Sterling 60 cfm Corrective Maintenance, Cleaning with Compressed Air, Symptoms of Worn Desiccant

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Cleaning with Compressed Air

Blow clean, dry compressed air up and down the pleats, blowing out the filter from the inside out. Remove loose dirt from the filter with compressed air or vacuum from the outside.

Caution! DO NOT clean/wash filter with water!

After each cleaning:

•Inspect the filter element. Briefly hold a light bulb behind the element and look for any fatigued paper or residual dirt. Inspect for holes and tears by looking though the filter toward a bright light. Check for damaged gaskets or dented metal parts. Do not re-use a damaged filter!

•Check the gasket for damage. A damaged gasket allows contaminants into the process. Replace as needed.

Servicing the Dew Point Monitor

The accuracy of the dew point monitor on mini dryer systems depends on proper operation of the dew point sensor and the control board. The dew point sensor is in the process air stream and is therefore susceptible to contamination.

Dew point sensor life depends on:

•Air temperature and flow passing over the sensor.

•The amount of fines (dust) in the process air.

•The amount of plasticizer vapor in the process air.

Once every six months, the dryer operator should monitor the initial dew point sensor readings and establish a periodic replacement schedule as needed.

Caution! Do not attempt to check the continuity or resistance of the dew point sensor.

5-3 Corrective Maintenance

This section provides you with the information necessary to correct or repair any issues which might appear during the normal operation of your dehumidifying dryer. Although we have listed how to perform these procedures, it is recommended that you call the Service Department to have any in-depth maintenance performed.

Symptoms of Worn Desiccant

The moisture absorption capacity of the desiccant used in your dehumidifying dryer degrades after an indefinite period of time. Useful life depends on variables such as the condition of the process filter, how much dust and fines have been passed through the filter and got into the desiccant chamber, and plasticizer vapors in the return air.

15, 30, & 60 cfm Compact Dryers

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Contents SDA Series 15, 30, & 60 cfm Compact Dehumidifying Dryers If the Shipment is Not Complete Shipping InformationUnpacking and Inspection Event of Shipping DamageTable of Contents Maintenance How to Use This Manual SafetySafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves Safety Tag InformationGeneral Responsibility ResponsibilityOperator Responsibility Remember Reporting a Safety Defect Maintenance ResponsibilityModels Covered in This Manual Functional DescriptionGeneral Description Mechanical Features Standard FeaturesElectrical Features Controller Features Safety Devices and InterlocksOptions Safety Device Lock-Outs Safety Circuit StandardsFail Safe Operation Uncrating the Equipment InstallationRigging and Placing the Dryer Suggested Lift Rigging for Cart Mount Dryers Suggested Lift Rigging for Machine Mounted Dryers Electrical ConnectionsChecking for Proper Blower Rotation Three-Phase Models Setup ProceduresOptional Aftercooler Installing Water LinesInitial Start-up Drying Hopper Air Trap ConsiderationsShutting Down the Dryer Auto-Tuning the DryerController Description and Operation SwitchesIndicator Lights OperationProcess Air Temperature Controller Lights in the Operation Indicator Section when Lit when Control Output 1 is on. The Out1Lit when Control Output 2 is on. Not used Indicator Name DescriptionAdjustment Level Indicator Name Description Setting the Process Air TemperatureE5CN Operating Parameters Entering Operating Parameters to Select Modes Process Air Dew Point Display Setting the High Dew Point AlarmOptional Controller Operation Dryer Operation ProceduresAlarm Display Messages High Temp Valve MTR Preventative Maintenance Schedule MaintenanceVacuuming Preventative MaintenanceRecommendations for Cleaning and Replacing Filters Servicing Process Air FiltersServicing the Dew Point Monitor Corrective MaintenanceCleaning with Compressed Air Symptoms of Worn DesiccantReplacing Worn Desiccant + First AID +Desiccant Bed Location and Disassembly Replacing the Process/Regeneration Heater ProceduresReplacement Procedures Replacing/Cleaning the Cooling CoilPage Introduction TroubleshootingProc Blwr Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsAppendix Technical SpecificationsAftercooler Design Specifications Drawings and DiagramsHigh Heat Model 180F to 400F Air Flow Schematic Level 1 Spare Parts List Electrical & Mechanical Spare Parts ListHI-CORE Desiccant Dryer 15/30/60 CFM Units 30 CFM 60 CFM 120V Control Common Parts 220V Control Common Parts Dryer Identification Serial Number Tag Returned Material PolicySales Department Service DepartmentTechnical Assistance Parts Department