Sterling manual Cleaning or Replacing the Return Air Filter, STT40 / STT70

Page 27

STT40 / STT70

5.2.2. Cleaning or Replacing the Return Air Filter

STT40 / STT70

•Detach the screw on the housing of the return air filter and remove the housing cover.

•Remove the nut of the filter cartridge.

•Remove the filter cartridge.

•Clean the inside of the return air filter housing. Use non-fibrous cleaning cloths or an industrial type vacuum cleaner.

•Vacuuming - Try vacuum-cleaning a soiled filter first. Vacuuming removes most large particles and surface contaminants, and may suffice for the first time you clean a filter. Use a commercial-duty (recommended) or household vacuum cleaner. Vacuum the filter from the air intake (dirty) side only.

•Cleaning with Compressed Air - Blow clean, dry compressed air up and down the pleats, blowing from the inside out. Remove loose dirt from the filter with compressed air or vaccum from the outside.

Figure 1: Air Filter Location & Disassembly

Return Air Filter

)DO NOT clean/wash filter with water!

•After each cleaning:

•Inspect the filter element. Briefly hold a light bulb behind the element and look for any fatigued paper or residual dirt. Inspect for holes and tears by looking though the filter toward a bright light. Check for damaged gaskets or dented metal parts. Do not re-use a damaged filter!

•Check the gasket for damage. A damaged gasket allows contaminants into the process. Replace as needed.

•Re-install the cleaned/new filter cartridge.

•Rethread the nut that holds the filter in place.

•Install the lid of the return air filter housing.

)Never operate the dryer without a return air filter.

Purchase order numbers for a return air filter on the STT40/70 dryer are:

when operating without return air cooler: ID 83957

when operating with return air cooler: ID 83956

Maintenance 5-5

Page 26 Page 28
Image 27
Page 26 Page 28
Contents STT70 Operation Instructions Dehumidified air dryer STT40STT40 / STT70 STT40 / STT70 Table of contents 10-5 General Information STT40 / STT70 Explanations and information Legal basisField of application Safety instructions General Operation AssemblyMaintenance For the safety of the device Start up Initial Operation Switching on the DryerPower signal lamp turns off Switching the Dryer on For operation with the optional timer clockContinuous Operation Setting the Drying Temperature Autotuning the temperature controller Switching the Dryer off Error and error correction Following errors can cause an alarm Blower Regeneration heaterHopper heater Maintenance STT40 / STT70 System model # Serial # Every week Maintenance schedulePreventative Maintenance Recommendations for Cleaning and Replacing FiltersServicing Process Air Filters STT40 / STT70 Cleaning or Replacing the Return Air FilterServicing the Dew Point Monitor Symptoms of Worn Desiccant Corrective MaintenanceRemove Hose Clamps Replacing Worn DesiccantRequired Desiccant Amounts Disposing of Drying AgentsReplacing the Process Heater Remove Clamp Process Heater ProceduresCooling Coil Location Replacing/Cleaning the Cooling CoilsHeating Coil Replacing the regeneration heating coilCleaning the Drying Hopper STT 60 STTFunctional description General Information ➅ ➄ Read the timer clock operating manual Drying Hopper Drying Hopper OptionalHopper Heater Temperature controllerContact information Default Settings for Jumo TEMP. ControllerReturn Air Cooler Optional Connection to a Pneumatic Conveying System OptionalTransporting, Assembly and Storage Transporting and Packing Storage AssemblyAssembly instructions Grounding the equipment Grounding the equipment against electrostatic chargingElectrical Connection STT70 Connection of Return Air Cooler OptionalIntroduction TroubleshootingSTT40 / STT70 Check resin manufacturer’s data Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer Return Air Cooler optional Technical dataSTT40 STT70Dimension Sheet Spare parts list Pos ID-number Description STT40STT70 Operating unit Pos ID-number Description Control unit STT70 Control unit STT40Electrical manual Accessories Basic temperature controller settings STT40 CodeParameter Parameter set Basic temperature controller settings STT70 For STT 40 Dryer Quick Start GuidesOn without timer On with timerPosition O Set Point Arrow down Process Display LED Status LED Ramp/ProgramArrow up Page Proper Shut-down Guide for STT 40 Dryer Main power High Temp Safety Quick Start Guide for STT 70 DryerHeater Connection Thermocouple Exit Page Proper Shut-down Guide for STT 40 Dryer Parts Department

STT40, STT70 specifications

The Sterling STT40 and STT70 are one of the most noteworthy entries in the landscape of compact, high-performance generators, designed to serve a variety of applications in both residential and commercial settings. Built with cutting-edge technology, these models exhibit durability and reliability, ensuring that power needs are met efficiently.

The Sterling STT40 is a robust 40 kW generator that is ideal for small businesses, remote sites, and residential backup power. It features a high-quality diesel engine, providing fuel efficiency along with impressive power output. The generator incorporates a fully automatic transfer switch (ATS), which ensures seamless power transition during outages. With an IP54 rating, it offers excellent protection against dust and water, making it suitable for outdoor use in diverse environments.

In contrast, the Sterling STT70 boasts a greater power output of 70 kW, making it suited for larger commercial applications or industrial uses. Similar to the STT40, the STT70 is equipped with a top-tier diesel engine that delivers optimal performance and longevity. Its heavy-duty construction allows it to operate efficiently under strenuous conditions. The STT70 also features advanced cooling systems and a sound-attenuated enclosure, which minimizes operational noise, making it a perfect choice for noise-sensitive situations.

Both models utilize innovative technologies to enhance user experience and operational efficiency. An intuitive digital control panel simplifies monitoring and management, providing real-time data on voltage, current, and frequency. This allows users to make informed decisions about power usage and maintenance needs. Additionally, remote monitoring capabilities enable owners to oversee generator performance from virtually anywhere, maximizing uptime.

Safety is another key aspect of both generator models. They are equipped with automatic shutdown features that activate in the event of low oil pressure or overheating, minimizing the risk of damage and ensuring safety during operation.

In summary, the Sterling STT40 and STT70 generators stand out in the market due to their reliability, advanced technology, and robust safety features. They are perfect for anyone seeking dependable power solutions, whether for residential, business, or industrial needs. With their combination of power efficiency and durability, they remain top contenders in the generator space.
Top Page Image Contents