Manuals / Sterling / Household Appliance / Dehumidifier

Sterling STT70 Explanations and information, Legal basis, Field of application, Notes on Usage

Models: STT40 STT70

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1.2. Explanations and information

STT40 / STT70

1.2. Explanations and information

Various terms and designations are used in these operating instructions to ensure clarity. Therefore please note that the terms used in the text stand for the corresponding explanations listed below.

•Equipment: ”Equipment” can mean an individual unit, a machine or an installation.

•Operating personnel: The ”operating personnel” are persons operating the equipment under their own responsibility or according to instructions.

•Operator: The ”operator” of the equipment (production manager, foreman, etc.) is the person responsible for all production sequences. The operator instructs the operating personnel what is to be done.

•Operating instructions: The ”operating instructions” describe the interaction of the equipment, production sequences or methods. The operating instructions must be compiled by the operator of the equipment.

•Equipment foreman: When several operating personnel work on one machine, the ”equipment foreman” coordinates the operating sequences. The equipment foreman must be appointed by the operator.

•Trained personnel: ”Trained personnel” are persons whom, due to their training, are authorized to carry out the required work.

1.3. Legal basis

See “Manufacturer’s Certificate” resp. “Certificate of Conformity”.

1.4. Field of application

This dryer has been manufactured to dry thermoplastic granules and regrind before processing. This machine removes all remaining moisture from the granules both inside and out, regardless of climate or ambient air conditions.

1.5. Notes on Usage

•Experienced operators can begin directly with the chapter on “Start-up” if the unit has been properly installed.

•If the unit has not been installed yet, observe the instructions in the chapter on “Assembly Instructions” and “Transport, Assembly and Storage”.

General Information 1-3

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Sterling STT70, STT40 manual Explanations and information, Legal basis, Field of application, Notes on Usage

Contents

Sterling Material Processing Operation InstructionsDehumidified air dryer STT40 STT70 Technical service Service department Sterling Material Processing5200 West Clinton Ave Milwaukee, WI TelephoneSTT40 / STT70 Table of contents STT40 / STT70 1. General Information 1.1. Warnings and symbolsCaution High noise pollution 1.2. Explanations and information 1.3. Legal basis1.4. Field of application 1.5. Notes on UsageSTT40 / STT70 2. Safety instructionsSafety instructions 2.1 General 2.1.1. Assembly 2.1.2. Operation2.1.3. Maintenance 2.2. For the safety of the device Start up 3. Start upSTT40 / STT70 3.1.1. Switching on the Dryer 3.1. Initial OperationThe “power” signal lamp turns off Wait until the blower has stopped3.2.1. Switching the Dryer on For operation with the optional timer clockFor operation without timer clock 3.2. Continuous Operation3.2.2. Setting the Drying Temperature Autotuning the temperature controller If “tunE” stops flashing, Autotuning is finishedPress 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 The following errors can cause an alarm Blower Regeneration heaterRegeneration heater Hopper heater5. Maintenance Please observe the maintenance schedule 5.1. Maintenance schedule Photocopythis page for your maintenance recordsSystem model # Serial #5.2. Preventative Maintenance 5.2.1. Servicing Process Air FiltersFigure 1 Air Filter Location & Disassembly DO NOT clean/wash filter with waterwhen operating without return air cooler ID when operating with return air cooler ID5.2.3. Servicing the Dew Point Monitor The sensor will be destroyedFIRST AID 5.3. Corrective Maintenance5.3.1. Symptoms of Worn Desiccant Figure 2 Desiccant Bed Location and Disassembly 5.3.2. Replacing Worn DesiccantDESICCANT BEDS ARE HOT DURING OPERATION Remove Hose Clamps Remove Clamp5.4. Disposing of Drying Agents Figure 3 Required Desiccant AmountsFigure 4 Process Heater Location and Disassembly 5.5. Replacing the Process HeaterHazardous electrical current present 5.5.1.Replacing/Cleaning the Cooling CoilsFigure 5 Cooling Coil Location and Disassembly Figure 6 Heating Coil Location and Disassembly 5.5.2. Replacing the regeneration heating coilHazardous electrical current present Heating Coil5.6. Cleaning the Drying Hopper STT Figure 7 STTFigure 8 STT 60 - STT Functional description 6. Functional descriptionSTT40 / STT70 6.1. General Information The dryer is rated for continuous operationFigure 9 Functional diagram of STT40 / STT70 ➅➄ ➃Read the timer clock operating manual Figure 10 Operating unit6.2. Drying Hopper Optional Figure 11 Drying HopperFigure 12 Temperature controller 6.2.1. Hopper HeaterDEFAULT SETTINGS FOR JUMO TEMP. CONTROLLER PARAMETERS THAT ARE CHANGED IN TESTING AREAPARAMETERS THAT ARE NOT CHANGED FACTORY DEFAULTS Contact information6.4. Return Air Cooler Optional Figure 13 Suction BoxSTT40 / STT70 7. Transporting, Assembly and StorageTransporting, Assembly and Storage 7.1. Transporting and Packing 7.2. Assembly 7.3. Storage8. Assembly instructions 8.1.Installation of the exhaust fan for regeneration of exhaust 8.3. Electrical Connection STT40 max. 1.1 kW, STT70 max. 2.0 kWThe fuse protection must have STT40 16 A STT70 16 A8.4. Connection of Return Air Cooler Optional 9. Troubleshooting Problem9.1. Introduction Possible causeProblem Process heaters are faultyPossible cause Corrective actionCorrective action ProblemPossible cause Using a Thermocouple Using a Platinum Resistance ThermometerProblem Possible cause10. Technical data 10.1. STT4010.2. STT70 Return Air Cooler optional10.3. Dimension Sheet STT40 / STT70 11. Spare parts listSpare parts list STT40 ID-numberDescription Return air cooler optionalSTT70 ID-numberDescription Return air cooler optionalDescription Operating unitID-number Control unit STT40 Hopper heaterControl unit STT70 Hopper heaterElectrical manual 12. Electrical manualSTT40 / STT70 STT40 / STT70 13. AccessoriesAccessories Basic temperature controller settings STT40 CodeParameter Parameter setBasic temperature controller settings STT70 CodeParameter Parameter set14. Quick Start Guides 14.1. for STT 40 DryerOn without timer OFF On with timer5.Turn the hopper heater switch to position “I” Position “O” Position “I”Set Point PGM Arrow down Process Display LED “Status” LED Ramp/ProgramEXIT Arrow up Note Due to the following circumstancesPage 14.2.Proper Shut-downGuide for STT 40 Dryer Position “O” Position “I” OFFOn without timer OFF On with timerMain power High Temp Safety 14.3. Quick Start Guide for STT 70 DryerEXIT Position “O” Position “I”Set Point PGM Arrow down Process Display LED “Status” LED Ramp/ProgramNote Due to the following circumstances initial dryer start-up14.4. Proper Shut-downGuide for STT 40 Dryer Position “O” Position “I” OFFService Department Parts DepartmentSales Department Contract Department