Sterling SDAA 25-100 specifications Model Heating Cooling 15 cfm 30 cfm 60 cfm

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3.Once the control power is on and no fault conditions exist, turning the OFF-ON- START switch to the START position will start the dryer as follows:

a.The process heater is turned on and controlled by the E5CN controller.

b.The process/regen blower is started.

c.The regen heater is turned on and the regeneration timing sequence is initiated. The regen heater is controlled by the E5C2 controller. For default timing settings for regeneration, see the table below.

Model

Heating

Cooling

15 cfm

35

30

30 cfm

 

 

60 cfm

35

30

Note: In a humid environment, you may change the setting to 40 / 25 for better results.

4.If either the left or right bed safety temperature switch opens, a regen heater fault is generated. “HIGH TEMP” is displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and process/regen blower are turned off.

Turn the Off-On-Start switch to the START position to deactivate the alarm light and restart the dryer. If the switch is still open, the dryer will not restart.

5.If the OMRON controller faults, the optional redundant high temperature safety device opens, or the process heater safety switch opens, a heater fault is generated. “HIGH TEMP” is displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and process/regen blower are turned off.

Turn the OFF-ON-START switch to the START position to deactivate the alarm light and restart the dryer. If the fault condition still exists, the dryer will not restart.

6.If the process blower overload trips, a process blower fault is generated. “PROC BLWR” is displayed on the relay screen. The alarm light is activated. The process heater, regen heater, and process/regen blower are turned off.

Reset the motor overload and turn the Off-On-Start switch to the START position to deactivate the alarm light and restart the dryer.

7.The valve position limit switch enables the right bed heater and provides an input signal to the programmable relay when actuated by the cam lobe. When the cam lobe position is high, the right bed is activated. When the cam lobe position is low, the left bed is activated. Each heater is ON-OFF controlled by the OMRON E5C2 controller.

8.Upon completion of the HEAT portion of the regeneration sequence, the regen heaters are disabled by the programmable relay and the COOL time begins.

9.Once the Cool time has expired, the valve motor is turned on until the cam switch makes a transition. Upon making a transition, the timing sequence is restarted for the new bed.

10.When no fault conditions exist, the display reads “SYSTEM NORMAL”.

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 Standard Features What is desiccant?Mechanical 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 Suggested Lift Rigging for Cart Mounted Dryers Recommended Dryer Lifting HardwareElectrical Connections Suggested Lift Rigging for Machine Mounted DryersSetup Procedures Three-Phase ModelsChecking for Proper Blower Rotation Making Dryer/Drying Hopper Process Air ConnectionsInstalling Water Lines Hose and Hose Clamp Drying Hopper Air Trap ConsiderationsOptional Aftercooler Auto-Tuning the Dryer Initial Start-upPre-Startup Checks 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 Indicator Name Description Lights in the Operation Indicator Section whenIdentifying Temperature Controller Keys 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 Preventative Maintenance Recommendations for Cleaning and Replacing FiltersServicing Process Air 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 Warranty SpecificationsWarranty Restrictions 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 Safety Tag Information Warranty ReturnsDryer Safety Tags Returned Material PolicyDryer Identification Serial Number Tag Located on back of DryerService Department Technical AssistanceParts Department Sales Department
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