Sterling 882.00290.00 Note:

Reset the motor overload and turn the Off-On-Start switch to the START position to

restart the dryer.

7. The valve position limit switch enables the right bed heater and provides an input signal to the

programmable relay when actuated by the cam lobe. Each heater is ON-OFF controlled by the

OMRON E5C2 controller.

8. Upon completion of the HEAT portion of the regeneration sequence, the regen heaters are

disabled by the programmable relay and the COOL time begins.

9. Once the COOL time has expired, the valve motor is turned on until the cam switch makes a

transition. Upon making a transition, the timing sequence is restarted for the new bed.

10. When no fault conditions exist, the display reads “SYSTEM NORMAL”.

11. When a dew point fault is generated by the optional dew point controller, the alarm horn and

light will activate. The alarm light will flash, indicating a non-critical fault. Press Alarm Reset to

deactivate the alarm until the next dew point fault occurs.

12. The top 2 lines of the display show the HEAT and COOL times (in minutes) for the

regeneration sequence. Changes to these times can be made by the operator as follows:

a. Press the up or down arrow until the cursor is positioned at the number to be

changed.

b. Press the “+” key to increment the number, or the “-“ key to decrement the

number.

c. Press the “OK” key to accept the value and write to the relay memory.

OR

d. Press the “ESC” key to cancel the changes.

Note: A change will NOT take effect until step 12-c is done.

13. The dryer is shut off by turning the control power switch to the OFF position.

14. Refer to Schematic drawing A0566087 enclosed in the control enclosure.

Alarm Display Messages

Note: The relay screen which contains the Alarm Display Messages is

located inside the controller enclosure.

WARNING! Do not attempt to check the Alarms on the Controller located within the

unit enclosure unless you are a qualified electrician!

The following is a list of Alarm Display Messages which can be found on the relay screen:

* Turning OFF the dryer clears the Fault/Alarm.

Dehumidifying Dryers Chapter 4: Operation 31 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