Sterling 882.00294.00, DH1-610-2 3-5 Initial Start-up

NOTE: If the Aftercooler is used as a plasticizer trap, the water temperature of 50°F or lower

is recommended.

3-5 Initial Start-up

Pre-Startup Checks

; Check the process and return hoses for tight connections.

; Check all companion equipment, such as the drying hopper; verify that the loading

system is ready for operation.

; Verify that all dryer electrical connections are tight.

; Verify that the thermocouple is properly installed at the hopper inlet.

Starting Up the Dryer

1. Turn on (energize) the disconnect switch in your power drop, then turn on the

disconnect switch on the dryer.

2. Turn the system ON/OFF switch to ON to energize the display panel.

3. Check the display for the proper temperature scale (ºF or ºC).

4. Close the slide gate at the bottom of the drying hopper.

Make sure that the blowers turn in the right direction.

5. Fill the drying hopper with material.

6. Press the START button on the Touch Screen to start the dryer.

The process blower starts.

7. If your dryer has a water-cooled aftercooler, make sure that sufficient cooling water

(3gpm at 85°F or lower) flows properly through the coil and that you have bled any

trapped air from the system.

8. Set the process set point on the touch screen.

9. After the proper pre-drying time for the initial hopper fill has elapsed, fully open the

drying hopper slide gate.

Note: To allow proper residence time during continuous

processing, maintain the material level in the hopper at the

midpoint of the air trap assembly.

Auto-Tuning the Dryer (Requires Supervisory Password)

From the “Dryer Status” screen, press “D-Menu” and select Auto Tune to gain access to this

screen.

Portable Drying/Conveying Systems Chapter 3: Installation 19 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