Sterling 882.93092.01 GPWC-40 , GPWC-50

GP Series Portable Chillers Chapter 7: Appendix 66 of 90

GPWC-40

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY 10.94 TONS ALTITUDE SEA LEVEL

COOLANT SUPPLY TEMPERATURE 50 °F COMPRESSOR POWER 8450 WATTS

CONDENSER INLET WATER

TEMPERATURE

85 °F EER 15.53 BTU/WATT

COOLANT WATER CONDENSER WATER FLOW 33.93 GPM

COOLANT FLOW 27 GPM SOUND POWER LEVEL dBA

UNIT PRESSURE DROP 7 PSID

SOUND PRESSURE LEVEL @ 1

METER

dBA

OPERATING PARAMETERS

COOLANT SUPPLY TEMPERATURE 20-80 °F COOLANT FLOW 12-48 GPM

CONDENSER INLET WATER

TEMPERATURE

50-90 °F MINIMUM LOAD 2.262 TONS

SPECIFICATIONS

COMPRESSOR SCROLL EVAPORATOR FILTER 20 MESH

COOLANT PUMP STAINLESS STEEL CENTRIFUGAL COOLANT CIRCUIT NON-FERROUS

EVAPORATOR BRAZED PLATE CAPACITY CONTROL HOT GAS BYPASS

CONDENSER TUBE IN TUBE REFRIGERANT 6 LBS R-410A

FRAME GALVANIZED STEEL

PANELS POWDER COATED STEEL

RESERVOIR 40 GALLON POLYETHYLENE WEIGHT (OPERATING) 1090 LBS

POWER 460V/3PH/60HZ WEIGHT (SHIPPING) 760 LBS

CONTROL CIRCUIT 120 VDC ELECTRICAL ENCLOSURE NEMA 12

COMPRESSOR FULL LOAD AMPS 20 AMPS CONTROL MICROPROCESSOR

GPWC-50

PERFORMANCE (NOMINAL DESIGN CONDITIONS)

COOLING CAPACITY 16.66 TONS ALTITUDE SEA LEVEL

COOLANT SUPPLY TEMPERATURE 50 °F COMPRESSOR POWER 12778 WATTS

CONDENSER INLET WATER

TEMPERATURE

85 °F EER 15.65 BTU/WATT

COOLANT WATER CONDENSER WATER FLOW 50.28 GPM

COOLANT FLOW 40 GPM SOUND POWER LEVEL dBA

UNIT PRESSURE DROP 7 PSID

SOUND PRESSURE LEVEL @ 1

METER

dBA

OPERATING PARAMETERS

COOLANT SUPPLY TEMPERATURE 20-80 °F COOLANT FLOW 18-72 GPM

CONDENSER INLET WATER

TEMPERATURE

50-90 °F MINIMUM LOAD 3.352 TONS

SPECIFICATIONS

COMPRESSOR SCROLL EVAPORATOR FILTER 20 MESH

COOLANT PUMP STAINLESS STEEL CENTRIFUGAL COOLANT CIRCUIT NON-FERROUS

EVAPORATOR BRAZED PLATE CAPACITY CONTROL HOT GAS BYPASS

CONDENSER TUBE IN TUBE REFRIGERANT 8 LBS R-410A

FRAME GALVANIZED STEEL

PANELS POWDER COATED STEEL

RESERVOIR 40 GALLON POLYETHYLENE WEIGHT (OPERATING) 1290 LBS

POWER 460V/3PH/60HZ WEIGHT (SHIPPING) 950 LBS

CONTROL CIRCUIT 120 VDC ELECTRICAL ENCLOSURE NEMA 12

COMPRESSOR FULL LOAD AMPS 30 AMPS CONTROL MICROPROCESSOR

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