Sterling SDAA 25-100 specifications

Page 39

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

Turn the Off-On-Start switch to the START position to 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 horn and light are activated. The process heater, regen heater, and process/regen blower are turned off. Pressing the ALARM RESET pushbutton will deactivate the alarm horn and light.

Reset the motor overload and turn the Off-On-Start switch to the START position to 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. 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”.

11.When a dew point fault is generated by the optional dew point controller, the alarm horn and light will activate. The alarm light will flash, indicating a non-critical fault. Press Alarm Reset to deactivate the alarm until the next dew point fault occurs.

12.The top 2 lines of the display show the HEAT and COOL times (in minutes) for the regeneration sequence. Changes to these times can be made by the operator as follows:

a.Press the up or down arrow until the cursor is positioned at the number to be changed.

b.Press the “+” key to increment the number, or the “-“ key to decrement the number.

c.Press the “OK” key to accept the value and write to the relay memory.

OR

d. Press the “ESC” key to cancel the changes.

Note: A change will NOT take effect until step 12-c is done.

13.The dryer is shut off by turning the control power switch to the OFF position.

14.Refer to Schematic drawing A0566087 enclosed in the control enclosure.

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 General Responsibility ResponsibilityRemember Operator ResponsibilityReporting a Safety Defect Maintenance ResponsibilityDehumidifying Dryers Safety Functional Description Models Covered in This ManualGeneral Description Electrical Features Standard FeaturesWhat is desiccant? Mechanical 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 ConnectionsMaking Dryer/Drying Hopper Process Air Connections Setup ProceduresThree-Phase Models Checking for Proper Blower RotationInstalling Water Lines Hose and Hose Clamp Drying Hopper Air Trap ConsiderationsOptional Aftercooler Starting Up the Dryer Auto-Tuning the DryerInitial Start-up Pre-Startup ChecksShutting 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 Setting the Process Air Temperature Indicator Name DescriptionLights in the Operation Indicator Section when Identifying Temperature Controller KeysE5CN 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 Vacuuming Preventative MaintenanceRecommendations for Cleaning and Replacing Filters Servicing Process Air FiltersServicing 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 Appendix WarrantyWarranty Specifications Warranty RestrictionsWarranty Liabilities Optional ComponentsCustomer Responsibilities Annex B Information Technical SpecificationsAftercooler Design Specifications Drawings and Diagrams Spare Parts ListLevel 2 & 3 Spare Parts List Electrical & Mechanical Returned Material Policy Safety Tag InformationWarranty Returns Dryer Safety TagsLocated on back of Dryer Dryer Identification Serial Number TagSales Department Service DepartmentTechnical Assistance Parts Department
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