Sterling 882.93092.00 specifications Pump

Page 22

Figure 6: Ethylene Glycol and Propylene Glycol Curves

Pe rce nt Glyc ol Cu rves for Free ze P rotec tion

40.0

 

 

 

 

 

 

30.0

 

 

 

 

 

 

20.0

 

 

 

Eth ylene G lycol

 

 

 

 

Prop ylene

Glycol

 

 

 

 

 

 

10.0

 

 

 

 

 

 

0.0

 

 

 

 

 

 

-10.0

 

 

 

 

 

 

-20.0

 

 

 

 

 

 

-30.0

 

 

 

 

 

 

-40.0

 

 

 

 

 

 

-50.0

 

 

 

 

 

 

-60.0

 

 

 

 

 

 

0.0

10.0

20.0

30.0

40.0

50.0

60.0

% Gl ycol by Vol um e

Example: 45°F set point minus 20°F = 25°F.

From Figure 28, 25°F equates to 10% by volume of glycol required.

Note:

The standard pumps used in the GPAC Serice chillers are not recommended to

 

be used with fluid below 0°F (-18°C). Please consult factory for the proper

 

pump.

GP Series Portable Chillers

Chapter 3: Installation

22 of 64

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Contents GP Series Portable Chillers Shipping Information Table of Contents Operation How to Use This Manual SafetySafety Symbols Used in this Manual Responsibility General Description Functional DescriptionModels Covered in This Manual Chilled Water CircuitMechanical Features Standard FeaturesElectrical Features Controller Features Safety Devices and InterlocksRefrigeration Features Other FeaturesHigh Pressure Cutout Optional FeaturesFlow Switch Remote Start/Stop InterlockMounting Features Optional Pump Amperages Voltage Construction Full Load Amps Uncrating InstallationElectrical Connections Galvanic Corrosion Considerations Process Water ConnectionsBypass Valve Considerations Water Treatment ConsiderationsWater-Cooled Chiller Condensers Condenser ConsiderationsAir-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Equivalent Length in Feet for Valves and Fittings Discharge Line Sizing Refrigerant Charge Determination Water Pumps Three-Phase CompressorsChecking Motor Direction Condenser FanWater Reservoir Part Number DescriptionPump Automatic Water Make-Up Option Finishing Setup Setting Up PasswordsInitial Start-Up Page Page Operation Panel Buttons, Indicator Lights, and SwitchesMicroprocessor Controller Main Status Screen Operator Setpoints Screen Status Screens GP Series Portable Chillers Operation Access Levels Controller Setpoints Menu Screen Alarms Optional CommunicationsGP Series Portable Chillers Operation Lubrication MaintenanceFilter Cleaning Maintaining the CondenserMaintaining the Evaporator Preventative Maintenance ServiceEvaporator Process Piping Y-Strainer Troubleshooting GP Series Portable Chillers TroubleshootingGP Series Portable Chillers Troubleshooting Returned Material Policy Warranty ReturnsAppendix Credit ReturnsParts Department Service DepartmentTechnical Assistance Sales DepartmentSpecifications Air-Cooled Portable ChillersPAC-40 Water-Cooled Portable Chillers PWC-20PWC-40 Pump Curves, Flow, and Pressure Considerations Hertz Pump CurvesALL 50 Hz Capacity liter/minCalculating Chiller Nominal Flow and Pressure to Process Remote Air-Cooled Chiller Configurations Typical Ductwork for Air-Cooled Chillers Page GP Series Portable Chillers Appendix 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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