Sterling SDAA 25-100 Adjustment Level Indicator Name Description, Tuned prior to dryer startup

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Adjustment Level

Indicator	Name	Description

	Auto-Tune Mode	See Page 19 of Chapter 3 for instructions on how
	(At)	to Auto-Tune your dryer.
		Note: Although the controller is calibrated at
		the factory, the manufacturer
		recommends that the unit be Auto-
		Tuned prior to dryer startup.

	Temperature Input	This setting is used to offset an error between the
	Shift Mode (TnS)	set point and the actual temperature. The entire
		input range is shifted by a set figure
		preprogrammed by the operator.

	Proportional Band	This setting controls the amount in which the
	Mode (P)	manipulated variable (MV) is proportionate to the
		deviated value or controller error.

	Integral Time	Setting this feature, gives the control an action that
	Mode (I)	is proportionate to the time integral of the control
		error. By using this setting, proportional action is
		used in combination with integral action to offset
		the control error and the set point will begin to
		match the control temperature (PV or process
		value).

	Derivative Time	Setting the derivative control provides the
	Mode (d)	controller with the ability to correct for a future
		error in the previously set process output.

Dehumidifying Dryers

Chapter 4: Operation

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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 Responsibility General ResponsibilityOperator Responsibility RememberMaintenance Responsibility Reporting a Safety DefectDehumidifying Dryers Safety Functional Description Models Covered in This ManualGeneral Description Mechanical Features Standard FeaturesWhat is desiccant? 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 Suggested Lift Rigging for Cart Mounted Dryers Recommended Dryer Lifting HardwareElectrical Connections Suggested Lift Rigging for Machine Mounted DryersChecking for Proper Blower Rotation Setup ProceduresThree-Phase Models Making Dryer/Drying Hopper Process Air ConnectionsInstalling Water Lines Hose and Hose Clamp Drying Hopper Air Trap ConsiderationsOptional Aftercooler Pre-Startup Checks Auto-Tuning the DryerInitial Start-up Starting Up the DryerShutting Down the Dryer Operation Start-upSwitches 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 Identifying Temperature Controller Keys Indicator Name DescriptionLights in the Operation Indicator Section when Setting the Process Air TemperatureE5CN Operating Parameters Adjustment Level Indicator Name Description Tuned prior to dryer startupEntering Operating Parameters to Select Modes ON, OFFSetting 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 Auto-Tuning the Dryer Shutting Down the DryerMaintenance Preventative Maintenance SchedulePhotocopy this page for your maintenance records Servicing Process Air Filters Preventative MaintenanceRecommendations for Cleaning and Replacing Filters VacuumingCleaning with Compressed Air Servicing the Dew Point MonitorCorrective Maintenance Symptoms of Worn DesiccantFirst AID Replacing Worn DesiccantConsult local disposal regulations for more information Procedures Replacing the Process HeaterTroubleshooting 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 Restrictions WarrantyWarranty Specifications AppendixWarranty Liabilities Optional ComponentsCustomer Responsibilities Technical Specifications Annex B InformationDrawings and Diagrams Spare Parts List Aftercooler Design SpecificationsLevel 2 & 3 Spare Parts List Electrical & Mechanical Dryer Safety Tags Safety Tag InformationWarranty Returns Returned Material PolicyDryer Identification Serial Number Tag Located on back of DryerParts Department Service DepartmentTechnical Assistance Sales Department