Sterling 882.93092.01

GP Series Portable Chillers Chapter 4: Operation 38 of 90

Figure 16: Main Chiller Status Screen

Depressing cycles through the following screens (shown below) – Analog I/O, Digital

I/O, and Test. The Analog and Digital I/O screens provide status of all of the inputs and

outputs for the controller. The Test aides in troubleshooting the chiller when it is not

functioning properly by displaying the basic information that a service person will need to

know to determine the problem.

Contents

Main GP Series Portable Chillers R Shipping Information Table of Contents CHAPTER 1:SAFETY ................................................................ 5 CHAPTER 2:FUNCTIONAL DESCRIPTION ............................. 7 CHAPTER 3:INSTALLATION .................................................. 16 CHAPTER 4:OPERATION ....................................................... 35 CHAPTER 5:MAINTENANCE ................................................. 48 CHAPTER 6:TROUBLESHOOTING ....................................... 50 CHAPTER 7:APPENDIX .......................................................... 58 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 Page 2-3 Standard Features Page 2-4 Safety Devices and Interlocks Page 2-5 Optional Features Page Chapter 3: Installation 3-1 Uncrating Important! 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 Page Page Page GP Series Portable Chillers Chapter 3: Installation 24 of 90 Figure 6: Discharge Line Sizing Page Page 3-8 Checking Motor Direction 3-9 Water Reservoir Page GP Series Portable Chillers Chapter 3: Installation 30 of 90 Figure 11: Ethylene Glycol and Propylene Glycol Curves Percent Glycol Curves for Freeze Protection 3-10 Automatic Water Make-Up Option 3-11 Initial Start-Up Page 3-12 Finishing Setup: Setting Up Passwords Page Chapter 4: Operation 4-1 Panel Buttons, Indicator Lights, and Switches 4-2 Initial Start-up 4-3 Status Screens Page Page Page GP Series Portable Chillers Chapter 4: Operation 41 of 90 4-4 Access Levels 4-5 Controller Setpoints Page Page Page GP Series Portable Chillers Chapter 4: Operation 45 of 90 4-6 Configuration Settings Page 4-7 Alarms 4-8 Optional Communications 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 Chapter 6: Troubleshooting 6-1 Identifying the Cause of a Problem Page Page Page Page GP Series Portable Chillers Chapter 6: Troubleshooting 55 of 90 Non-Controller Related Issues Page Page GP Series Portable Chillers Chapter 7: Appendix 58 of 90 Chapter 7: Appendix 7-1 Returned Material Policy Credit Returns 7-2 Technical Assistance Page GP Series Portable Chillers Chapter 7: Appendix 60 of 90 Specifications Air-Cooled Portable Chillers GPAC-40 GPAC-50 GPAC-70 GPAC-90 GPAC-105 GPAC-140 GPAC-175 GPAC-210 GP Series Portable Chillers Chapter 7: Appendix 65 of 90 Water-Cooled Portable Chillers GPWC-30 GPWC-20 GPWC-40 GPWC-50 GPWC-70 GPWC-90 GPWC-105 GPWC-140 GPWC-175 GPWC-210 GP Series Portable Chillers Chapter 7: Appendix 70 of 90 7-3 Pump Curves, Flow, and Pressure Considerations 60 Hertz Pump Curves Page GP Series Portable Chillers Chapter 7: Appendix 72 of 90 50 Hertz Pump Curves 20-50 ALL 50 Hz 70-210 ALL 50 Hz Page Page Page GP Series Portable Chillers Chapter 7: Appendix 77 of 90 7-5 Typical Ductwork for Air-Cooled Chillers