Sterling 882.00295.00 Functional Description, Models Covered in This Manual, General Description

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Chapter 2: Functional Description

2-1 Models Covered in This Manual

This manual provides operation, installation, and maintenance instructions for 600-3000 cfm Large Dehumidifying Dryers with AP1 control. These dryers are available with electric heaters or gas burners. Gas dryers are indicated with a “G” in the model number. Model numbers are listed on the serial tag. Make sure you know the model and serial number of your equipment before contacting the manufacturer for parts or service.

Our dehumidifying dryers are designed to generate heated, dehumidified air at carefully controlled temperatures for use in closed-loop plastic drying systems. Dehumidifying dryers are sized to meet the specific requirements stated by the Customer at the time of purchase.

2-2 General Description

Moisture removal from hygroscopic (moisture attracting) plastic pellets is an essential step in the manufacture of high-quality plastic products.

Our Dehumidifying Dryers are used by the plastics industry to generate very low dewpoint air that is heated to a controlled temperature for drying plastic pellets and regrind.

The drying system consists of a dry air source and drying hoppers with process heating controls. The dry air source controls two primary sub-systems, the process air and the regeneration circuit. Each dryer has a left and a right desiccant bed so that one bed can regenerate while the other is in use. 2000-3000 cfm dryers feature two sets of desiccant beds, for a total of four desiccant beds.

The drying system can be configured for one drying hopper or for as many as 20 hoppers. The process air heater can be located on the dryer or on each individual drying hopper. Heaters that are located on the drying hoppers can be set up with their own independent controls or can be controlled centrally using the main dryer controller.

Specifying a Drying System

There were many variables considered in the selection of your drying system, including: type of materials, residence time, throughput of the extruder or injection molding machine, ambient air moisture and temperature, and the altitude at the processing site. Should your operating environment change, we can advise you on necessary equipment, process time and temperature modifications.

What is Desiccant?

Desiccant is a material that attracts and holds (absorbs) water from the air. The desiccant our dryers use is a synthetic crystalline metal aluminosilicate that is blended with a clay binder and formed into beads.

Absorbed water is driven from saturated desiccant by heating it to a high temperature (reducing the desiccant's capacity to hold water) and forcing air through it. This moisture removal process is called "regeneration".

The Closed Loop Drying System

These dehumidifying dryers force hot, dry air through the resin in the drying hopper, where the air picks up moisture from the material and is drawn back to the dryer. In the dryer,

Large Dehumidifying Dryers

Functional Description

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Contents SDA 1000-5100 Series Large Dehumidifying Dryer AP-1 Control Shipping Info Unpacking and InspectionEvent of Shipping Damage If the Shipment is Not CompleteReturns Credit ReturnsTable of Contents Operation Large Dehumidifying Dryers Safety How to Use This ManualSafety Symbols Used in this Manual Dryer Safety Tags Description Responsibility General ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect Functional Description Models Covered in This ManualGeneral Description Process/Regeneration Cycle Sequence of OperationStandard Features Auto Start TimerMechanical Features Electrical FeaturesOptions Dewpoint ExtendClosed-Loop Regeneration Drawings and Diagrams Optional dryer dust collector Aftercooler Design Specifications Process AftercoolerProcess Air Dust Collector Process Air Dust Collector Recommended Temperature Settings Material Overdrying ProtectionMechanical Options Electrical OptionsController Options Safety Devices and Interlocks Safety Circuit StandardsSafety Device Lock-Outs Fail Safe OperationPage Dimensions and Specifications Denotes availability Mechanical Options Denotes availabilityDenotes availability Mechanical Installation Uncrating the EquipmentRigging and Placing Unit Making Electrical ConnectionsMaking Gas Line Connections Gas-Fired Models Only DescriptionChecking for Proper Blower Rotation Checking Blower RotationMaking Dryer/Drying Hopper Process Air Connections Dryer/Drying Hopper Process Air ConnectionsProcess Air Heater on Drying Hopper Large Dehumidifying Dryers Mechanical Installation Connecting Aftercooler/Precooler Cooling Water Optional Aftercooler Components & Flow RatesUsing the Drying Hopper Air Trap Drying Hopper Air TrapControls Controller DescriptionProcess Air Temperature and Conveying Process Controller Dryer Status Screen Startup ScreenDryer Alarms Help System LOG OFF Identifying Controller ScreensMain Menu Screen Setting Values Dryer Status Dryer Setup Over DRY Protect Alarms Auto Tune Dryer MenuAuto Start Main Menu Dryer Setup Screen 2 Dryer Setup Screen 3Dryer Setup Screen 4 Overdry Protection Overdry Protection Screen 1Overdry Protection Screen 2 Alarm History Screen AutotuneProcess AutoTune Screen DEW Point Setup Dew Point Setup ScreenAutostart Timer Screen Auto StartSystem Setup SET Clock Hour Meters Alarm History Status Help MenuHelp Menu Screen System MenuSystem Backup Service Menu Main Menu System Setup System Setup ScreenLOW Level Detection Setup Clock Menu Screen Autostart Clock ScreenHour Meter Screen Input StatusInput Status Screen Output StatusSystem Backup Screen ServiceService Menu Screen Alarm Screens Redundant Safety Controller Display Alarm Screen ExampleSetting the Redundant Safety Controller Always put your set point to 30F above set pointLarge Dehumidifying Dryers Controls Operation Start-upUsing the Dryer Status Screen Alarms Alarm DescriptionsShutdown Maintenance Maintenance SchedulePhotocopy this page for your maintenance records Preventative Maintenance Cleaning or Replacing the Process Air FiltersCleaning or Replacing the Regeneration Filter Calibrating the Dirty Filter AlarmChecking the Dewpoint Control System Corrective Maintenance Symptoms of Worn Out DesiccantReplacing the Desiccant Desiccant Tower Assembly Replacing the Process Heater Electric DryersProcess Heater Box Assembly Replacing the Regeneration Heater Electric DryersRegeneration Heater Box Assembly Troubleshooting Basic TroubleshootingIntroduction Large Dehumidifying Dryers Troubleshooting Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer Warranty AppendixTechnical Specifications Annex B InformationSpare Parts List Level 3 Mechanical Components Dryer Identification Serial Number Tag Located on back of DryerService Department Technical AssistanceParts Department Sales Department

882.00295.00 specifications

The Sterling 882.00295.00 is a remarkable piece of engineering that seamlessly combines functionality, durability, and aesthetic appeal in a compact form. Designed for those who require reliability and performance, this model stands out in its category, incorporating advanced technologies and user-friendly features.

One of the primary characteristics of the Sterling 882.00295.00 is its robust construction. The casing is made from high-quality materials that ensure resistance to wear and tear, making it suitable for various environments, whether industrial, commercial, or residential. Its sleek design not only provides visual appeal but also enhances its usability, allowing for easy integration into any workspace or setting.

The Sterling 882.00295.00 is equipped with state-of-the-art technology that enhances its performance. It features a precision-engineered mechanism that guarantees accurate readings and efficient operation. Users can rely on its consistent performance, whether for daily tasks or specialized applications. With enhanced data processing capabilities, this device can quickly analyze and display information, making it a valuable tool for professionals.

Another significant aspect of the Sterling 882.00295.00 is its user-centric design. The interface is intuitively organized, providing a seamless experience when navigating its features. This focus on usability ensures that operators of all skill levels can easily understand and utilize the device effectively. Additionally, the model often includes customizable settings, allowing users to tailor its functionality to meet specific needs.

In terms of connectivity, the Sterling 882.00295.00 supports modern protocols, enabling easy integration with other devices and systems. This feature is vital in today's interconnected world, where data sharing and collaboration are essential. Furthermore, it typically incorporates energy-efficient technologies, aligning with sustainable practices and reducing the overall carbon footprint.

Overall, the Sterling 882.00295.00 stands out for its blend of durability, advanced technology, and user-friendly features. It is a versatile solution that meets the demands of various users, from industrial professionals to everyday operators. With its focus on precision and efficiency, the Sterling 882.00295.00 is a valuable addition to any toolkit, ensuring that tasks are completed with the highest level of accuracy and reliability. Whether used in a high-stakes environment or for everyday applications, this model exemplifies the right combination of innovation and practicality.
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