Sterling Plumbing 100, 225, 90, 150 What is Desiccant?, Process/Regeneration Cycle

Page 13

2-7 What is Desiccant?

Desiccant is a material which attracts and holds (absorbs) water from the air. Our dehumidifying dryers use a synthetic crystalline metal aluminosilicate desiccant blended with a clay binder and formed beads.

Absorbed water is driven from saturated desiccant by heating it to a high temperature (reducing desiccant capacity to hold water) and forcing air through it. This moisture removal process is called regeneration.

2-8 The Process/Regeneration Cycle

Our dehumidifying dryers have two desiccant beds. While one bed is on-line in the process air loop, the other is off-line being regenerated.

When a desiccant bed is on-line, it absorbs moisture from the process air. In time, the bed becomes saturated with moisture and needs to be regenerated. The dryer automatically redirects the process airflow to the second bed and starts the regeneration cycle on the first bed.

During regeneration, the dryer heats air to over 500°F (260ºC) and forces it through the desiccant bed. Moisture driven off the bed bleeds to the atmosphere.

If you measure the temperature of the air bled to the atmosphere (bleed temperature), you should observe a rise after a period of time. This condition, bed breakthrough, indicates that the bed is dry. At bed breakthrough, the bleed air temperature peaks between 350°F (176ºC) and 400°F (204ºC).

The Dew Point meter measures the dew point of the process air. A properly regenerated bed produces process air dew point of -40°F (-40ºC). This ultra-low humidity level is more than adequate to dry plastics to as little as .003% moisture, depending on the process and material.

2-9 Specifying a Drying/Conveying System

Many variables were considered in the selection of your drying system, including type of materials, residence time, throughput of the extruder or injection molding machine, ambient air moisture and temperature, and the altitude at the processing site. If your operating environment changes, the manufacturer can advise you on necessary equipment and process time and temperature modifications required for your system.

Cabinet Series Dehumidifying Dryer

13

Page 12 Page 14
Image 13
Page 12 Page 14
Contents 90,100, 150, 225 CFM Cabinet Series Dehumidifying Dryers Bulletin No. DH1-630.1 Table of Contents TROUBLESHOOTING…………………………….48 Charts and Figures How to Use This Manual SafetySafety Symbols Used in this Manual Description General Responsibility ResponsibilityOperator Responsibility Maintenance Responsibility Reporting a Safety Defect General Information Closed Loop Drying System Dryer Air Flow DiagramProcess/Regeneration Cycle What is Desiccant?Specifying a Drying/Conveying System Connecting Compressed Air InstallationPositioning Your Dryer Making Electrical ConnectionsProcess Air Connections Between the Dryer and Drying Hopper Connecting Cooling Water to the Optional AftercoolerDrying Hopper Rocker Switches Control Panel Indicator Lights and SwitchesControls Indicating LightsSignal to the PLC controller to shut down dryer Typical Dyer Interface Panel Identifying Temperature Controller LED Indicators Process Air Temperature ControllerProcess Air Dew Point Display Down Arrow Button Identifying Temperature Controller Buttons Display ButtonUp Arrow Button Auto-Tune ButtonAvailable E5CK Modes E5CK Operating ParametersPLC Controller Setting the Process Air TemperatureName Description PLC LED IndicatorsOutput LED Indicators Typical Subpanel Layout Typical Cabinet Dryer Electrical Schematic, Drawing Typical Cabinet Dryer Electrical Schematic, Drawing 222 Setting the High Dew Point Alarm Setting the Shift on Dew PointEntering Operating Parameters to Select Modes Timer Optional Seven Day TimerDisplay Setting the Current Day of the Week, Hour, and Minute Programming the Optional TimerChecking the Set Time Daily Timer OperationMultiple-Day Operation Day Override Canceling the SettingsCabinet Series Dehumidifying Dryer Pre-Startup Checks OperationStartup ShutdownPage Work Rules MaintenanceServicing Process Air Filters Cleaning with Compressed Air Recommendations for Cleaning and Replacing FiltersVacuuming WashingSystem model # Serial # Preventative Maintenance ChecklistJan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Every two yearsServicing the Dew Point Monitor Symptoms of Worn DesiccantFirst Aid Replacing Worn DesiccantDryer Large bead Type Small bead Type Total per bed Replacing the Process HeaterLbs Replacing the Regeneration Heater Mode Security levelChanging the Controller Security Level Mode Parameter Setting range Default Factory Setting Mode Parameter Setting rangeOption Boards Parameter Setting rangeOption Type RE232C RS-485 Event Input Transfer Output Restoring Factory Defaults on the Dew Point ControllerPID Cabinet Series Dehumidifying Dryer Problem Possible cause Corrective action TroubleshootingStop the dryer PLC Using a Thermocouple Determining Temperature Controller Errors or Sensor ErrorsUsing a Platinum Resistance Thermometer Service Department Technical SpecificationsContact Information Parts Department

100, 150, 90, Cabinet Series Dehumidifying Dryer, 225 specifications

The Sterling Plumbing 150, 225, 90 Cabinet Series Dehumidifying Dryer is a state-of-the-art appliance designed to effectively eliminate excess moisture in various environments. This versatile dryer is ideal for residential, commercial, and industrial applications, providing reliable moisture control to enhance air quality and prevent damage due to humidity.

One of the main features of the Sterling Plumbing Dehumidifying Dryer is its impressive moisture removal capacity. With options available for 150, 225, and 90 pint per day configurations, this unit can cater to different sizes and types of spaces, making it a suitable choice for everything from small basements to large warehouses. Its cabinet design allows for efficient air circulation, maximizing its dehumidification capabilities while remaining compact and easy to install.

The technology integrated within the Sterling Plumbing Dehumidifying Dryer is advanced, incorporating a high-efficiency compressor and a durable, corrosion-resistant housing. This ensures that the unit operates quietly and efficiently, providing a long service life with minimal maintenance required. The dryer features an automatic humidistat that monitors the humidity levels in the environment, adjusting its operation to maintain desired settings without manual intervention. This smart technology not only conserves energy but also ensures optimal performance.

In addition to its dehumidification function, the Sterling dryer is equipped with a built-in air filtration system that captures dust and allergens, contributing to overall indoor air quality. The easy-to-clean filters are designed for durability, ensuring that the unit remains functional and effective over time.

Another notable characteristic of the Sterling Plumbing Dehumidifying Dryer is its user-friendly interface. The control panel is designed to be intuitive, allowing users to easily set their preferred humidity levels and adjust operation modes. With options for continuous drainage, users can also opt to run the unit without worrying about emptying the water tank frequently.

Overall, the Sterling Plumbing 150, 225, 90 Cabinet Series Dehumidifying Dryer is a powerful, efficient, and reliable moisture management solution. With its blend of advanced technology, user-friendly features, and robust design, it is an essential appliance for anyone looking to improve indoor air quality and protect their space from the damaging effects of excess moisture.
Top Page Image Contents