 PERFORMANCE (NOMINAL DESIGN CONDITIONS) G-PAC-30 PERFORMANCE (NOMINAL DESIGN CONDITIONS) G-PAC-40 G-PAC-50 GP Series Portable Chillers Chapter 7: Appendix 44 of 64 Water-Cooled Portable Chillers G-PWC-20 PERFORMANCE (NOMINAL DESIGN CONDITIONS, 60 HZ) G-PWC-30 PERFORMANCE (NOMINAL DESIGN CONDITIONS) G-PWC-50 PERFORMANCE (NOMINAL DESIGN CONDITIONS) GP Series Portable Chillers Chapter 7: Appendix 46 of 64 7-4 Pump Curves, Flow, and Pressure Considerations 60 Hertz Pump Curves GP Series Portable Chillers Chapter 7: Appendix 47 of 64 50 Hertz Pump Curves Page Page 7-6 Typical Ductwork for Air-Cooled Chillers Page Page 7-8 Piping Diagrams