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Sterling GP Series specifications Calculating Chiller Nominal Flow and Pressure to Process

Models: GP Series

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Calculating Chiller Nominal Flow and Pressure to Process

•Flow rate: Obtain the flow reading from the appropriate pump curve.

•Pressure: Obtain a corresponding pressure reading from the pump curve you selected, then subtract the one-pump pressure drop listed in the above table using the appropriate chiller hp and flow rate.

•For two-pump (Process/Recirc) chillers, do not subtract pressure drop from table above for process pump.

GP Series Portable Chillers

Chapter 7: Appendix

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Sterling GP Series specifications Calculating Chiller Nominal Flow and Pressure to Process

Contents

ECN No Copyright 2009 All rights reserved GP Series Portable ChillersPart Number Bulletin Number SC2-620 Effective 5/1/2009 We are committed to a continuing program of product improvementIf the Shipment is Not Complete Shipping InformationUnpacking and Inspection In the Event of Shipping DamageCHAPTER 2 FUNCTIONAL DESCRIPTION Table of ContentsCHAPTER 1 SAFETY CHAPTER 3 INSTALLATIONCHAPTER 6 TROUBLESHOOTING CHAPTER 5 MAINTENANCECHAPTER 7 APPENDIX 1-1 How to Use This Manual Chapter 1 SafetySafety Symbols Used in this Manual SYSTEM. This must be performed by a qualified service technician only 1-2 Warnings and Precautions9 Wear SAFETY GLASSES and WORK GLOVES 9 Use care when LOADING, UNLOADING, RIGGING, or MOVING this equipmentChilled Water Circuit Chapter 2 Functional Description2-1 Models Covered in This Manual 2-2 General DescriptionElectrical Features 2-3 Standard FeaturesMechanical Features Other Mechanical FeaturesOther Features 2-4 Safety Devices and InterlocksRefrigeration Features Controller FeaturesHigh Pressure Cutout 2-5 Optional FeaturesLow Pressure Cutout no switch but done through the transducer Flow SwitchMounting Features Full Load Amps Figure 1 Optional Pump AmperagesVoltage Construction3-1 Uncrating Chapter 3 Installation3-2 Electrical Connections 3-6 Water Treatment Considerations 3-3 Process Water Connections3-4 Bypass Valve Considerations 3-5 Galvanic Corrosion ConsiderationsWater-Cooled Chiller Condensers 3-7 Condenser ConsiderationsAir-Cooled Chiller Condensers Condenser Fan Three-Phase Compressors3-8 Checking Motor Direction Water PumpsPart Number 3-9 Water ReservoirDescription Pe rce nt Glyc ol Cu rves for Free ze P rotec tion Figure 2 Ethylene Glycol and Propylene Glycol CurvesFrom Figure 28, 25F equates to 10% by volume of glycol required Example 45F set point minus 20F = 25F3-10 Automatic Water Make-Up Option 3-12 Finishing Setup Setting Up Passwords3-11 Initial Start-Up Chapter 3 Installation To set password protections1. Press the button to access the menu screen or the following screen for the Supervisor Password21 of 6. Press to accept the Password and move to the next lineChapter 3 Installation GP Series Portable ChillersFigure 3 - Controller Display 4-1 Panel Buttons, Indicator Lights, and SwitchesChapter 4 Operation Microprocessor ControllerFigure 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 Screens26 of 4-4 Access LevelsGP Series Portable Chillers Chapter 4 OperationChapter 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 5-3 Maintaining the Condenser Chapter 5 Maintenance5-2 Filter Cleaning 5-1 Lubrication5-4 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 Credit Returns Warranty ReturnsChapter 7 Appendix 7-1 Returned Material PolicySales Department Service Department7-2 Technical Assistance Parts DepartmentG-PAC-30 7-3 SpecificationsAir-Cooled Portable Chillers G-PAC-20G-PAC-40 GP Series Portable ChillersChapter 7 Appendix 39 ofG-PWC-40 Water-Cooled Portable ChillersG-PWC-20 G-PWC-30G-PWC-50 GP Series Portable ChillersChapter 7 Appendix 41 ofCapacity Gal/min 7-4 Pump Curves, Flow, and Pressure Considerations60 Hertz Pump Curves Head ftCalculating Chiller Nominal Flow and Pressure to Process 7-5 Electrical Schematic