Graphic Panel, See on Indicator Name Description | HP A0554832

Graphic Panel

(See Figure 8 on Page 32.)

Indicator	Name	Description

	Compressor On	The Compressor On light turns on whenever the
	Light	compressor is operating.

	Low Temperature	The Low Temperature light comes on if the process
	Light	water/glycol temperature drops below the High/Low
		thermostat set point. The High/Low thermostat stage
		one switch opens the control circuit shutting down
		the compressor, but the process water/glycol
		pump(s) continue to operate. This action prevents
		possible chiller evaporator freeze-up.

	Hot Gas Bypass	The Hot Gas By-Pass light turns on when the hot
	Light	gas bypass valve is in operation. The OUT1 LED on
		the controller also lights when the hot gas bypass
		valve is in operation.

	High Temperature	The High Temperature light comes on if the process
	Light	water/glycol temperature rises above the High/Low
		thermostat stage two set point. The High/Low
		thermostat stage two switch opens the control circuit
		shutting down the process water/glycol pump(s),
		and the chiller shuts off. This action prevents
		possible system failure from overheating of the
		process water/glycol.

	Pump On Light	The Pump On light, installed on chillers with a
		pump, lights whenever the pump(s) operates.

	High Discharge	The High Discharge Temperature light comes on if
	Temperature Light	the compressor discharge line temperature switch
		opens. This switch prevents possible compressor
		failure due to over loading, the compressor stops,
		but the pump(s) continue to run. This occurs when
		the discharge line temperature rises above 260ºF
		(127ºC). Call a qualified refrigeration service
		technician or contact the Service Department.

	Pump Overload	The Pump Overload light, installed on chillers with
	Light	a pump(s), lights whenever a pump motor(s) has
		shut down from a motor overload condition.

	High Refrigerant	The High Refrigerant Pressure light comes on if the
	Pressure Light	compressor discharge pressure exceeds the limit of
		the high pressure cutout switch. The compressor
		stops but the pump(s) continue to run until you
		manually reset the high-pressure cutout switch. Call
		a qualified refrigeration service technician or
		contact the Service Department.

2-40 HP Portable Chillers

Chapter 4: Operation

32 of 78

Image 32

HP A0554832 manual Graphic Panel, See on Indicator Name Description

Contents

Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Responsibility Functional Description Models Covered in This Manual Refrigeration Circuit General DescriptionChilled Water Circuit Other Mechanical Features Standard FeaturesMechanical Features Electrical Features Refrigeration FeaturesController Features Other Features Safety Devices and Interlocks High/Low Thermostat ControlCrankcase Heater High Pressure Cutout Oil Pressure Safety Switch Fan Cycling SwitchPressure Switch Flow Switch Optional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Electrical Connections InstallationUncrating Process Water Connections Bypass Valve ConsiderationsGalvanic Corrosion Considerations Water Treatment Considerations Air-Cooled Chiller Condensers Condenser ConsiderationsWater-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Page Equivalent Length in Feet for Valves and Fittings Chiller Condenser Charge Field Installed Piping Charge Refrigerant Charge Determination Three-Phase Compressors Checking Motor DirectionWater Pumps Condenser Fan Water Reservoir Part Number Description Ethylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up Panel Buttons, Indicator Lights, and Switches E5CK Controller Indicator Name DescriptionOperation Microprocessor Controllers Indicator Name Description Sterlco 2000 Controller Indicator Name Description 2000 See on Indicator Name Description Graphic Panel Indicator Name Description Typical Graphic Panels With E5CK Controller With Sterlco 2000 Controller Setting the Process Water Temperatures Auto-TuningStart-up Optional Communications Thermostat Buttons Indicator Name Description Programming the Electronic High/Low Thermostat Stage 1 Freeze Protection Stage 2 High Temperature ProtectionSelect Fahrenheit or Celsius Lubrication MaintenanceFilter Cleaning Maintaining the Condenser Maintaining the EvaporatorEvaporator Process Piping Y-Strainer Air- and Remote Air-Cooled Chillers Preventative Maintenance Service Troubleshooting HP Portable Chillers Troubleshooting HP Portable Chillers Troubleshooting Warranty Appendix Service Department Technical AssistanceParts Department Sales Department Drawings and Specifications Hp and 3 1/2 hp Air-Cooled Portable Chillers Hp and 7.5 hp Air-Cooled Portable Chillers Hp and 15 hp Air-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Air-Cooled Portable Chillers In. NPT Height Width Depth Lbs Hp and 3.5 hp Water-Cooled Portable ChillersNominal Condenser water Nominal cooling Water Com Hp and 7.5 hp Water-Cooled Portable Chillers Hp and 15 hp Water-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Water-Cooled Portable Chillers Hp and 40 hp Water-Cooled Portable Chillers Nominal cooling Com Refrigeration Power in amps e Hp and 7.5 hp Remote Air-Cooled Portable Chillers12.8 17.3 748 Hp and 15 hp Remote Air-Cooled Portable Chillers Nominal cooling Com RefrigerationPres Nom Connections 15.0 40.9 34.0 74.7 Hp through 40 hp Remote Air-Cooled Portable Chillers To/from No tank Tank, to/from Height Width Depth Lbs Remote Condenser Assembly Models ‘A’in ‘B’in ‘C’in ‘D’in ODSin Pump Curves, Flow, and Pressure Considerations Hertz Pump Curves DWG. No. S0554823 Water Pressure Drop Tables Calculating Chiller Nominal Flow and Pressure to Process Flow and Pressure Considerations Recirculation Pump SpecificationsRecirc. power Flow Rate ∆ pressure Gpm Lpm Psi KPa Configuration B Configuration C Remote Air-Cooled Chiller ConfigurationsConfiguration a Typical Ductwork for Air-Cooled Chillers Piping Diagrams Central and Gravity Return Piping with Standpipe Diagram Typical Piping Schematic, 2 and 3 1/2 hp Models HP Portable Chillers Appendix HP Portable Chillers Appendix Typical Piping Schematic, 5 hp through 40 hp, No-Pump Models HP Portable Chillers Appendix Electrical Schematics Time-delay Relays Disconnect Switch OptionalTypical Electrical Subpanel Speed Fuses Typical Electrical Schematic, 2 hp and 3 1/2 hp Models Typical Power Wiring Schematic, 5 hp through 40 hp Models A0554815 HP Portable Chillers Appendix DWG A0554931 DWG A0562343 DWG A0562435 Typical Wiring Schematic, 35 hp and 40 hp Models with Pump DWG A0562434