Sterling SDAA 25-100 specifications Operation, Start-up

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Chapter 4: Operation

4-1 Start-up

1.Turn on (energize) the disconnect switch in your power drop, then turn on the one on the dryer.

2.Turn the system ON/OFF switch to ON to energize the display panel.

3.Close the slidegate at the bottom of the drying hopper. Make sure that the blowers turn in the right direction.

4.Fill the drying hopper with material.

5.Turn the dryer ON switch to START to start the dryer.

The process blower starts.

6.If your dryer has a water-cooled aftercooler, make sure that sufficient cooling water (3gpm at 85°F or lower) flows properly through the coil and that you have bled any trapped air from the system. Make sure the aftercooler has the proper supply water temperature.

7.Set the process set point on the temperature controller.

8.After the proper pre-drying time for the initial hopper fill has elapsed, fully open the drying hopper slide gate.

9.Turn on the machine convey ON/OFF switch to ON, and set the convey timer for the proper conveying time.

Note: To allow proper residence time during continuous processing, maintain the material level in the hopper at the midpoint of the air trap assembly.

Dehumidifying Dryers

Chapter 4: Operation

24 of 59

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Contents Sdaa 25-100 15-60 cfm Dehumidifying Dryers Shipping Information Table of Contents Maintenance Service Department Sales Department Contract Department How to Use This Manual SafetySafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves General Responsibility ResponsibilityRemember Operator ResponsibilityReporting a Safety Defect Maintenance ResponsibilityDehumidifying Dryers Safety Models Covered in This Manual Functional DescriptionGeneral Description What is desiccant? Standard FeaturesMechanical Features Electrical FeaturesController Features Safety Devices and InterlocksOptions Safety Device Lock-Outs Safety Circuit StandardsFail Safe Operation Uncrating the Equipment InstallationRigging and Placing the Dryer Machine-Mount Dryer Dimensions Floor-Mount Dryer Dimensions Recommended Dryer Lifting Hardware Suggested Lift Rigging for Cart Mounted DryersSuggested Lift Rigging for Machine Mounted Dryers Electrical ConnectionsThree-Phase Models Setup ProceduresChecking for Proper Blower Rotation Making Dryer/Drying Hopper Process Air ConnectionsDrying Hopper Air Trap Considerations Installing Water Lines Hose and Hose ClampOptional Aftercooler Initial Start-up Auto-Tuning the DryerPre-Startup Checks Starting Up the DryerShutting Down the Dryer Start-up OperationIndicator Lights SwitchesController Description and Operation Lit when Control Output 1 is on. The Out1 Process Air Temperature ControllerLit when Control Output 2 is on. Not used Lights in the Operation Indicator Section when Indicator Name DescriptionIdentifying Temperature Controller Keys Setting the Process Air TemperatureE5CN Operating Parameters Tuned prior to dryer startup Adjustment Level Indicator Name DescriptionON, OFF Entering Operating Parameters to Select ModesProcess Air Dew Point Display Setting the High Dew Point AlarmOptional Setting the Redundant Safety Controller Redundant Safety Controller DisplayWatlow Operating Parameters Mode Parameter Setting range Default Manf. setting Dryer Operation Procedures Model Heating Cooling 15 cfm 30 cfm 60 cfm Page Controller Operation With Optional Alarm Horn & Reset Button Page Alarm Display Messages Shutting Down the Dryer Auto-Tuning the DryerPreventative Maintenance Schedule MaintenancePhotocopy this page for your maintenance records Recommendations for Cleaning and Replacing Filters Preventative MaintenanceServicing Process Air Filters VacuumingServicing the Dew Point Monitor Cleaning with Compressed AirSymptoms of Worn Desiccant Corrective MaintenanceReplacing Worn Desiccant First AIDConsult local disposal regulations for more information Replacing the Process Heater ProceduresProblem Possible cause Corrective action TroubleshootingIntroduction Problem Possible cause Corrective action Check resin manufacturer’s data Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsUsing a Platinum Resistance Thermometer Warranty Specifications WarrantyWarranty Restrictions AppendixOptional Components Warranty LiabilitiesCustomer Responsibilities Annex B Information Technical SpecificationsAftercooler Design Specifications Drawings and Diagrams Spare Parts ListLevel 2 & 3 Spare Parts List Electrical & Mechanical Warranty Returns Safety Tag InformationDryer Safety Tags Returned Material PolicyLocated on back of Dryer Dryer Identification Serial Number TagTechnical Assistance Service DepartmentParts Department Sales Department