Sterling 882.00294.00, DH1-610-2 - page 28

Enter the values you would like to set in the screen by pressing the number keys. Press ENT

(Enter) when you are finished to set the new values or CLR (Clear) to erase the current

values and reenter new ones.

The next feature in the DRYER MENU is the ALARMS button/screen.

Alarms (Retains 100 of the most recent alarms)

This screen allows the operator to review the number and type of issues that the Dryer has

encountered during its operation. The “Alarm History” screen is NOT reset-able.

Problems can be viewed by Date, Hour, and Comment.

Because of the size of the screen, only three (3) comments/alarms can be viewed at a time.

To view alarms not visible on the screen, press the DOWN button. To return to a particular

alarm, press the UP button to scroll upward in the alarm history.

Pressing CNV (Convey) in this screen will take the operator to the CONVEY STATUS of

the system. You will only get CNV alarms when conveying options are enabled (Nomad

only).

At this point the operator can return back to the DRYER MENU or MAIN MENU by

touching the appropriate button on the screen.

Auto Tune

This screen allows the operator to automatically tune the process air temperature control

algorithm to a specific drying application. The autotune sequence should be initiated if the

user feels there are unacceptable fluctuations in the process air temperature. The calculated

P, I, and D variables will be shown in the lower left hand portion of the screen for reference

purposes.

The autotune feature can be enabled by pressing the PUSH TO START PROCESS

AUTOTUNE button.

AUTOTUNE IN PROGRESS or PROCESS NOT ACTIVE will inform the operator of

the current status of this feature.

At this point the operator can return back to the DRYER MENU or MAIN MENU by

touching the appropriate button on the screen.

Portable Drying/Conveying Systems Chapter 4: Operation 28 of 63

Contents

Main SDAA 25-100 Small Dryer With AP-1 Controls Shipping Information Table of Contents CHAPTER 1: SAFETY ................................................................6 CHAPTER 2: FUNCTIONAL DESCRIPTION............................ 11 CHAPTER 3: INSTALLATION ..................................................15 CHAPTER 4: OPERATION .......................................................21 CHAPTER 5: MAINTENANCE.................................................. 40 CHAPTER 6: TROUBLESHOOTING........................................ 48 CHAPTER 7: APPENDIX ..........................................................55 Chapter 1: Safety 1-1 How to Use This Manual DANGER! 1-2 Safety Tag Information 1-3 Warnings and Precautions 1-4 Responsibility Page Page Chapter 2: Functional Description 2-1 Models Covered in This Manual 2-2 General Description 2-3 Standard Features 2-4 Options 2-5 Safety Devices and Interlocks Page Chapter 3: Installation 3-1 Uncrating the Equipment 3-2 Rigging and Placing the Dryer Note: Floor Mounted Dryers can be lifted by hoist or fork lift. USE FORK LIFT TRUCK USE Overhead Crane 3-3 Electrical Connections 3-4 Setup Procedures Checking for Proper Blower Rotation Drying Hopper Air Trap Considerations (If Equipped) Installing the Optional Aftercooler 3-5 Initial Start-up Pre-Startup Checks Starting Up the Dryer The process blower starts. Auto-Tuning the Dryer (Requires Supervisory Password) Page Chapter 4: Operation 4-1 Controller Description and Operation Page Page Page Page Page Page Page Page Page Page Page Page Page Page Restoring the WATLOW Redundant Safety Controller to Factory Setup Entering Operating Parameters to Select Modes Figure 6: Setting List for Redundant Safety Controller (WATLOW), Part No. A0568961 4-2 System Operation Procedures process. regeneration. beginning. 4-3 Shutting Down the Dryer Chapter 5: Maintenance 5-1 Preventative Maintenance Schedule Portable Drying/Conveying Systems Chapter 5: Maintenance 40 of 63 replacement date inspection 5-2 Preventative Maintenance Servicing Process Air Filters Recommendations for Cleaning and Replacing Filters Figure7: Air Filter Location and Disassembly Vacuuming Cleaning with Compressed Air Servicing the Dew Point Monitor 5-3 Corrective Maintenance Symptoms of Worn Desiccant + FIRST AID + In case of eye contact, immediately flush eyes with plenty of water for at least 15 minutes. SEE A PHYSICIAN IMMEDIATELY IF IRRITATION PERSISTS. Replacing Worn Desiccant Figure 8: Desiccant Bed Location and Disassembly Figure 9: Required Desiccant Amounts Replacing the regeneration heaters Procedures (see figure 8). Replacing the Process Heater Figure 10: Process Heater Location and Disassembly Procedures Replacing/Cleaning the Cooling Coils Figure 11: Cooling Coil Location and Disassembly Page Chapter 6: Troubleshooting 6-1 Introduction Page Page Page Page Page 6-2 Determining Temperature Controller Errors or Sensor Errors Using a Thermocouple Chapter 7: Appendix 7-1 Warranty Warranty Specifications Warranty Restrictions Warranty Liabilities 7-2 Optional Components 7-3 Technical Specifications Annex B Information Aftercooler Design Specifications Portable Drying/Conveying Systems Chapter 7: Appendix 57 of 63 7-4 Drawings and Diagrams Figure 12: Standard Model (180F to 250F) Air Flow Schematic Page Figure 14: Low Heat Model (120F to 250F) Air Flow Schematic 7-5 Spare Parts List Figure 15: Level 1 Spare Parts List (Electrical & Mechanical) Portable Drying/Conveying Systems Chapter 7: Appendix 60 of 63 Page 7-6 Returned Material Policy 7-7 Dryer Identification (Serial Number) Tag 7-8 Technical Assistance Portable Drying/Conveying Systems Chapter 7: Appendix 63 of 63 Parts Department Service Department Sales Department