Sterling A0554831 manual HP Portable Chillers Troubleshooting

Page 42

Problem

Possible cause

 

Plugged Y-Strainer

Pump runs, compressor cycles at

 

Hot gas not coming on

short intervals.

 

 

 

Low water flow

 

 

 

Water/glycol mixture inadequate

 

for process.

 

Defective or improperly set

Water temperature is too high.

High/Low thermostat.

 

Refrigerant low pressure switch is

 

set too high.

 

Refrigerant charge is low.

 

 

Pump pressure low (refer to curves

Pump running in reverse.

for normal pressure for various

 

pumps).

 

 

Check for foreign matter.

Pump pressure is too high.

Restricted water flow.

 

 

 

Restricted condenser air.

 

 

Unit runs continuously, but not

Unit low on refrigerant.

 

 

enough cooling power.

Compressor not operating

 

 

efficiently.

 

 

 

Unit under-sized for application.

Solution

Clean

Replace relay board on control bed hot gas coil

Install bypass between to-and-from process line

Make sure that the water/glycol mixture protection is right for the process.

Adjust or replace.

Call service to adjust pressure control.

Call service to find and repair the leak, then have refrigerant added.

Verify rotation; if running in reverse rotation, reverse any two main power leads. Re-verify for correct pump rotation.

Clean the system.

Check for partially closed valves etc. Make sure that all lines are properly sized.

Clean filters. Clean condenser.

Check the refrigerant charge.

Call service.

Call sales rep.

2-40 HP Portable Chillers

Chapter 6: Troubleshooting

42 of 70

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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 CutoutFlow Switch Fan Cycling SwitchPressure Switch Low Pressure CutoutOptional 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 DescriptionE5CK See Figure Indicator Name Description Graphic PanelIndicator Name Description Typical Graphic Panels With E5CK Controller Eurotherm 3216 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 Returned Material Policy Warranty ReturnsAppendix Credit ReturnsParts 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 In. NPT Height Width Depth Lbs 28.3 22.0 41.7 Hp and 3.5 hp Water-Cooled Portable ChillersNominal Condenser water Nominal cooling Water Com 28.3 22.0 41.7Hp 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 Water-Cooled Portable Chillers 39.5 39.1 98.481.9 63.1 85.0 66.2 Hp and 7.5 hp Remote Air-Cooled Portable Chillers In. dia. ODS Pump Pumps Discharge Liquid Rated Running Hp and 15 hp Remote Air-Cooled Portable ChillersNominal cooling Com 15.0 40.9 34.0 74.7Pres Nom Connections Hp through 40 hp Remote Air-Cooled Portable ChillersNominal cooling Com Refrigeration 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 Evaporator Water Pressure Drop Tables Calculating Chiller Nominal Flow and Pressure to ProcessRecirculation Pump Specifications Recirc. power Flow Rate Pressure Gpm Lpm Psi KPaEvaporator Flow and Pressure Considerations Remote Air-Cooled Chiller Configurations 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 Electrical Schematics Typical Electrical Subpanel

A0554831 specifications

The Sterling A0554831 is a versatile and powerful tool designed for a range of applications, particularly in the industrial and construction sectors. Known for its robust construction and reliability, it has gained popularity among professionals and DIY enthusiasts alike.

One of the main features of the Sterling A0554831 is its durable build quality, which is designed to withstand harsh working conditions. The device typically features a high-strength casing that protects it from dust, moisture, and impact, ensuring longevity even in the most demanding environments. Its ergonomic design allows for comfortable handling, minimizing user fatigue during extended use.

In terms of performance, the Sterling A0554831 is equipped with advanced technologies that enhance its efficiency and functionality. The device is powered by a high-torque motor, delivering impressive power that enables it to tackle heavy-duty tasks with ease. The precision-engineered components ensure consistent performance, making it ideal for tasks that require accuracy and reliability.

Another significant characteristic of the Sterling A0554831 is its versatility. It typically comes with multiple settings and modes, allowing users to adjust the tool according to the specific requirements of their project. Whether drilling, cutting, or fastening, the tool can accommodate various tasks, making it a valuable addition to any toolkit.

Safety features are also a priority with the Sterling A0554831. Many models are equipped with overload protection and safety switches that prevent accidental activation, safeguarding the user during operation. Additionally, some variants may include LED indicators that provide real-time information about battery life or operational status, enhancing overall user experience.

In conclusion, the Sterling A0554831 stands out in the market for its combination of durability, performance, and versatility. With advanced technologies that cater to a wide range of applications and a design focused on user comfort and safety, this tool is an excellent choice for professionals looking for dependable and effective solutions in their work. Whether you are a seasoned professional or a casual DIYer, the Sterling A0554831 is well-equipped to handle your needs with ease and efficiency.
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