HP A0554832 manual Start-up, Setting the Process Water Temperatures, Auto-Tuning

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4-2 Start-up

1.Turn on the chiller and put it under a process load.

2.Set the controller for the To Process temperature you want, using the Up Arrow button or the Down Arrow button located on the face of the controller.

3.Adjust the High/Low thermostat, located in the electrical enclosure, to 8°F (4.4ºC) below the To Process temperature you want. The High/Low thermostat is factory-set at 42ºF (6ºC). See page 36 for information on resetting the High/Low thermostat.

4.Check the pump amp draw and pump pressure. Make sure that the amp draw reading is within the running load and service factor amps.

5.Operate the chiller, looking for any leaks and listening for unusual noises or vibrations that could indicate improper operation.

Note: Elevated sound level and substantially reduced current draw indicate reverse rotation. After several minutes of operation, the compressor internal protector trips.

4-3 Setting the Process Water Temperatures

E5CK Controller

To change the process water temperature set point, press the Up Arrow button to raise the set point, and press the Down Arrow button to lower the set point.

Sterlco 2000 Controller

To change the process water temperature set point, press the Index key, then press the Up Arrow button to raise the set point or the Down button to lower the set point. Press the Enter key for the controller to accept the new values. Press the Index key to return to the Home position.

4-4 Auto-Tuning

E5CK Controller Only

The Auto-Tune function lets you fine-tune the control PID to process requirements. Activate the Auto-Tune function whenever the process under control changes. Don’t be alarmed by control response. It may take the process temperature above and below the set points as many as three times before leveling off and controlling the process set point. Auto-Tuning can take up to 45 minutes and is best done before any product is being run.

1.Press and hold down the AT key for several seconds until the AT indicator flashes.

2.When the AT LED light stops flashing, the controller is tuned and ready for operation.

4-5 Optional Communications

The communications function allows you to monitor and set controller parameters by a program prepared and running on a host computer connected to the controller.

When using the communications function, you must add on the unit for RS-232C or RS-485 communications. The controller communications function allows you to read/write parameters, do operating instructions, and select the setting level.

2-40 HP Portable Chillers

Chapter 4: Operation

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Contents Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers Safety Symbols Used in this Manual SafetyHow to Use This Manual Responsibility Wear Safety Glasses and Work GlovesModels Covered in This Manual Functional DescriptionRefrigeration Circuit General DescriptionChilled Water Circuit Other Mechanical Features Standard FeaturesMechanical Features Other Features Electrical FeaturesRefrigeration Features Controller FeaturesHigh Pressure Cutout Safety Devices and InterlocksHigh/Low Thermostat Control Crankcase HeaterFlow Switch Oil Pressure Safety SwitchFan Cycling Switch Pressure SwitchOptional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Electrical Connections InstallationUncrating Water Treatment Considerations Process Water ConnectionsBypass Valve Considerations Galvanic Corrosion ConsiderationsAir-Cooled Chiller Condensers Condenser ConsiderationsWater-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Page Equivalent Length in Feet for Valves and Fittings Refrigerant Charge Determination Chiller Condenser Charge Field Installed Piping ChargeCondenser Fan Three-Phase CompressorsChecking Motor Direction Water PumpsPart Number Description Water ReservoirEthylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up Microprocessor Controllers Panel Buttons, Indicator Lights, and SwitchesE5CK Controller Indicator Name Description OperationSterlco 2000 Controller Indicator Name Description Indicator Name Description2000 Graphic Panel See on Indicator Name DescriptionIndicator Name Description With Sterlco 2000 Controller Typical Graphic Panels With E5CK ControllerOptional Communications Setting the Process Water TemperaturesAuto-Tuning Start-upProgramming the Electronic High/Low Thermostat Thermostat Buttons Indicator Name DescriptionStage 1 Freeze Protection Stage 2 High Temperature ProtectionSelect Fahrenheit or Celsius Lubrication MaintenanceFilter Cleaning Air- and Remote Air-Cooled Chillers Maintaining the CondenserMaintaining the Evaporator Evaporator Process Piping Y-StrainerPreventative Maintenance Service HP Portable Chillers Troubleshooting TroubleshootingHP Portable Chillers Troubleshooting Appendix WarrantySales Department Service DepartmentTechnical Assistance Parts DepartmentHp and 3 1/2 hp Air-Cooled Portable Chillers Drawings and SpecificationsHp 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 748 Nominal cooling Com Refrigeration Power in amps eHp and 7.5 hp Remote Air-Cooled Portable Chillers 12.8 17.315.0 40.9 34.0 74.7 Hp and 15 hp Remote Air-Cooled Portable ChillersNominal cooling Com Refrigeration Pres Nom ConnectionsTo/from No tank Tank, to/from Height Width Depth Lbs Hp through 40 hp Remote Air-Cooled Portable Chillers‘A’in ‘B’in ‘C’in ‘D’in ODSin Remote Condenser Assembly ModelsHertz Pump Curves Pump Curves, Flow, and Pressure ConsiderationsDWG. No. S0554823 Calculating Chiller Nominal Flow and Pressure to Process Water Pressure Drop TablesFlow 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 Central and Gravity Return Piping with Standpipe Diagram Piping DiagramsTypical 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 Speed Fuses Electrical SchematicsTime-delay Relays Disconnect Switch Optional Typical Electrical SubpanelTypical Electrical Schematic, 2 hp and 3 1/2 hp Models A0554815 Typical Power Wiring Schematic, 5 hp through 40 hp ModelsHP Portable Chillers Appendix DWG A0554931 DWG A0562343 DWG A0562435 Typical Wiring Schematic, 35 hp and 40 hp Models with Pump DWG A0562434
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