Sterling 882.93092.00 specifications Operation, Panel Buttons, Indicator Lights, and Switches

Page 29

Chapter 4: Operation

4-1 Panel Buttons, Indicator Lights, and Switches

Microprocessor Controller

The standard chillers use a microprocessor-based PID controller. The Carel PCO controller along with the Carel PGD1 Interface is a modular, self-contained unit that can slide from its mounting housing. It is factory set and adjusted; no field adjustment to the internal controls is necessary. The standard operation range is 20ºF to 80ºF (-7ºC to 27ºC).

Figure 7 - Controller Display

Button

Button Description

 

Detailed description

 

Menu Button

 

Used to access the menus structure of the PGD interface

 

 

 

 

 

 

 

 

On/Off Button

 

Used to turn the entire chiller On or Off. The button is backlit and will

 

 

 

turn amber when the chiller is On.

 

 

 

 

 

Back Button

 

Used to back up from a menu and return to the main status screen

 

 

 

 

 

 

 

 

Up Arrow Button

 

Used to increment a data field or scroll up within a menu structure.

 

 

 

 

 

 

 

 

Enter Button

 

Used to accept a data field value or to select a menu item.

 

 

 

 

 

 

 

 

Down Arrow Button

 

Used to decrement a data field or scroll down within a menu structure.

 

 

 

 

 

 

 

GP Series Portable Chillers

Chapter 4: Operation

29 of 73

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Contents GP Series Portable Chillers Shipping Information Table of Contents Appendix Safety Symbols Used in this Manual SafetyHow to Use This Manual Responsibility Models Covered in This Manual Functional DescriptionGeneral Description Chilled Water CircuitElectrical Features Standard FeaturesMechanical Features Refrigeration Features Safety Devices and InterlocksController Features Other FeaturesFlow Switch Optional FeaturesHigh Pressure Cutout Remote Start/Stop InterlockMounting Features Optional Pump Amperages Voltage Construction Full Load Amps Electrical Connections InstallationUncrating Bypass Valve Considerations Process Water ConnectionsGalvanic Corrosion Considerations Water Treatment ConsiderationsWater-Cooled Chiller Condensers Condenser ConsiderationsAir-Cooled Chiller Condensers Remote Air-Cooled Chiller CondensersPage Page Equivalent Length in Feet for Valves and Fittings Total Equiv GP Series Portable Chillers Installation Discharge Line Sizing Refrigerant Charge Determination Checking Motor Direction Three-Phase CompressorsWater Pumps Condenser FanPart Number Description Water ReservoirPump Initial Start-Up Finishing Setup Setting Up PasswordsAutomatic Water Make-Up Option Page Page Microprocessor Controller Panel Buttons, Indicator Lights, and SwitchesOperation Main Status Screen Operator Setpoints Screen Status ScreensPage Access Levels Controller Setpoints Optional Communications AlarmsPage GP Series Portable Chillers Operation Filter Cleaning MaintenanceLubrication Maintaining the CondenserEvaporator Process Piping Y-Strainer Preventative Maintenance ServiceMaintaining the Evaporator GP Series Portable Chillers Troubleshooting TroubleshootingGP Series Portable Chillers Troubleshooting Appendix Warranty ReturnsReturned Material Policy Credit ReturnsTechnical Assistance Service DepartmentParts Department Sales DepartmentAir-Cooled Portable Chillers SpecificationsPAC-20 PAC-30PAC-50 PAC-40GPAC-70 TON GPAC-140 GPAC-105GPAC-210 GPAC-175PWC-30 Water-Cooled Portable ChillersPWC-20 PWC-50 PWC-40GPWC-70 GPWC-140 GPWC-105GPWC-210 GPWC-175Hertz Pump Curves Pump Curves, Flow, and Pressure ConsiderationsModel GP70 GP90 Capacity liter/min ALL 50 HzACS Chiller Pumps GPM DP PSI Pure Water at 40FRemote Air-Cooled Chiller Configurations Typical Ductwork for Air-Cooled Chillers Page Piping Diagrams GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix GP Series Portable Chillers Appendix
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882.93092.00 specifications

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