Sterling SDAA 25-100 Setup Procedures, Checking for Proper Blower Rotation, Three-Phase Models

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3-4 Setup Procedures

This section provides the procedures necessary for configuring your Dehumidifying Dryer.

Configuration of your dryer includes checking for proper blower rotation, making dryer/drying hopper process air connections and the optional aftercooler (on 60 cfm models). We recommend that you carry out these procedures in the order given here.

Note: Before carrying out these procedures, install all equipment as described in this section.

Checking for Proper Blower Rotation

Three-Phase Models

Caution! In three-phase models, incorrect phasing of power leads can cause backward rotation of blower motors and CONTAMINATION OF THE DESICCANT!

Always check blower rotation before putting material in the drying hopper!

The blower is rotating properly when air flows from the delivery outlet.

Note: Holding your hand in front of the air return will also indicate if the blower rotates in the proper direction.

If the three-phase blower rotates improperly, reverse any two wires at the fused disconnect outside the dryer or at the disconnect/terminal in the control enclosure. This assures that the blower rotates in the proper direction.

Making Dryer/Drying Hopper Process Air Connections

Floor Mount Models

When making process air connections to your floor mounted dryer, ensure that you take into consideration and make arrangements for the following:

•Use high-temperature flexible dryer hose or rigid tubing to connect the dryer to the drying hopper.

•Keep the delivery hose to the drying hopper as short as possible to minimize heat loss. We strongly recommend insulated hose for maximum energy savings.

•Do not use insulated hose on the return from the drying hopper.

•The return air to the blower must be 150°F (66ºC) or below. If the return air temperature is not below this point, you should purchase and install the optional aftercooler to remove excessive heat. Consult the manufacturer for more information. Aftercooler considerations also apply to machine-mount models.

•Make sure that hoses are not kinked or collapsed.

•Drying hopper air inlet and outlet locations vary, but always connect hoses so the dry process air from the dryer enters the bottom of the drying hopper and flows out the top to return to the dryer inlet.

Dehumidifying Dryers

Chapter 3: Installation

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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 Safety How to Use This ManualSafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves General Responsibility ResponsibilityRemember Operator ResponsibilityReporting a Safety Defect Maintenance ResponsibilityDehumidifying Dryers Safety Functional Description Models Covered in This ManualGeneral Description What is desiccant? Standard FeaturesMechanical Features Electrical FeaturesSafety Devices and Interlocks Controller FeaturesOptions Safety Circuit Standards Safety Device Lock-OutsFail Safe Operation Installation Uncrating the EquipmentRigging 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 ConnectionsInstalling Water Lines Hose and Hose Clamp Drying Hopper Air Trap ConsiderationsOptional Aftercooler Initial Start-up Auto-Tuning the DryerPre-Startup Checks Starting Up the DryerShutting Down the Dryer Start-up OperationSwitches Indicator LightsController Description and Operation Process Air Temperature Controller Lit when Control Output 1 is on. The Out1Lit 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 ModesSetting the High Dew Point Alarm Process Air Dew Point DisplayOptional Redundant Safety Controller Display Setting the Redundant Safety ControllerWatlow 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 DryerMaintenance Preventative Maintenance SchedulePhotocopy 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 ProceduresTroubleshooting Problem Possible cause Corrective actionIntroduction Problem Possible cause Corrective action Check resin manufacturer’s data Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer Warranty Specifications WarrantyWarranty Restrictions AppendixWarranty Liabilities Optional ComponentsCustomer 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
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