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15, 30, & 60 cfm
Compact Dehumidifying Dryers
Part Number: 882.00291.00
Bulletin Number: DH1-635.3
Effective: 08-23-07
Write Down Your Serial Numbers Here For Future Reference:
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We are committed to a continuing program of product improvement.
Specifications, appearance, an
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Shipping Information Unpacking and Inspection You should inspect your dryer for possible shipping damage. Thoroughly check the equipment for any damage that might have occurred in transit, such as broken or loose wiring and components, loose hardware and mounting screws, etc. In the Event of Shipping Damage According to the contract terms and conditions of the Carrier, the responsibility of the Shipper ends at the time and place of shipment. Notify the transportation company’s local agen
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Table of Contents CHAPTER 1: SAFETY................................................................ 5 1-1 How to Use This Manual .............................................................................................5 Safety Symbols Used in this Manual .....................................................................................5 1-2 Safety Tag Information ...................................................................................................6 Dryer Safety Tags...
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Identifying Control Panel Indicator Lights and Switches for the Standard Controller ..........20 Process Air Temperature Controller ....................................................................................21 Setting the Process Air Temperature...................................................................................23 Restoring the Process Air Temperature Controller (E5CN) to Factory Settings..................23 Process Air Dew Point Display ..............................
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Chapter 1: Safety 1-1 How to Use This Manual Use this manual as a guide and reference for installing, operating, and maintaining your drying system. The purpose is to assist you in applying efficient, proven techniques that enhance equipment productivity. This manual covers only light corrective maintenance. No other maintenance should be undertaken without first contacting a service engineer. The Functional Description section outlines models covered, standard features, and safety feat
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1-2 Safety Tag Information Dryer Safety Tags Hot! Read Operation and Installation Manual High Voltage Earth Ground Inside Enclosure PE Protected Earth Lifting Point Ground 1-3 Warnings and Precautions Our equipment is designed to provide safe and reliable operation when installed and operated within design specifications, following national and local safety codes. This may include, but is not limited to OSHA, NEC, CSA, SPI
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When welding or brazing in or around this equipment, make sure VENTILATION is ADEQUATE. PROTECT adjacent materials from flame or sparks by shielding with sheet metal. An approved FIRE EXTINGUISHER should be close at hand and ready for use if needed. Do not restore power until you remove all tools, test equipment, etc., and the equipment and related components are fully reassembled. Only PROPERLY TRAINED personnel familiar with the information in this manual should work on this equipmen
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The operator’s responsibility does not end with efficient production. The operator usually has the most daily contact with the equipment and intimately knows its capabilities and limitations. Plant and personnel safety is sometimes forgotten in the desire to meet incentive rates, or through a casual attitude toward machinery formed over a period of months or years. Your employer probably has established a set of safety rules in your workplace. Those rules, this manual, or any other safety
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• Shut off power to the dryer when it is not in use. Turn the switch to the OFF position, or unplug it from the power source. Maintenance Responsibility Proper maintenance is essential to safety. If you are a maintenance worker, you must make safety a priority to effectively repair and maintain equipment. Before removing, adjusting, or replacing parts on a machine, remember to turn off all electric supplies and all accessory equipment at the machine, and disconnect and lockout electrical
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Chapter 2: Functional Description 2-1 Models Covered in This Manual This manual provides operation, installation, and maintenance instructions for 15, 30 and 60 cfm dehumidifying dryers. Model numbers are listed on the serial tag. Make sure you know the model and serial number of your equipment before contacting the manufacturer for parts or service. Our dehumidifying mini dryers are designed to generate heated dehumidified air (at a very low dew point) at carefully controlled temperatur
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Figure 1: Typical Dryer Air Flow Schematic Regeneration Moisture Make Up Exhaust Filter High Pressure Peripheral Drying Hopper Thermocouple location 2-3 Standard Features Mechanical Features • Dual desiccant beds • Electrically-actuated air valve • 13X Molecular Sieve • Single regenerative process blower • Drying temperature range of 180ºF to 230ºF (82ºC to 110ºC). • 2.5” hose connections Electrical Features • Process thermocouple to be connected to drying hopper air i
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• Mercury process heater contactor • Process high temperature alarm light • Process/regeneration heater box • High temperature safety system (Process/Regeneration) Controller Features • Mitsubishi programmable relay controller • Display of process temperature set point and actual settings 2-4 Options Options marked with “*” indicate options that can be factory installed or retrofitted in the field. • * Process temperature up to 400ºF (204º C) or below 180ºF (82ºC), including aftercool
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Safety Circuit Standards Safety circuits used in industrial systems protect the operator and maintenance personnel from dangerous energy. They also provide a means of locking out or isolating the energy for servicing equipment. Various agencies have contributed to the establishment of safety standards that apply to the design and manufacture of automated equipment. The Occupational Safety and Health Administration (OSHA) and the Joint Industrial council (JIC) are just a few of the organiz
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Chapter 3: Installation 3-1 Uncrating the Equipment Dehumidifying Dryers are shipped mounted on a skid, enclosed in a plastic wrapper, and contained in a cardboard box. 1. Pry the crating away from the skid. Note: Remove the nails holding the box to the skid and lift the box off carefully; avoiding staples in the 1’ x 4’ wood supports. Cut the steel banding. 2. Use a pry bar to remove the blocks securing the unit to the skid. 3. Lift unit from sides. Use a pry bar if necessary to care
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Figure 2: Suggested Lift Rigging for Cart Mount Dryers Caution! Do not use a hoist to move or rig your Drying/Conveying System when it is mounted on a cart! Moving the unit with a hoist will cause it to become unstable and may cause damage to the equipment and/or injury to personnel! Figure 3: Suggested Lift Rigging for Floor Mounted Dryers PROCESS DEW POINT CONTROL TEMPERATURE POWER ON PROCESS TEMPERATURE DEW POINT CONTROL ON ON
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Figure 4: Suggested Lift Rigging for Machine Mounted Dryers Mounting flange E PROCESS DEW POINT CONT E TEMPERATUR ON ROL E POWE R ON POWER ON ALAR M OFF Diameter hole: F Notes: Hopper mounting flanges on 0.75 and and 1.5 cu. ft. (20 & 40 liter) hoppers are supplied blank so the customer can drill to match existing machine throat. 3.0 cu. ft. (80 liter) hoppers and larger are not supplied with a cast flange (as sho
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3-4 Setup Procedures This section provides the procedures necessary for configuring your Dehumidifying Dryer. Configuration of your dryer includes checking for proper blower rotation, making dryer/drying hopper process air connections and the optional aftercooler (on 15 and 30 cfm models). We recommend that you carry out these procedures in the order given here. Note: Before carrying out these procedures, install all equipment as described in this section. Checking for Proper Blower Rot
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Drying Hopper Air Trap Considerations Our exclusive air trap assembly on the top of the drying hopper prevents ambient air from contaminating the material being dried. To ensure that your unit will operate at peak efficiency, do the following: • Keep the material level at the mid point of the air trap This can be achieved by utilizing a hopper loader or vacuum conveying system to supply material to the drying system. Optional Aftercooler Water-cooled 15 and 30 cfm models use a water-to-
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trapped air from the system. Make sure the aftercooler has the proper supply water temperature. 6. Set the process set point on the temperature controller. 7. 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 1. For Auto-tuning, press the Level Key once
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Chapter 4: Operation 4-1 Controller Description and Operation Identifying Control Panel Indicator Lights and Switches for the Standard Controller Switches Main Power. This switch allows the dryer to receive power from the main power supply (3 phase only). Dryer Control ON/OFF Switch. This switch energizes or de-energizes control power to the indicator panel and starts the dryer. (The controller cannot be energized without the dryer running.) Indicator Lights Alarm Light. This feat
