Options, Safety Devices and Interlocks | Sterling SDAA 25-100

•NFPA79 machinery electrical standards

•Non-fused electrical disconnect

•Branch fusing

•Mercury process heater contactor

•Regeneration temperature control

•Process high temperature alarm light

•Process/regeneration heater box

•High temperature safety system (Process/Regeneration)

•Dew point monitor with digital read-out

Controller Features

•Mitsubishi programmable relay controller

•Display of process temperature set point and actual settings

2-4 Options

Options marked with “*” indicate options that can be factory installed or retrofitted in the field.

*Process temperature 180ºF to 400˚ F, including aftercooler inside dryer and silicone insulated delivery hose.

*Process temperature 120˚ F to 250˚ F, includes precooler on back of dryer.

*If the dryer is a central dry air generator, it will not have a process heater box.

*Plasticizer trap (with cooling coil) in lieu of optional aftercooler (mounts outside on back of dryer).

*Machine mount adapter to accommodate a dryer and corresponding hopper.

*Drawer magnet, stainless steel construction.

*Casters, two (2) fixed and two (2) swivel.

*Cart with caster with hopper mounting place.

*Redundant high temp safety control.

*Audible alarm

*Insulated air hose for air delivery

2-5 Safety Devices and Interlocks

This section includes information on safety devices and procedures that are inherent to the Dryer. This manual is not intended to supersede or alter safety standards established by the user of this equipment. Instead, the material contained in this section is recommended to supplement these procedures in order to provide a safer working environment.

At the completion of this section, the operator and maintenance personnel will be able to do the following:

Dehumidifying Dryers

Chapter 2: Functional Description

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Sterling SDAA 25-100 specifications Options, Safety Devices and Interlocks, Controller Features

Contents

Sdaa 25-100 15-60 cfm Dehumidifying Dryers Shipping Information Table of Contents Maintenance Service Department Sales Department Contract Department Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Responsibility General Responsibility Operator Responsibility Remember Maintenance Responsibility Reporting a Safety Defect Dehumidifying Dryers Safety General Description Functional DescriptionModels Covered in This Manual Mechanical Features Standard FeaturesWhat is desiccant? Electrical Features Options Safety Devices and InterlocksController Features Fail Safe Operation Safety Circuit StandardsSafety Device Lock-Outs Rigging and Placing the Dryer InstallationUncrating the Equipment Machine-Mount Dryer Dimensions Floor-Mount Dryer Dimensions Suggested Lift Rigging for Cart Mounted Dryers Recommended Dryer Lifting Hardware Electrical Connections Suggested Lift Rigging for Machine Mounted Dryers Checking for Proper Blower Rotation Setup ProceduresThree-Phase Models Making Dryer/Drying Hopper Process Air Connections Optional Aftercooler Installing Water Lines Hose and Hose ClampDrying Hopper Air Trap Considerations Pre-Startup Checks Auto-Tuning the DryerInitial Start-up Starting Up the Dryer Shutting Down the Dryer Operation Start-up Controller Description and Operation SwitchesIndicator Lights Lit when Control Output 2 is on. Not used Process Air Temperature ControllerLit when Control Output 1 is on. The Out1 Identifying Temperature Controller Keys Indicator Name DescriptionLights in the Operation Indicator Section when Setting the Process Air Temperature E5CN Operating Parameters Adjustment Level Indicator Name Description Tuned prior to dryer startup Entering Operating Parameters to Select Modes ON, OFF Optional Setting the High Dew Point AlarmProcess Air Dew Point Display Watlow Operating Parameters Redundant Safety Controller DisplaySetting the Redundant Safety Controller Mode Parameter Setting range Default Manf. setting Dryer Operation Procedures Model Heating Cooling 15 cfm 30 cfm 60 cfm Page Controller Operation With Optional Alarm Horn & Reset Button Page Alarm Display Messages Auto-Tuning the Dryer Shutting Down the Dryer Photocopy this page for your maintenance records MaintenancePreventative Maintenance Schedule Servicing Process Air Filters Preventative MaintenanceRecommendations for Cleaning and Replacing Filters Vacuuming Cleaning with Compressed Air Servicing the Dew Point Monitor Corrective Maintenance Symptoms of Worn Desiccant First AID Replacing Worn Desiccant Consult local disposal regulations for more information Procedures Replacing the Process Heater Introduction TroubleshootingProblem Possible cause Corrective action Problem Possible cause Corrective action Check resin manufacturer’s data Using a Platinum Resistance Thermometer Determining Temperature Controller Errors or Sensor ErrorsUsing a Thermocouple Warranty Restrictions WarrantyWarranty Specifications Appendix Customer Responsibilities Warranty LiabilitiesOptional Components Technical Specifications Annex B Information Drawings and Diagrams Spare Parts List Aftercooler Design Specifications Level 2 & 3 Spare Parts List Electrical & Mechanical Dryer Safety Tags Safety Tag InformationWarranty Returns Returned Material Policy Dryer Identification Serial Number Tag Located on back of Dryer Parts Department Service DepartmentTechnical Assistance Sales Department