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Sterling manual Functional description, STT40 / STT70

Models: STT40 STT70

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6. Functional description

STT40 / STT70

6. Functional description

This functional description is addressed to the operators of the equipment.

This functional description assumes the operator has a general familiarity with drying equipment.

Verify that the operators have the appropriate skills.

Functional description 6-15

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Sterling manual Functional description, STT40 / STT70

Contents

Dehumidified air dryer STT40 STT70 Operation InstructionsSterling Material Processing Sterling Material Processing Technical service Service department5200 West Clinton Ave Milwaukee, WI TelephoneSTT40 / STT70 Table of contents STT40 / STT70 1.1. Warnings and symbols 1. General InformationCaution High noise pollution 1.3. Legal basis 1.2. Explanations and information1.4. Field of application 1.5. Notes on UsageSafety instructions 2. Safety instructionsSTT40 / STT70 2.1 General 2.1.2. Operation 2.1.1. Assembly2.1.3. Maintenance 2.2. For the safety of the device STT40 / STT70 3. Start upStart up 3.1. Initial Operation 3.1.1. Switching on the DryerWait until the blower has stopped The “power” signal lamp turns offFor operation with the optional timer clock 3.2.1. Switching the Dryer onFor operation without timer clock 3.2. Continuous Operation3.2.2. Setting the Drying Temperature If “tunE” stops flashing, Autotuning is finished Autotuning the temperature controllerPress the “EXIT” key for at least 2 seconds Press the “EXIT” keyThe “power” signal lamp turns off 3.3. Switching the Dryer offWait until the blower has stopped Error and error correction 4. Error and error correctionSTT40 / STT70 Regeneration heater The following errors can cause an alarm BlowerRegeneration heater Hopper heater5. Maintenance Please observe the maintenance schedule Photocopythis page for your maintenance records 5.1. Maintenance scheduleSystem model # Serial #5.2.1. Servicing Process Air Filters 5.2. Preventative MaintenanceDO NOT clean/wash filter with water Figure 1 Air Filter Location & Disassemblywhen operating without return air cooler ID when operating with return air cooler IDThe sensor will be destroyed 5.2.3. Servicing the Dew Point Monitor5.3.1. Symptoms of Worn Desiccant 5.3. Corrective MaintenanceFIRST AID 5.3.2. Replacing Worn Desiccant Figure 2 Desiccant Bed Location and DisassemblyDESICCANT BEDS ARE HOT DURING OPERATION Remove Hose Clamps Remove ClampFigure 3 Required Desiccant Amounts 5.4. Disposing of Drying Agents5.5. Replacing the Process Heater Figure 4 Process Heater Location and DisassemblyFigure 5 Cooling Coil Location and Disassembly 5.5.1.Replacing/Cleaning the Cooling CoilsHazardous electrical current present 5.5.2. Replacing the regeneration heating coil Figure 6 Heating Coil Location and DisassemblyHazardous electrical current present Heating Coil5.6. Cleaning the Drying Hopper Figure 8 STT 60 - STT Figure 7 STTSTT STT40 / STT70 6. Functional descriptionFunctional description The dryer is rated for continuous operation 6.1. General Information➅➄ ➃ Figure 9 Functional diagram of STT40 / STT70Figure 10 Operating unit Read the timer clock operating manualFigure 11 Drying Hopper 6.2. Drying Hopper OptionalFigure 12 Temperature controller 6.2.1. Hopper HeaterPARAMETERS THAT ARE CHANGED IN TESTING AREA DEFAULT SETTINGS FOR JUMO TEMP. CONTROLLERPARAMETERS THAT ARE NOT CHANGED FACTORY DEFAULTS Contact informationFigure 13 Suction Box 6.4. Return Air Cooler OptionalTransporting, Assembly and Storage 7. Transporting, Assembly and StorageSTT40 / STT70 7.1. Transporting and Packing 7.3. Storage 7.2. Assembly8. Assembly instructions 8.1.Installation of the exhaust fan for regeneration of exhaust STT40 max. 1.1 kW, STT70 max. 2.0 kW 8.3. Electrical ConnectionThe fuse protection must have STT40 16 A STT70 16 A8.4. Connection of Return Air Cooler Optional Problem 9. Troubleshooting9.1. Introduction Possible causeProcess heaters are faulty ProblemPossible cause Corrective actionPossible cause ProblemCorrective action Using a Platinum Resistance Thermometer Using a ThermocoupleProblem Possible cause10.1. STT40 10. Technical data10.2. STT70 Return Air Cooler optional10.3. Dimension Sheet Spare parts list 11. Spare parts listSTT40 / STT70 ID-number STT40Description Return air cooler optionalID-number STT70Description Return air cooler optionalID-number Operating unitDescription Hopper heater Control unit STT40Control unit STT70 Hopper heaterSTT40 / STT70 12. Electrical manualElectrical manual Accessories 13. AccessoriesSTT40 / STT70 Code Basic temperature controller settings STT40Parameter Parameter setCode Basic temperature controller settings STT70Parameter Parameter set14.1. for STT 40 Dryer 14. Quick Start GuidesOFF On with timer On without timer5.Turn the hopper heater switch to position “I” Position “O” Position “I”Process Display LED “Status” LED Ramp/Program Set Point PGM Arrow downEXIT Arrow up Note Due to the following circumstancesPage Position “O” Position “I” OFF 14.2.Proper Shut-downGuide for STT 40 DryerOFF On with timer On without timerMain power High Temp Safety 14.3. Quick Start Guide for STT 70 DryerPosition “O” Position “I” EXITSet Point PGM Arrow down Process Display LED “Status” LED Ramp/Programinitial dryer start-up Note Due to the following circumstancesPosition “O” Position “I” OFF 14.4. Proper Shut-downGuide for STT 40 DryerParts Department Service DepartmentSales Department Contract Department