Sterling STT70, STT40 manual Check resin manufacturer’s data

Page 54

STT40 / STT70

Problem

Possible cause

Corrective action

 

 

 

 

 

Check resin manufacturer’s data

 

Process temperature set too high

sheet for proper drying

 

temperature. Make sure plant

 

due to operator error.

personnel are aware of the

 

 

correct process temperature set

 

 

point.

 

High temperature alarm not set

Reset high temperature alarm.

Material in drying hopper cakes,

properly.

 

or meltdown occurs.

Process set point is out of

Restore temperature controller

 

acceptable range.

to factory pre-sets.

 

Function set for degrees Celsius

Verify correct Celsius or

 

(ºC), set point at degrees

 

Fahrenheit settings.

 

Fahrenheit (ºF).

 

 

 

Process thermocouple not in

Verify that the thermocouple is

 

properly installed in the inlet

 

airflow.

 

tube.

 

 

 

Burned out regeneration heater.

Repair or replace.

 

Contaminated or worn out

Replace.

 

desiccant.

 

 

 

Leaking process air hoses.

Repair or replace.

Poor dew point performance.

Dryer operates beyond its

Check dryer and drying hopper

capacity.

sizing.

 

 

Bad dew point sensor.

Replace.

 

Fouled dew point sensor

Clear obstruction. Air should

 

manifold.

flow freely through sensor.

 

Dirty filter.

Clean or replace filter element.

 

The internal mechanism is not

Properly insert the internal

 

inserted properly into the

 

mechanism into the housing.

 

housing.

 

 

 

The power supply is not

Properly connect the power

 

connected to its terminals

supply to the power supply

 

properly.

terminals.

Nothing displays when the

No power is supplied, or the

Supply a voltage of 85 to 125

supplied power is not within the

VAC to the power supply

controller is turned on.

specified range.

terminals of the controller.

 

 

Disconnect switch or Control

Check control power fuse for

 

continuity. Turn disconnect

 

Power switch not set to ON.

 

switch and control power switch

 

Control Power fuse blown.

 

ON.

 

 

 

Hopper release switch is not in

Turn the hopper release switch

 

the “I” position.

to the “I” position.

Troubleshooting 9-3

Page 53 Page 55
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Page 53 Page 55
Contents Operation Instructions Dehumidified air dryer STT40 STT70STT40 / STT70 STT40 / STT70 Table of contents 10-5 General Information STT40 / STT70 Explanations and information Legal basisField of application Safety instructions General Assembly OperationMaintenance For the safety of the device Start up Switching on the Dryer Initial OperationPower 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 Maintenance schedule System model # Serial # Every weekPreventative Maintenance Recommendations for Cleaning and Replacing FiltersServicing Process Air Filters Cleaning or Replacing the Return Air Filter STT40 / STT70Servicing the Dew Point Monitor Corrective Maintenance Symptoms of Worn DesiccantReplacing Worn Desiccant Remove Hose ClampsDisposing of Drying Agents Required Desiccant AmountsRemove Clamp Process Heater Procedures Replacing the Process HeaterReplacing/Cleaning the Cooling Coils Cooling Coil LocationReplacing the regeneration heating coil Heating CoilCleaning the Drying Hopper STT STT 60Functional description General Information ➅ ➄ Read the timer clock operating manual Drying Hopper Optional Drying HopperTemperature controller Hopper HeaterDefault Settings for Jumo TEMP. Controller Contact informationConnection to a Pneumatic Conveying System Optional Return Air Cooler OptionalTransporting, Assembly and Storage Transporting and Packing Assembly StorageAssembly instructions Grounding the equipment against electrostatic charging Grounding the equipmentElectrical Connection Connection of Return Air Cooler Optional STT70Troubleshooting IntroductionSTT40 / STT70 Check resin manufacturer’s data Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer STT70 Technical dataSTT40 Return Air Cooler optionalDimension Sheet Spare parts list STT40 Pos ID-number DescriptionSTT70 Operating unit Pos ID-number Description Control unit STT40 Control unit STT70Electrical manual Accessories Basic temperature controller settings STT40 CodeParameter Parameter set Basic temperature controller settings STT70 Quick Start Guides For STT 40 DryerOn 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.
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