Related Manuals for AEC AD Series
Summary of Contents for AEC AD Series
- Page 1 Operation and Installation Manual AD Series Dehumidifying Dryers Important! Read Carefully Before Attempting to Install or Operate Equipment Part No. A0555768 Revision A Bulletin No. WH1-645.1...
- Page 2 Performance figures stated in this manual are based on a standard atmosphere of 59°F (15°C) at 29.92” Hg (1,014 millibars) at sea level, using 60 hz power. Altitude is an important consideration when specifying dehumidifying dryers. AEC can advise you on proper selection and sizing of systems for your operating environment.
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Page 3: Table Of Contents
Rigging and Placing the Dryer................... 25 Making Electrical Connections .................. 28 Checking for Proper Blower Rotation ................ 28 Making Dryer/Drying Hopper Process Air Connections..........29 Drying Hopper Air Trap Considerations ..............29 Installing the Optional Aftercooler ................30 AD Series Dehumidifying Dryers Page 3... - Page 4 12-1 Contact Information for Technical Assistance ............... 70 12-2 Returned Material Policy ....................71 12-3 Warranty ........................72 Safety Tag Information ............. 74 13-1 AD Dryer Safety Tags ....................74 13-2 Dryer Identification (Serial Number) Tag..............75 Page 4 AD Series Dehumidifying Dryers...
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Page 5: Safety Considerations
Safety Considerations AEC AD Series dehumidifying dryers are designed to provide safe and reliable operation when installed and operated within design specifications, following national and local safety codes. To avoid possible personnel injury or equipment damage when installing, operating, or maintaining this equipment, use good judgment and follow these safe practices: Follow all SAFETY CODES. - Page 6 Wood Dale, IL 60191 Phone: 630.595.1060 Fax: 630.595.6641 The equipment is distributed in Europe by our European facility: ACS-EUROPE Daniels Industrial Estate BATH ROAD Stroud, Gloucestershire, England GL5 3TJ Phone: (44) 1453 768980 Fax: (44) 1453 768990 Page 6 AD Series Dehumidifying Dryers...
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Page 7: Annex B Information
An inspection report detailing the functional test is included with the dryer. The machine is not equipped with cableless controls. Color-coded (harmonized) power cord is sufficient for proper installation. AD Series Dehumidifying Dryers Page 7... - Page 8 Charts and Figures Typical Dryer Air Flow Schematic AD Series Machine-Mount Dimensions AD Series Floor-Mount Dimensions Suggested Lift Rigging for AD Dryers (Cart Mount) Suggested Lift Rigging for AD Dryers (Floor Mount) Suggested Lift Rigging for AD Dryers (Machine Mount)
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Page 9: General Information
Moisture removal from hygroscopic (moisture attracting) plastic pellets is an essential step in the manufacture of high-quality plastic products. AEC dehumidifying dryers are used to generate very low dew point air heated to a controlled temperature for drying plastic pellets and regrind. -
Page 10: Standard Features
• Process/regeneration heater box • High temperature safety system (Process/Regeneration) Options Options can tailor your AEC dehumidifying dryer to meet the exact requirements of the drying task being performed. Process temperature up to 400ºF (or below 160ºF), including aftercooler inside dryer and silicone insulated delivery hose. -
Page 11: The Drying System
The Drying System AEC dryers force hot, dry air through the resin in the drying hopper, where the air picks up moisture from the material and is drawn back to the dryer. In the dryer, a desiccant bed strips moisture from the air. The dried process air is then re-heated and delivered back into the drying hopper to regenerate and cool the desiccant. -
Page 12: Ad Series Machine-Mount Dimensions
Figure 2 AD Series Machine-Mount Dimensions Mounting flange Diameter hole: Notes: Hopper mounting flanges on 0.75 and PROCESS DEW POINT and 1.5 cu. ft. (20 & 40 liter) hoppers TEMPERATURE are supplied blank so the customer CONTROL POWER ALARM HORN can drill to match existing machine throat. -
Page 13: What Is Desiccant
This moisture removal process is called regeneration. The Process/Regeneration Cycle AEC AD dryers have two desiccant beds. While one bed is on-line in the process air loop, the other is off-line, being regenerated. AD Series Dehumidifying Dryers... -
Page 14: Specifying A Drying System
Many variables were considered in the selection of your drying system, including type of materials, residence time, throughput of the extruder or injection molding machine. Should your operating environment change, AEC can advise you on necessary equipment and process time and temperature modifications required for your system. -
Page 15: Safety
Obey these specific work rules: Read and follow the instructions in this manual before installing, operating, or maintaining any equipment. Additional copies are available from AEC, Inc. Only qualified persons should work on, or with, this equipment. Work only with approved tools and devices. -
Page 16: Safety Considerations
NOTE: If you believe that your equipment has a defect which could cause injury, you should immediately discontinue its use and inform AEC, Inc., at our address listed in this manual. The principle factors which can result in injury are: Failure to follow proper operating and clean-out procedures, i.e. -
Page 17: General Responsibility
Your employer probably has established a set of safety rules in your workplace. Those rules, this manual, or any other safety information will not keep you from being injured while operating your equipment. AD Series Dehumidifying Dryers Page 17... - Page 18 • NEVER stand or sit where you could slip or stumble into the dryer while working on it. • DO NOT wear loose clothing or jewelry, which can be caught while working on a dryer. In addition, cover or tie back long hair. Page 18 AD Series Dehumidifying Dryers...
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Page 19: Maintenance Responsibility
Install in accordance with national and local codes, which apply. When you have completed the repair or maintenance procedure, check your work, remove your tools, rigging, and handling equipment. AD Series Dehumidifying Dryers Page 19... -
Page 20: Safety
Every effort has been made to incorporate these standards into the design of the AD Dryer; however, it is the responsibility of the personnel operating and maintaining the equipment to familiarize themselves with the safety procedures and the proper use of any safety devices. Page 20 AD Series Dehumidifying Dryers... -
Page 21: Fail Safe Operation
These tags are available at most electrical supply stores. WARNING! Disconnect both of these items to ensure optimum maintenance personnel safety when cleaning or servicing this equipment. AD Series Dehumidifying Dryers Page 21... - Page 22 -Notes- Page 22 AD Series Dehumidifying Dryers...
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Page 23: Shipping Information
Lading is attached to our original invoice. If the shipment was prepaid, write us for a receipted transportation bill. Advise AEC, Inc. regarding your wish for assistance and to obtain an RMA (return material authorization) number. AD Series Dehumidifying Dryers... -
Page 24: If The Shipment Is Not Complete
Notify AEC, Inc. immediately of the shortage. If the Shipment is Not Correct If the shipment is not what you ordered, contact AEC, Inc. immediately. For shipments in the United States and Canada, call 1 (630) 475-7143; for all other countries, call 001 (630) 475-7143. -
Page 25: Installation
4C on the following pages show a suggested safe rigging diagram. It lets you lift the dryer/hopper unit vertically for installation on the machine throat. Adjust chain lengths at the center sling bracket before you lift the unit. Your dryer has built-in lifting lugs. AD Series Dehumidifying Dryers Page 25... -
Page 26: Suggested Lift Rigging For Ad Dryers (Cart Mount)
Dryer and/or injury to personnel! Item Quantity Description Vendor Vendor part no. Adjustable alloy chain sling McMaster-Carr 33665T32 Existing hopper lifting bracket — — Drop forged steel eye nut McMaster-Carr 3019T15 Chain connector McMaster-Carr 3712T23 Page 26 AD Series Dehumidifying Dryers... -
Page 27: Suggested Lift Rigging For Ad Dryers (Floor Mount)
(3) locations/lifting points on the unit! Moving the Dryer without the chains attached to all of the lifting points will cause the unit to become unstable and may cause damage to the Dryer and/or injury to personnel! AD Series Dehumidifying Dryers Page 27... -
Page 28: Making Electrical Connections
This assures that the blower rotates in the proper direction. Note: Holding your hand in front of the air return will also indicate if the blower rotates in the proper direction. Page 28 AD Series Dehumidifying Dryers... -
Page 29: Making Dryer/Drying Hopper Process Air Connections
Drying Hopper Air Trap Considerations AEC’s exclusive air trap assembly on the top of the drying hopper prevents ambient air from contaminating the material being dried. Keep the material level at the mid point of the air trap for the dryer to operate efficiency. -
Page 30: Installing The Optional Aftercooler
• The aftercooler is designed to utilize either tower, chilled or city water as warm as 85ºF (29ºC). Recommended flow rate is three (3 gpm) gallons per minute (11 liters per minute). - Notes - Page 30 AD Series Dehumidifying Dryers... -
Page 31: Controls
This feature works in conjunction with the alarm horn to warn the operator of a high bed safety temperature, a regeneration heater fault, or a blower failure. This warning is reset by pressing the alarm silence button. AD Series Dehumidifying Dryers Page 31... -
Page 32: Typical Control Panel
Figure 6 Typical Control Panel Page 32 AD Series Dehumidifying Dryers... -
Page 33: Process Air Temperature Controller
Process Air Temperature Controller AEC dryers use a microprocessor-based PID temperature controller for maintaining process air temperature. The controller is a modular, self-contained unit you can remove from the mounting housing. All parameters except for the process air set point are factory set and adjusted; normally, no field adjustment to the internal controls is necessary. -
Page 34: Identifying Process Air Temperature Controller Led Indicators
ALARM1 exceeds the set point temperature by more than the alarm deviation value. Alarm output de-energizes the heaters. Heaters re-energize when the temperature falls within the acceptable range. Page 34 AD Series Dehumidifying Dryers... -
Page 35: Identifying Temperature Controller Keys
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. AD Series Dehumidifying Dryers Page 35... -
Page 36: Restoring The E5Cn Temperature Controller To Factory Setup
The E5CN controller has several mode selections. Within each mode are numerous parameters that can be set. The factory at AEC sets 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 the AEC default settings. - Page 37 Use short presses on the Mode Display key to display each parameter within a mode. readout displays the different values for the parameter within a mode. AD Series Dehumidifying Dryers Page 37...
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Page 38: Process Air Dew Point Display
Process Air Dew Point Display Optional The Process Air Dew Point meter indicates the current process air delivery moisture content. Standard AEC dryers use a microprocessor-based controller for displaying dew point air temperature. The controller is a modular, self-contained unit removable from the mounting housing. -
Page 39: Setting The High Dew Point Alarm
If the preset parameters on the controller have been tampered with and it no longer functions properly, call the Service Department at AEC. This controller is not meant to be modified. Note: The dew point alarm monitors and indicates a deviation from the set point. -
Page 40: Redundant Safety Controller Display
Controller to Factory Setup If the preset parameters on the controller have been tampered with and it no longer functions properly, call the Service Department at AEC. This controller is not meant to be modified. Page 40 AD Series Dehumidifying Dryers... - Page 41 WATLOW Operating Parameters The WATLOW controller has only one mode selection; ALARM. The factory at AEC sets the security level to protect the critical parameters from being accidentally changed. Below is an explanation of the modes you will have access to and the AEC default settings.
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Page 42: Setting List For Redundant Safety Controller (Watlow)
Set, Limit 3 High Set, Alarm 3 Low Set, Alarm 3 High Set (0) no lockout, (1) Programming and Setup Page Locked, (2) Limit Lockout Set Points are the only Operation Page parameters accesible, (3) Full Lockout. Page 42 AD Series Dehumidifying Dryers... -
Page 43: Control Operation
The valve will normally complete one full cycle (revolution). 2-3-1 The bed in process at power-down will remain in process. 2-3-2 The bed in regeneration at power-down will remain in regeneration. 2-3-3 The regeneration timing cycle will restart from the beginning. AD Series Dehumidifying Dryers Page 43... - Page 44 The alarm light is activated. The process heater, regen heater, and process/regen blower are turned off. Reset the motor overload and turn the Off-On-Start switch to the START position to deactivate the alarm light and restart the dryer. Page 44 AD Series Dehumidifying Dryers...
- Page 45 ***Note that a change will NOT take effect until step 12-3 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. AD Series Dehumidifying Dryers Page 45...
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Page 46: Controller Operation
3.) Once the control power is on and no fault conditions exist, turning the Off-On-Start switch to the START position will start the dryer as follows: 3-1. The process heater is turned on and controlled by the E5CN controller. Page 46 AD Series Dehumidifying Dryers... - Page 47 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”. AD Series Dehumidifying Dryers Page 47...
- Page 48 ***Note that a change will NOT take effect until step 12-3 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. Page 48 AD Series Dehumidifying Dryers...
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Page 49: Alarm Display Messages
Regen Heater Temp Switch and/or HIGH TEMP Process Heater Temp Switch and/or Redundant Temp Safety PROC BLWR Blower Overload Valve Motor Time-Out VALVE MTR PROC BLWR HIGH TEMP Multiple Alarms VALVE MTR HEAT COOL No Alarms SYSTEM NORMAL AD Series Dehumidifying Dryers Page 49... - Page 50 -Notes- Page 50 AD Series Dehumidifying Dryers...
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Page 51: Startup, Shutdown, And Operation
ON/OFF convey timer for the proper conveying time. Note: To allow proper residence time during continuous processing, maintain the material level in the hopper at the midpoint of the air trap assembly. AD Series Dehumidifying Dryers Page 51... -
Page 52: Shutting Down The Dryer
ON/OFF Turn the system switch to ON/OFF If needed, empty the drying hopper. For maintenance or a long term shutdown, open (de-energize) the electrical disconnects at the dryer and at the power drop. Page 52 AD Series Dehumidifying Dryers... -
Page 53: Maintenance
Keep these operating instructions on hand and follow them when installing, operating, or maintaining your dryer. If the instructions become damaged or unreadable, you can obtain additional copies from AEC. Only qualified personnel familiar with this equipment should work on or with this unit. -
Page 54: Air Filter Location & Disassembly
Blow clean, dry compressed air up and down the pleats, blowing out the filter from the inside out. Remove loose dirt from the filter with compressed air or vaccum from the outside. Important! DO NOT clean/wash filter with water! Page 54 AD Series Dehumidifying Dryers... -
Page 55: Servicing The Dew Point Monitor
Symptoms of Worn Desiccant The moisture absorption capacity of the desiccant used in your AEC dryer degrades after an indefinite period of time. Useful life depends on variables such as material moisture content, plasticizer vapors in the return air, and number of regeneration cycles. -
Page 56: Replacing Worn Desiccant
Your AEC dryer may need new desiccant if it exhibits any of the following symptoms: • The process air dew point measured with a portable dew point monitor is higher than -10°F (-23ºC) throughout the process drying cycle. • Noticeable amounts of desiccant in the beds is a medium- brown color or darker. -
Page 57: Desiccant Bed Location & Disassembly
1" Wide x 1/8" Thick High Temperature Gasket Important! You should properly dispose of any discarded desiccant. Consult local disposal regulations for more information. Inspect each lower desiccant screen for tears or holes where desiccant burned-through. Replace as needed. AD Series Dehumidifying Dryers Page 57... -
Page 58: Replacing The Process Heater
27.5 12.5 Replacing the Process Heater The AD Series dehumidifying dryers utilize a single-phase Calrod-type heater element. This heater element is mounted in the center compartment below the desiccant beds. Although the replacement procedure is the same for each heater, the wattage varies by model, voltage, temperature range, etc. -
Page 59: Process Heater Location & Disassembly
Install new heater gaskets and securely tighten all fasteners. CAUTION! Heater loops should not touch each other. “Hot spots” lead to premature heater failure! Reinstall the wires based on the sketch you made earlier. AD Series Dehumidifying Dryers Page 59... -
Page 60: Replacing/Cleaning The Regeneration Heater/Cooling Coils
Disconnect the wiring for the heater being removed or replaced. Remove the Cooler/Filter housing by undoing the bolts holding it in place. Once the fastners are undone, take out the housing. Page 60 AD Series Dehumidifying Dryers... - Page 61 Heater loops should not touch each other. “Hot spots” lead to premature heater failure! Re-install the wiring based on the sketch you made earlier. Secure the heater access cover on the side of the dryer. - Notes - AD Series Dehumidifying Dryers Page 61...
- Page 62 Scheduled Actual replacement Scheduled Actual replacement Every two years replacement date Date/Work done by replacement date Date/Work done by Replace desiccant. - Photocopy this page for your maintenance records - Page 62 AD Series Dehumidifying Dryers...
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Page 63: Troubleshooting
Different materials capacity. material specified at the time of may need a longer residence purchase. time or a different drying temperature. Break in flex hose to/from drying Inspect for air leaks; replace as hopper. needed. AD Series Dehumidifying Dryers Page 63... - Page 64 Repair or replace. Contaminated or worn out Replace. desiccant. Poor dew point performance. Leaking process air hoses. Repair or replace. Dryer operates beyond its Check dryer and drying hopper capacity. sizing. Bad dew point sensor. Replace. Page 64 AD Series Dehumidifying Dryers...
- Page 65 Fahrenheit or vice versa. • OFF - ºC Process value shifted because Set input shift value to 0, or set the input shift function is used. mode selector switch 4 to OFF. AD Series Dehumidifying Dryers Page 65...
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Page 66: Determining Temperature Controller Errors Or Sensor Errors
, the controller is normal and the sensor is probably broken, –B short-circuited, or incorrectly wired. Other service problems or questions can be answered by contacting the AEC Service Department. Page 66 AD Series Dehumidifying Dryers... -
Page 67: Dryer Options
The following is a list of options, which your Dryer may have been equipped with: • Dew Point Monitor • Audible Alarm with Silence Button • High Temperature Option (with Aftercooler) • Casters • AP1 PLC Control System AD Series Dehumidifying Dryers Page 67... -
Page 68: Spare Parts
Spare Parts 11-1 Spare Parts List AD Series Dehumidifying Dryers Figure 17 Level 1 Spare Parts List (Electrical & Mechanical) MINI DRYER SPARE PARTS LIST AD15, AD30, AD60 LEVEL 1 ( Electrical Components ) PART # SIZE Description A0568932 Fuse for the Heater Elements... -
Page 69: Level 2 & 3 Spare Parts List (Electrical & Mechanical)
Return Air Cooling Coil A0536628 208/460 Volt Process Blower. A0536629 575 Volt Process Blower A0534079 208/460 Volt Process Blower. A0535351 575 Volt Process Blower A0552439 208/460 Volt Process Blower. A0552440 575 Volt Process Blower AD Series Dehumidifying Dryers Page 69... -
Page 70: Technical Assistance
Contract Department Call [ 630 ] 595-1060 Monday–Friday, 8am–5pm CST Let AEC install your system. The Contract Department offers any or all of these services: project planning; system packages including drawings; equipment, labor, and construction materials; and union or non-union installations. -
Page 71: Returned Material Policy
12-2 Returned Material Policy 12-2-1 Credit Returns Prior to the return of any material authorization must be given by AEC, INC. A RMA number will be assigned for the equipment to be returned. Reason for requesting the return must be given. -
Page 72: Warranty
12-3 Warranty AEC, Inc. warrants all equipment manufactured by it to be free from defects in workmanship and material when used under recommended conditions. The Company’s obligation is limited to repair or replace FOB the factory any parts that are returned prepaid within one year of equipment shipment to the original purchaser, and which, in the Company’s opinion, are defective. - Page 73 -Notes- AD Series Dehumidifying Dryers Page 73...
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Page 74: Safety Tag Information
Safety Tag Information 13-1 AD Dryer Safety Tags Hot! Read Operation and Installation Manual High Voltage Earth Ground Inside Enclosure Protected Earth Lifting Point Ground Page 74 AD Series Dehumidifying Dryers... -
Page 75: Dryer Identification (Serial Number) Tag
Date of Manufacture 06/2003 4.5A Over-current Protection Device (s) 4.5A Total Frequency 50/60Hz Compressed air supply None Dryer Mass 400 lbs/(180 KG) Electrical Diagrams & Pneumatic Diagram 801 AEC Drive Wood Dale, Illinois USA (630) 595-1060 AD Series Dehumidifying Dryers Page 75... -
Page 76: Service Notes
Service Notes Page 76 AD Series Dehumidifying Dryers... - Page 77 Service Notes AD Series Dehumidifying Dryers Page 77...
- Page 78 Service Notes Page 78 AD Series Dehumidifying Dryers...
- Page 79 Warranty AEC, Inc. warrants all equipment manufactured by it to be free from defects in workmanship and material when used under recommended conditions. The Company’s obligation is limited to repair or replace FOB the factory any parts that are returned prepaid within one year of equipment shipment to the original purchaser, and which, in the Company’s opinion, are defective.
- Page 80 801 AEC Drive • Wood Dale, IL 60191-1198 USA (630) 595-1060 • Fax (630) 595-6641 http://www.aecinternet.com...