Sterling SDA Series 25-100 15 cfm, 60 cfm Initial Start-up, Drying Hopper Air Trap Considerations

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Drying Hopper Air Trap Considerations

Our exclusive air trap assembly on the top of the drying hopper prevents ambient air from contaminating the material being dried. To ensure that your unit will operate at peak efficiency, do the following:

•Keep the material level at the mid point of the air trap

This can be achieved by utilizing a hopper loader or vacuum conveying system to supply material to the drying system.

Optional Aftercooler

Water-cooled 15 and 30 cfm models use a water-to-air heat exchanger as an aftercooler. Cooling water is required for this design (3 gpm at 85°F or lower). Return air from the hopper passes through the air filter to trap fines and dust before entering the heat exchanger.

Installing Water Lines

(Hose and Hose Clamp)

When installing the water lines, ensure that the aftercooler utilizes either tower, chilled or city water up to 85°F (29°C). Recommended flow rate is three (3 gpm) gallons per minute (11 liters per minute).

3-5 Initial Start-up

Pre-Startup Checks

;Check the process and return hoses for tight connections.

;Check all companion equipment, such as the drying hopper; verify that the loading system is ready for operation.

;Verify that all dryer electrical connections are tight.

Caution! Clean the rust-preventing oil from inside the drying hopper.

Failure to clean the hopper fouls the desiccant and voids your warranty!

;Verify that the dryer’s thermocouple is properly connected in the center of the drying hopper’s delivery tube.

;Verify that the temperature control has been configured for your specified scale (ºF or ºC).

Starting Up the Dryer

1.Turn on (energize) the disconnect switch in your power drop, then turn on the disconnect switch on the dryer (3 phase only).

2.Turn the system ON/OFF switch to ON to start the dryer.

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. Dryer performance is compromised if hopper is not full!

5.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

15, 30, & 60 cfm Compact Dryers

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Contents SDA Series 15, 30, & 60 cfm Compact Dehumidifying Dryers Event of Shipping Damage Shipping InformationUnpacking and Inspection If the Shipment is Not CompleteTable of Contents Maintenance Safety How to Use This ManualSafety Symbols Used in this Manual Safety Tag Information Wear Safety Glasses and Work GlovesResponsibility General ResponsibilityOperator Responsibility Remember Maintenance Responsibility Reporting a Safety DefectFunctional Description Models Covered in This ManualGeneral Description Standard Features Mechanical FeaturesElectrical Features Safety Devices and Interlocks Controller FeaturesOptions Safety Circuit Standards Safety Device Lock-OutsFail Safe Operation Installation Uncrating the EquipmentRigging and Placing the Dryer Suggested Lift Rigging for Cart Mount Dryers Electrical Connections Suggested Lift Rigging for Machine Mounted DryersSetup Procedures Checking for Proper Blower Rotation Three-Phase ModelsDrying Hopper Air Trap Considerations Installing Water LinesInitial Start-up Optional AftercoolerAuto-Tuning the Dryer Shutting Down the DryerOperation SwitchesIndicator Lights Controller Description and OperationProcess Air Temperature Controller Indicator Name Description Lit when Control Output 1 is on. The Out1Lit when Control Output 2 is on. Not used Lights in the Operation Indicator Section whenSetting the Process Air Temperature Adjustment Level Indicator Name DescriptionE5CN Operating Parameters Entering Operating Parameters to Select Modes Setting the High Dew Point Alarm Process Air Dew Point DisplayOptional Dryer Operation Procedures Controller OperationAlarm Display Messages High Temp Valve MTR Maintenance Preventative Maintenance ScheduleServicing Process Air Filters Preventative MaintenanceRecommendations for Cleaning and Replacing Filters VacuumingSymptoms of Worn Desiccant Corrective MaintenanceCleaning with Compressed Air Servicing the Dew Point Monitor+ First AID + Replacing Worn DesiccantDesiccant Bed Location and Disassembly Procedures Replacing the Process/Regeneration HeaterReplacing/Cleaning the Cooling Coil Replacement ProceduresPage Troubleshooting IntroductionProc Blwr Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleTechnical Specifications AppendixDrawings and Diagrams Aftercooler Design SpecificationsHigh Heat Model 180F to 400F Air Flow Schematic Spare Parts List Level 1 Spare Parts List Electrical & MechanicalHI-CORE Desiccant Dryer 15/30/60 CFM Units 30 CFM 60 CFM 120V Control Common Parts 220V Control Common Parts Returned Material Policy Dryer Identification Serial Number TagParts Department Service DepartmentTechnical Assistance Sales Department