Manuals / Sterling / Household Appliance / Dehumidifier

Sterling manual STT40 / STT70

Models: STT40 STT70

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		STT40 / STT70
8.2. Grounding the equipment against electrostatic charging		8-2
8.3. Electrical Connection		8-3
8.4. Connection of Return Air Cooler (Optional)		8-4
9.	Troubleshooting	9-1
9.1. Introduction		9-1
9.2. Determining Temperature Controller Errors or Sensor Errors		9-4
	Using a Thermocouple	9-4
	Using a Platinum Resistance Thermometer	9-4
10.	Technical data	10-5
10.1. STT40		10-5
10.2. STT70		10-5
10.3. Dimension Sheet		10-6
11.	Spare parts list	11-1
12.	Electrical manual	12-1
13.	Accessories	13-1

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Contents

Sterling Material Processing Operation InstructionsDehumidified air dryer STT40 STT70 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 UsageSTT40 / STT70 2. Safety instructionsSafety instructions 2.1 General 2.1.2. Operation 2.1.1. Assembly2.1.3. Maintenance 2.2. For the safety of the device Start up 3. Start upSTT40 / STT70 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” keyWait until the blower has stopped 3.3. Switching the Dryer offThe “power” signal lamp turns off STT40 / STT70 4. Error and error correctionError and error correction 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 MonitorFIRST AID 5.3. Corrective Maintenance5.3.1. Symptoms of Worn Desiccant 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 DisassemblyHazardous electrical current present 5.5.1.Replacing/Cleaning the Cooling CoilsFigure 5 Cooling Coil Location and Disassembly 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 STT Figure 7 STTFigure 8 STT 60 - STT Functional description 6. Functional descriptionSTT40 / STT70 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 OptionalSTT40 / STT70 7. Transporting, Assembly and StorageTransporting, Assembly and Storage 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 actionCorrective action ProblemPossible cause Using a Platinum Resistance Thermometer Using a ThermocoupleProblem Possible cause10.1. STT40 10. Technical data10.2. STT70 Return Air Cooler optional10.3. Dimension Sheet STT40 / STT70 11. Spare parts listSpare parts list ID-number STT40Description Return air cooler optionalID-number STT70Description Return air cooler optionalDescription Operating unitID-number Hopper heater Control unit STT40Control unit STT70 Hopper heaterElectrical manual 12. Electrical manualSTT40 / STT70 STT40 / STT70 13. AccessoriesAccessories 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