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Sterling specifications GP Series Portable Chillers, ECN No Copyright 2009 All rights reserved

Models: GP Series

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GP Series

Portable Chillers

Part Number: 882.93092.00

Bulletin Number: SC2-620

Effective: 5/1/2009

Write Down Your Serial Numbers Here For Future Reference:

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We are committed to a continuing program of product improvement.

Specifications, appearance, and dimensions described in this manual are subject to change without notice.

ECN No. ____________

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Sterling specifications GP Series Portable Chillers, Part Number Bulletin Number SC2-620 Effective 5/1/2009

Contents

Part Number Bulletin Number SC2-620 Effective 5/1/2009 GP Series Portable ChillersWe are committed to a continuing program of product improvement ECN No Copyright 2009 All rights reservedUnpacking and Inspection Shipping InformationIn the Event of Shipping Damage If the Shipment is Not CompleteCHAPTER 1 SAFETY Table of ContentsCHAPTER 3 INSTALLATION CHAPTER 2 FUNCTIONAL DESCRIPTIONCHAPTER 6 TROUBLESHOOTING CHAPTER 5 MAINTENANCECHAPTER 7 APPENDIX 1-1 How to Use This Manual Chapter 1 SafetySafety Symbols Used in this Manual 9 Wear SAFETY GLASSES and WORK GLOVES 1-2 Warnings and Precautions9 Use care when LOADING, UNLOADING, RIGGING, or MOVING this equipment SYSTEM. This must be performed by a qualified service technician only2-1 Models Covered in This Manual Chapter 2 Functional Description2-2 General Description Chilled Water CircuitMechanical Features 2-3 Standard FeaturesOther Mechanical Features Electrical FeaturesRefrigeration Features 2-4 Safety Devices and InterlocksController Features Other FeaturesLow Pressure Cutout no switch but done through the transducer 2-5 Optional FeaturesFlow Switch High Pressure CutoutMounting Features Voltage Figure 1 Optional Pump AmperagesConstruction Full Load Amps3-1 Uncrating Chapter 3 Installation3-2 Electrical Connections 3-4 Bypass Valve Considerations 3-3 Process Water Connections3-5 Galvanic Corrosion Considerations 3-6 Water Treatment ConsiderationsWater-Cooled Chiller Condensers 3-7 Condenser ConsiderationsAir-Cooled Chiller Condensers 3-8 Checking Motor Direction Three-Phase CompressorsWater Pumps Condenser FanPart Number 3-9 Water ReservoirDescription From Figure 28, 25F equates to 10% by volume of glycol required Figure 2 Ethylene Glycol and Propylene Glycol CurvesExample 45F set point minus 20F = 25F Pe rce nt Glyc ol Cu rves for Free ze P rotec tion3-10 Automatic Water Make-Up Option 3-12 Finishing Setup Setting Up Passwords3-11 Initial Start-Up 1. Press the button to access the menu screen To set password protectionsor the following screen for the Supervisor Password Chapter 3 InstallationChapter 3 Installation 6. Press to accept the Password and move to the next lineGP Series Portable Chillers 21 ofChapter 4 Operation 4-1 Panel Buttons, Indicator Lights, and SwitchesMicroprocessor Controller Figure 3 - Controller DisplayFigure 4 - Main Status Screen 4-2 Initial Start-upFigure 5 - Menu Screen Figure 6 - Operator Setpoints Screen Figure 7 - Main Status Screen 4-3 Status ScreensGP Series Portable Chillers 4-4 Access LevelsChapter 4 Operation 26 ofChapter 4 Operation GP Series Portable Chillers27 of Operator Controller SetpointsFigure 8 - Menu Screen 4-7 Optional Communications 4-6 AlarmsFigure 9 - Operator Setpoints Screen Chapter 4 Operation GP Series Portable Chillers31 of 5-2 Filter Cleaning Chapter 5 Maintenance5-1 Lubrication 5-3 Maintaining the Condenser5-4 Maintaining the Evaporator 5-6 Preventative Maintenance Service5-5 Evaporator Process Piping Y-Strainer Chapter 6 Troubleshooting GP Series Portable Chillers Chapter 6 Troubleshooting35 of Chapter 7 Appendix Warranty Returns7-1 Returned Material Policy Credit Returns7-2 Technical Assistance Service DepartmentParts Department Sales DepartmentAir-Cooled Portable Chillers 7-3 SpecificationsG-PAC-20 G-PAC-30Chapter 7 Appendix GP Series Portable Chillers39 of G-PAC-40G-PWC-20 Water-Cooled Portable ChillersG-PWC-30 G-PWC-40Chapter 7 Appendix GP Series Portable Chillers41 of G-PWC-5060 Hertz Pump Curves 7-4 Pump Curves, Flow, and Pressure ConsiderationsHead ft Capacity Gal/minCalculating Chiller Nominal Flow and Pressure to Process 7-5 Electrical Schematic