HP A0554832 manual HP Portable Chillers Troubleshooting

Page 42

Problem

Possible cause

Solution

 

Water/glycol mixture inadequate

Make sure that the water/glycol mixture

 

protection is right for the process.

 

for process.

 

 

 

Defective or improperly set

Adjust or replace.

Water temperature is too high.

High/Low thermostat.

 

 

Refrigerant low pressure switch is

Call service to adjust pressure control.

 

set too high.

 

 

 

Refrigerant charge is low.

Call service to find and repair the leak,

 

then have refrigerant added.

 

 

 

 

Verify rotation; if running in reverse

Pump pressure low (refer to curves

Pump running in reverse.

rotation, reverse any two main power

for normal pressure for various

leads. Re-verify for correct pump

 

pumps).

 

rotation.

 

Check for foreign matter.

Clean the system.

Pump pressure is too high.

Restricted water flow.

Check for partially closed valves etc.

Make sure that all lines are properly

 

 

sized.

 

Restricted condenser air.

Clean filters.

Unit runs continuously, but not

 

Clean condenser.

Unit low on refrigerant.

Check the refrigerant charge.

enough cooling power.

Compressor not operating

Call service.

 

efficiently.

 

 

 

Unit under-sized for application.

Call sales rep.

2-40 HP Portable Chillers

Chapter 6: Troubleshooting

42 of 78

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Contents Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers Safety How to Use This ManualSafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves ResponsibilityFunctional Description Models Covered in This ManualGeneral Description Chilled Water CircuitRefrigeration Circuit Standard Features Mechanical FeaturesOther Mechanical Features Controller Features Electrical FeaturesRefrigeration Features Other FeaturesCrankcase Heater Safety Devices and InterlocksHigh/Low Thermostat Control High Pressure CutoutPressure Switch Oil Pressure Safety SwitchFan Cycling Switch Flow SwitchOptional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Installation UncratingElectrical Connections Galvanic Corrosion Considerations Process Water ConnectionsBypass Valve Considerations Water Treatment ConsiderationsCondenser Considerations Water-Cooled Chiller CondensersAir-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 DeterminationWater Pumps Three-Phase CompressorsChecking Motor Direction Condenser FanWater Reservoir Part Number DescriptionEthylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up Operation Panel Buttons, Indicator Lights, and SwitchesE5CK Controller Indicator Name Description Microprocessor ControllersIndicator Name Description Sterlco 2000 Controller Indicator Name Description2000 See on Indicator Name Description Graphic PanelIndicator Name Description Typical Graphic Panels With E5CK Controller With Sterlco 2000 ControllerStart-up Setting the Process Water TemperaturesAuto-Tuning Optional CommunicationsThermostat Buttons Indicator Name Description Programming the Electronic High/Low ThermostatStage 2 High Temperature Protection Select Fahrenheit or CelsiusStage 1 Freeze Protection Maintenance Filter CleaningLubrication Evaporator Process Piping Y-Strainer Maintaining the CondenserMaintaining the Evaporator Air- and Remote Air-Cooled ChillersPreventative Maintenance Service Troubleshooting HP Portable Chillers TroubleshootingHP Portable Chillers Troubleshooting Warranty AppendixParts Department Service DepartmentTechnical Assistance Sales DepartmentDrawings and Specifications Hp and 3 1/2 hp Air-Cooled Portable ChillersHp 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 Hp and 3.5 hp Water-Cooled Portable Chillers Nominal Condenser water Nominal cooling Water ComIn. NPT Height Width Depth Lbs 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 12.8 17.3 Nominal cooling Com Refrigeration Power in amps eHp and 7.5 hp Remote Air-Cooled Portable Chillers 748Pres Nom Connections Hp and 15 hp Remote Air-Cooled Portable ChillersNominal cooling Com Refrigeration 15.0 40.9 34.0 74.7Hp through 40 hp Remote Air-Cooled Portable Chillers To/from No tank Tank, to/from Height Width Depth LbsRemote Condenser Assembly Models ‘A’in ‘B’in ‘C’in ‘D’in ODSinPump Curves, Flow, and Pressure Considerations Hertz Pump CurvesDWG. No. S0554823 Water Pressure Drop Tables Calculating Chiller Nominal Flow and Pressure to ProcessRecirculation Pump Specifications Recirc. power Flow Rate ∆ pressure Gpm Lpm Psi KPaFlow and Pressure Considerations Remote Air-Cooled Chiller Configurations Configuration aConfiguration B Configuration C Typical Ductwork for Air-Cooled Chillers Piping Diagrams Central and Gravity Return Piping with Standpipe DiagramTypical 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 Typical Electrical Subpanel Electrical SchematicsTime-delay Relays Disconnect Switch Optional Speed FusesTypical Electrical Schematic, 2 hp and 3 1/2 hp Models Typical Power Wiring Schematic, 5 hp through 40 hp Models A0554815HP 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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