Sterling 882.00290.00

Setting the Process Air Temperature

When setting the process air temperature, consult with the resin manufacture for the

recommended drying temperature.

To change the process air temperature set point with the dryer running:

• Press to raise the set point to the temperature you want.

• Press to lower the set point to the temperature you want.

Restoring the Process Air Temperature Controller (E5CN) to Factory Settings

If the preset parameters on the controller have been tampered with and it no longer properly

controls temperature and displays dew point, you can restore the controllers to the factory

setup. Call the Service Department for detailed instructions.

E5CN Operating Parameters

The E5CN controller has several mode selections. Within each mode are numerous

parameters that can be set.

The factory has set the security level to protect the critical parameters from being accidentally

changed. Below is an explanation of the operating modes you will have access to and on the

following page are the manufacturers’ default settings.

Available E5CN Modes

Operation Level

Indicator Name Description

Run/Stop Mode

(r-S) When “RUN” is selected, the control is running.

When “STOP” is selected, the control is stopped.

When the control is stopped, the STOP display

lights. The default is set to “RUN.”

Alarm Value 1

Mode (AL-1)

35°F or 10°C

This setting is used to indicate how many degrees

the process temperature will be allowed to exceed

the set point temperature. An alarm output will

turn off the dryer.

Dehumidifying Dryers Chapter 4: Operation 22 of 53

Contents

Main 15, 30, and 60 CFM Dryers With AP-0 Controls Shipping Information Table of Contents CHAPTER 1: SAFETY................................................................ 5 CHAPTER 2: FUNCTIONAL DESCRIPTION........................... 10 CHAPTER 3: INSTALLATION..................................................14 CHAPTER 4: OPERATION.......................................................19 CHAPTER 5: MAINTENANCE ................................................. 35 CHAPTER 6: TROUBLESHOOTING ....................................... 42 CHAPTER 7: APPENDIX..........................................................45 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 Note: 3-2 Rigging and Placing the Dryer Note: 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 Chapter 4: Operation 4-1 Start-up The process blower starts. 4-2 Controller Description and Operation Page 8.8.8.8 8.8.8.8 Identifying Temperature Controller Keys Setting the Process Air Temperature Restoring the Process Air Temperature Controller (E5CN) Adjustment Level Note: Entering Operating Parameters to Select Modes The SV readout displays the different values for the parameter within a mode. The PV readout will display the different parameters within each mode. The SV readout displays the different values for the parameter within a mode. Figure 6: Settings for Process Temperature Controller (E5CN), Part No. A0567917 Process Air Dew Point Display Figure 7: Typical Dew Point Display Monitor; Part Number A0555757 AT Note: Setting the High Dew Point Alarm Restoring the Process Air Dew Point Meter (E5CK) to Factory Setup Redundant Safety Controller Display Optional Figure 8: Typical Redundant Safety Controller Display; Part No. A0568961 WATLOW Operating Parameters Entering Operating Parameters to Select Modes Figure 9: Setting List for Redundant Safety Controller (WATLOW), Part No. A0568961 4-3 System Operation Procedures Controller Operation (Without Optional Alarm Horn & Reset Button) Note: Page OMRON E5C2 Note: Alarm Display Messages 4-4 Auto-Tuning the Dryer HIGH TEMP PROC BLWR VALVE MTR Page Chapter 5: Maintenance 5-1 Preventative Maintenance Schedule replacement date inspection System model # 5-2 Preventative Maintenance Servicing Process Air Filters Recommendations for Cleaning and Replacing Filters Figure 10: 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 11: Desiccant Bed Location and Disassembly Page Figure 13: Process Heater Location and Disassembly Procedures Replacing/Cleaning the Cooling Coils Figure 14: Cooling Coil Location and Disassembly 6 Troubleshooting 6-1 Introduction HIGH TEMP PROC BLWR Dehumidifying Dryers 6Troubleshooting 43 of 53 VALVE MTR 6-2 Determining Temperature Controller Errors or Sensor Errors Using a Thermocouple 7 Appendix 7-1 Warranty Warranty Liabilities Customer Responsibilities 7-2 Technical Specifications Annex B Information Aftercooler Design Specifications Entering water temp. F C 85F 50F (If used as Plasticizer trap) 29C 7-3 Drawings and Diagrams Figure 15: Standard Model (180F to 250F) Air Flow Schematic Figure 16: High Heat Model (180F to 400F) Air Flow Schematic Figure 17: Low Heat Model (120F to 250F) Air Flow Schematic 7-4 Spare Parts List Figure 18: Level 1 Spare Parts List (Electrical & Mechanical) Dehumidifying Dryers 7Appendix 50 of 53 Page 7-5 Returned Material Policy Credit Returns 7-6 Dryer Identification (Serial Number) Tag 7-7 Technical Assistance Parts Department Service Department Sales Department Contract Department