MODEL VMF-15 AND VMF-18

Transcription

1 MODEL VMF-15 AND VMF-18 VMF Series Volumetric Screw Feeder OPERATING AND MAINTENANCE MANUAL

2 0 TABLE OF CONTENTS LEGAL NOTES: NOTICES AND WARNINGS 1 INTRODUCTION: WELCOME TO SCALETRON 2 I. SECTION ONE: SAFETY OVERVIEW A. ELECTRICAL HAZARDS 3 B. OPERATING HAZARDS 3 C. SAFETY 3 D. CONTACT INFORMATION 4 II. III. IV. SECTION TWO: MODEL AND OPERATIONAL OVERVIEW A. VMF SERIES OF VOLUMETRIC SCREW FEEDERS 5 B. MODEL VMF-15 AND VMF-18 BASIC OVERVIEW 5 C. STANDARD MODEL SPECIFICATIONS TABLE 6 D. AUGER SIZING AND FEED RATE INFORMATION 7 SECTION THREE: COMPONENTS DESCRIPTION A. DRIVE UNIT 8 B. FEED SYSTEM 8 C. ELECTRONIC FEED CONTROL UNIT 8 D. OPTIONAL VIBRATION SYSTEM 8 E. ADDITIONAL ACCESSORIES AND COMPONENTS 9 SECTION FOUR: SETUP PROCEDURES A. UNPACKING THE FEEEDER 10 B. CHOOSING A LOCATION 11 C. MOUNTING THE FEEDER 11 D. MOUNTING THE SCR CONTROL BOX 12 E. MOUNTING THE HOPPER 12 F. CONNECTING THE POWER 12 G. INITIAL START UP OPERATIONS 13 H. ADJUSTING THE CURRENT SET POINTS 15 I. ADJUSTING THE VIBRATORY AGITATION CYCLE 15

3 0 TABLE OF CONTENTS (CONT.) V. SECTION FIVE: MAINTENANCE A. RECOMMENDED PROCEDURES 16 B. IF MAINTENANCE IS REQUIRED 17 VI. SECTION SIX: APPENDIX A. FIGURE 1: OVERALL DIMESIONS 20 B. FIGURE 2: MAJOR COMPONENTS 21 C. FIGURE 3: CUTAWAY VIEW 22 D. FIGURE 4: AUGER ASSEMBLY 23 E. FIGURE 5: VIBRATION MOUNT ASSEMBLY 24 VII. SECTION SEVEN: TROUBLE SHOOTING 25 VIII. SECTION EIGHT: FACTORY CALIBRATION SETTINGS 27 IX. SECTION NINE: PARTS LIST AND ORDER FORM 28 X. SECTION TEN: CUSTOMER NOTES 29

4 1 LEGAL NOTES: NOTICES AND WARNINGS DISCLAIMER NOTICE: All technical data, drawings, and written information provided in this operational manual is proprietary information owned by Scaletron Industries Ltd. The provided information is to be utilized only by the owner, operator, or maintainer of equipment purchased from Scaletron Industries Ltd. Disclosing, copying, and/or reproduction of any or all the material enclosed in this operational manual for purposes not related to Scaletron Industries Ltd. equipment is directly violating company interests and/or patents owned by Scaletron Industries Ltd. and therefore strictly prohibited. WARNING!! Failure to follow recommended safety, operating and maintenance procedures could result in personal injury and/or damage to property. Ensure all operators, installation technicians and maintenance technicians have fully read and thoroughly understand the information provided in this operational and maintenance manual. NOTE: Scaletron Industries reserves the right to make or edit part numbers and part designs as needed. In rare occasions, these changes may not be immediately noted in documentation publications, such as, Operating and Maintenance manuals. Because of the possibility of changes in documentation it is advised to always include your product serial number when engaging in correspondence with Scaletron Industries Ltd. This will allow Scaletron to efficiently process your concerns or requests as quickly as possible

5 2 INTRODUCTION: WELCOME TO SCALETRON! Congratulations on the purchase of your new VMF Series volumetric screw feeder from Scaletron Industries, Ltd. For over 30 years the American based company, Scaletron Industries has been designing and manufacturing equipment that is required to operate in the harsh corrosive environments of the water treatment industries. Since 1983 Scaletron has been meeting and exceeding the operational specifications required by the water treatment industry by offering a full line of top quality products. Whether municipal drinking facilities, waste water facilities, or even industrial water and waste treatment, Scaletron s monitoring and measurement equipment has made them an industry leader when it comes to corrosion resistance, product design and customer service. Scaletron has expanded their line of already superior products with the addition of their new VMF Series volumetric screw feeders and accessories. The new VMF Series product line will allow Scaletron to offer the dry powder feeder market the same high quality manufacturing, excellent technical knowledge and efficient customer service as they do with their other products. This is just one more way Scaletron Industries proudly strives to meet and exceed all their customers requests and expectations. We sincerely appreciate your business and hope you enjoy your new VMF Series volumetric screw feeder.

6 3 I. SECTION ONE: SAFETY OVERVIEW A. ELECTRICAL HAZARDS The VMF-15 and VMF-18 are electrically driven and controlled volumetric feeders. There is always a risk of electrical damage to equipment and/or personnel if proper and current electrical guidelines and codes are not followed when installing and operating this equipment. B. OPERATING HAZARDS C. SAFETY There are mechanically driven components on both the VMF-15 and VMF-18 that feed possibly harmful chemicals automatically. To avoid potential personal injury the adherence to the following guidelines is mandatory. DO NOT operate volumetric feeder with lid removed or auger assembly exposed! DO NOT operate volumetric feeder with electrical enclosures open or unsecured! IMMEDIATELY deal with any spills or leakage of chemicals per the applicable MSDS! To ensure continued safe operating procedures follow the guidelines below: Ensure the operator and or service technician has fully read and understands the volumetric feeder Operating and Maintenance Manual. Follow established workplace safety precautions and procedures. Understand proper handling and safety precautions of chemicals being utilized by volumetric feeder. Make sure all name plates, placards, labels, and tags are properly attached and legible. Use only factory approved replacement parts when servicing volumetric feeder. Always check with Scaletron Industries when attempting to operate volumetric feeder outside of designed spectrum of specifications. Establish and maintain a scheduled maintenance routine for the volumetric feeder.

7 4 I. SECTION ONE: SAFETY OVERVIEW (CONTINUED) D. CONTACT INFORMATION IMPORTANT: Do not discard this Operating and Maintenance Manual upon completion of installation, information provided in this text is essential to proper and safe operation and maintenance of the VMF series volumetric screw feeders. Additional or replacement copies of this publication can be obtained by contacting: Scaletron Industries Ltd. Bedminster Industrial Park 53 Apple Tree Lane P.O. Box 365 Plumsteadville, PA USA Toll Free: (USA and Canada) Phone: (+1) Fax: (+1)

8 5 II. SECTION TWO: MODEL AND OPERATIONAL OVERVIEW A. VMF SERIES OF VOLUMETRIC SCREW FEEDERS Scaletron s VMF series includes two sizes of volumetric screw feeders one is the VMF-15 which is the smallest volumetric feeder offered and the other is the VMF-18 which is slightly larger than the VMF-15. Below is a brief list of what the VMF series offers. 304 Stainless steel built in gravity fed hopper. Corrosion resistant powder coated steel frame. Integrated vibration mounts. Optional independently controlled vibratory agitator 304 Stainless steel concentric helical overwind auger. 304 Stainless steel, 0.75 to 2.5 diameter solid auger or 1.5 to 2.5 diameter open helix. (Custom size augers are available upon request) Water and dust proof variable speed control capable of remote operation.. 90 VDC parallel shaft, wash down gear motor. Optional integrated Loss in Weight measurement system. Expandable accessories and configurations to meet customer s specific needs. B. MODEL VMF-15 AND VMF-18 BASIC OVERVIEW The volumetric screw feeders VMF-15 and VMF-18 from Scaletron Industries Ltd. are automatic metering screw feeders that dispense powdered, pelletized, or similar material into a secondary process dictated by the customer. The basic operation of both the VMF-15 and VMF-18 is the same. The following is a brief step by step description of how the volumetric feeder operates. STEP 1) The material or chemical that is to be fed at a certain measured rate is first dispensed into the hopper. The hopper relies on gravity and/or an optional agitation attachment (see Figure 2) to move the material to the bottom of the hopper. STEP 2) The material or chemical is dispensed via a horizontally rotating solid auger or open helix (see Figure 3) which is connected to a parallel shaft gearmotor. The gearmotor s speed is electronically controlled by an integrated electronic speed control. STEP 3) The rotation of the auger or open helix then moves the material along the base of the hopper towards and into the feeder spout (see Figure 3). STEP 4) The material then exits the volumetric feeder at the operators chosen rate and is dispensed into the process or container as determined by the user.

9 6 II. SECTION TWO: MODEL AND OPERATIONAL OVERVIEW (CONT.) C. STANDARD MODEL SPECIFICATION TABLE OPTION MODEL VMF-15 MODEL VMF-18 BUILT IN HOPPER CAPACITY 1.5 Cubic Feet 1.8 Cubic Feet HOPPER MATERIAL 12 and 16 Gauge 304 Stainless Steel FEEDER SPOUT UHMW BEARING ASSEMBLY UHMW O-RING SEAL Viton BASE AND FRAME MATERIAL Powder Coated Steel OPEN HELIX AUGER DIAMETER SIZES.75 Minimum to 2.5 Maximum (Custom Sizing Available) SOLID HELIX AUGER DIAMETER SIZES.75 Minimum to 2.5 Maximum (Custom Sizing Available) OVERWIND HELIX DIAMETER CONTROL BOX LEESON Speedmaster, Washguard, NEMA 4X SCR Motor Control MOTOR TYPE LEESON PE350 Series Parallel Shaft, TENV 90 VDC, Washguard Gearmotor 1/8 HP/ 14 RPM/ 180:1/ 1.5A MOTOR MODELS OFFERED: 1/4 HP/ 42 RPM/ 58:1/ 2.6A HP/ RPM/ RATIO/ AMP 1/4 HP/ 83 RPM/ 29:1/ 2.6A VIBRATORY AGITATOR (OPTIONAL) VIBCO Small Impact Line, Model SPRT-21: Watertight 20lb Force 115VAC 3200 RPM 1.4A 45dB Adjustable Speed Option ACCURACY Approximate Range Within 2% of Volume (To Determine Actual Accuracy Field Operation and Testing is Required) FEED RATE 0.2 to 35.4 Cubic Feet Per Hour (Theoretical Maximum) POWER REQUIRMENTS 115 VAC, HZ, Single Phase AMBIENT TEMPERATURE LIMIT 10 c -40 c CONTROL INPUT ma 4-20 ma CONTROL CONFIGURATIONS Manual, and Signal Start/Stop OPTIONAL ACCESORIES Vibratory Agitator Lift Off Lid Hinged Lid Custom Lid Extension Hoppers Loss in Weight Measurement System Wetting Cone Base Stands Adjusatble level feet Single Bag Loader Mixing Tanks

10 7 II. SECTION TWO: MODEL AND OPERATIONAL OVERVIEW (CONT.) D. AUGER SIZING AND FEED RATE INFORMATION The type and size of auger used by the volumetric feeder is directly dependent on the type of material that is going to be fed through the screw feeder. An estimated figure can be determined by utilizing an approximate material density for the material to be fed and then calculate the outcome using specific formulas. Scaletron will provide assistance and detailed information on topics relating to calculating auger sizes and feed rates before the purchase a VMF series volumetric screw feeder. For further information contact a Scaletron sales representative. However, even with the proper estimated feed rate calculation the feed rate can be affected by other outside variables, such as differences in environmental conditions or uniformity of the material being fed. Therefore, feed rate adjustment is covered in more detail later in this manual. Prior to any permanent operations the operator must ensure that the screw type and feed rate is correct, if these steps are overlooked or bypassed the screw feeder may not operate as anticipated. Approximate Maximum Volumetric Capacities (cu.ft./hr) Screw Diameter MOTOR TYPE 14 RPM 42 RPM 83 RPM Approximate Volumetric Capacities 75% Motor Speed Screw Diameter MOTOR TYPE 14 RPM 42 RPM 83 RPM **To ensure reliability and longevity of equipment Scaletron recommends that the feeder speed be kept at roughly 75% of maximum feed rate** IMPORTANT: The above approximate volumetric capacities have been calculated using Scaletron s standard auger dimensions and maximum rpm of each motor configuration offered. It is VERY IMPORTANT that this information be used for REFERENCE ONLY. Variables relating to the material being fed, such as material density and physical characteristics, coupled with actual feeding system components, such as the size and shape of the chemical handling system, will affect the actual volumetric capacity and feed rate.

11 8 III. SECTION THREE: COMPONENT DESCRIPTIONS A. DRIVE UNIT Scaletron s VMF series screw feeders are driven by Leeson TENV 90VDC PE350 Series parallel shaft washdown gearmotors. These gearmotors are designed for environments that would be subject to frequent wash downs and are inherently water and dust proof. They are also low maintenance and specifically made to be used with fullwave non-filtered SCR controls. The gearmotor bypasses the necessity for any extra moving parts, such as, pulleys and/or belts. It also provides simplified coupling to the drive shaft by allowing the utilization of a single high torque coupling assembly (see Figure 3). The primary shaft is supported by a bearing assembly made of UHMW (see Figure 4). The self lubricating material properties of UHMW allow the bearing assembly to provide rigid support but also allow smooth turning of the auger assembly. Located inside the bearing assembly is one o-ring. This o-ring provides a leak free seal around the drive shaft so material in the hopper cannot exit through the bearing assembly. B. FEED SYSTEM The auger assembly is similar for both the VMF-15 and VMF-18. The diameter of the overwind auger is the only difference between the two models. There are two basic components of the auger assembly. The first component is the primary auger helical screw, which can be a solid auger or an open helix type that provides the movement of the material to be dispensed. The second component is the overwind auger, which ensures the smooth delivery of materials to the primary auger. During assembly of the feed system the overwind auger is located over the threads of the primary auger, using the dowel hole to ensure correct locating. Then the primary auger is attached to the drive shaft by method of left hand threads making sure that the over wind auger base plate is correctly seated allowing the helical screw to be thoroughly tightened into operating position. Once fully assembled the primary auger is surrounded by the concentric overwind auger, allowing both helical screws to be turned at the same time via the same drive shaft. C. ELECTRONIC FEED CONTROL UNIT Scaletron Industries Ltd. uses a Leeson Speedmaster Washguard Model NEMA 4X SCR motor controller in the VMF series of volumetric feeders. For a detailed description, please refer to the Leeson Speedmaster Washguard Operating Manual that is supplied with the purchase of a volumetric screw feeder from Scaletron Industries Ltd. D. OPTIONAL VIBRATION SYSTEM The VMF-15 and VMF-18 both have the option of adding a VIBCO Model SPWT-21 electric vibratory agitator to the exterior of the hopper. Scaletron uses the VIBCO Model SPWT-21 because it is watertight, has an adjustable speed option, and delivers 20 lbs in force. With the addition of a vibratory agitator to the gravity fed hopper certain materials that normally are difficult to feed can be more easily moved to the primary auger ensuring positive feed control.

12 9 III. SECTION THREE: COMPONENT DESCRIPTIONS (CONTINUED) E. ADDITIONAL ACCESSORIES AND COMPONENTS Scaletron Industries Ltd. offers many accessories for the VMF series volumetric feeders. These accessories allow the customer to design a more specific feeder system to meet their needs. Accessories include integrated Loss in Weight measurement system, lids, hopper extensions, single bag loader, base stands, adjustable level feet, mixing tanks, and a wetting cone. All of the accessories offered by Scaletron Industries are described in more detail in the VMF Series Accessories Manual. If more information is needed please contact your local Scaletron Industries sales representative. 1. Loss in Weight Measurement System: Since Scaletron Industries Ltd. specializes in chemical scale design they thought it convenient to offer a fully integrated measuring system on the VMF series volumetric screw feeders. The system utilizes four frame mounted load cells directly connected to Scaletron s 1099 indicator. The indicator box can be mounted in its normal position which is attached to the motor cover box on the screw feeder or it can be wall mounted in a remote location with an additional length of indicator wire. 2. Lids: The basic volumetric screw feeder from Scaletron Industries Ltd. is NOT supplied with a lid for the top of the hopper. Scaletron Industries offers three lid configurations. The first type of lid is a simple, lift off type lid which has a handle for griping at its center and simply lifts vertically from the hopper. The second is a hinged lid that is securable by a lockable latch. Lastly, is the third lid which is secured via fasteners. This particular cap can then be customized to accept the cut out or bolt pattern of existing or anticipated feed system tubing. This accessory is primarily used when extra hopper capacity is required and the load of that extra capacity exceeds the load limits of the volumetric feeder s frame. 3. Hopper Extensions: Hopper extensions are offered that range from 2.4 to 13.6 additional cubic feet. These extensions are specifically designed to mount directly to the VMF series volumetric feeder. As a precaution relating to designed load capacity and stability considerations, Scaletron industries only recommends the use of their external hopper configurations. For more information please contact your Scaletron equipment sales representative. 4. Single Bag Loader: The single bag feeder allows the operator to safely load standard 50lb feed material bags into the hopper quickly and efficiently. This loader also can be fitted with a dust removal fan to keep work areas clean and free of airborne dust produced by unloading feeding material bags. For more information please contact your Scaletron equipment sales representative.

13 10 III. SECTION THREE: COMPONENT DESCRIPTIONS (CONT.) 5. Base Stands: Although stands are not supplied with the basic volumetric screw feeder package, Scaletron Industries does and will fabricate custom stands to meet the customer s requirements. For more information please contact your Scaletron equipment sales representative. 6. Adjustable Level Feet: If a need for leveling the volumetric feeder is foreseen Scaletron offers adjustable level feet. There are two types of leveling feet offered. One is a standard stainless steel foot with rubber pad that has the ability to raise and lower the height of the feeder. The second foot is a stainless steel bolt down swivel foot which allows for an adjustable height permanent mounting position. This type of foot is suited for situations where mounting surfaces are not level but the feeder must be securely bolted down. Adjustable level feet are already included with the Loss of Weight measurement system option. 7. Mixing Tank: Mixing tanks in various capacities, as well as, custom designed configurations are available from Scaletron Industries. These tanks are designed to be capable of accepting the VMF series volumetric feeders in a direct mounting location atop of the tanks. This location allows the customer to free up spatial resources by subtracting the need for a base stand or other mounting configurations. For more information please contact your Scaletron equipment sales representative. 8. Wetting Cone: Scaletron manufactures a wetting cone that is specially designed to be compatible with the VMF series of volumetric feeders. Scaletron s wetting cone allows the customer to ensure proper water to material mixture, while providing a dust free work environment. For more information please contact your Scaletron equipment sales representative. IV. SECTION FOUR: INSTALLATION AND SET UP A. UNPACKING THE FEEDER After the volumetric screw feeder is unpacked, check all items against packing list to confirm that all parts described or required are present. This ensures that all parts have been received from Scaletron s manufacturing facility and also confirms that no parts were accidently discarded during the unpacking process. Note: If possible, all equipment should be unpacked at the location where the assembly and installation is to be conducted.

14 11 IV. SECTION FOUR: INSTALLATION AND SETUP (CONT.) B. CHOOSING A LOCATION The location for the volumetric feeder is completely decided upon by the owner of the equipment. However, Scaletron would like to make it clear that installing the volumetric feeder in locations that are primarily damp or subject to fluctuating environmental conditions may have an adverse effect on the material density and flow rate of the material to be fed. Also, locations that are subject to strong air currents should be avoided, so that dry powdered chemicals will not become airborne creating dust that may cause property damage and/or personal injury. C. MOUNTING THE FEEDER The VMF series is designed to be mounted in various configurations and it is the decision of the equipment owner to decide on mounting locations. However, Scaletron does recommend the following when considering mounting location priorities: When possible use the correct stand accessories and/or mixing tank provided by Scaletron Industries, this will ensure that the volumetric feeder is properly secured per the factory requirements. If no standard Scaletron support equipment is purchased, then ensure the structure that is to support the volumetric feeder is level and has a mounting surface that is equal to or larger than dimensions I and J. These dimension represent the distance between the 0.75 diameter mounting holes located in the base assembly of the feeder.(see Figure 1 ) Always make sure all fasteners used to permanently locate the volumetric feeder and any connecting components are correctly installed and completely tightened and secured. WARNING!! Failure to correctly secure all fasteners used in installation of volumetric feeder may result in personal injury and/or property damage. NOTE: Scaletron Industries recommends that there should be 36 of clearance around the perimeter of the volumetric feeder after proper installation in its permanent location. Maintaining adequate clearance room will allow much easier maintenance inspections and servicing in the future.

15 12 IV. SECTION FOUR: INSTALLATION AND SETUP (CONT.) D. MOUNTING THE SCR CONTROL BOX Scaletron VMF series volumetric feeders come standard with their SCR control boxes and optional scale indicator boxes mounted directly to the motor mount box (see Figure 2) At the request of the customer, Scaletron will furnish the required extra components and accessories if the control box and/or optional scale indicator boxes must me mounted in a remote location separate from the feeder itself. Contact a Scaletron sales representative for more information. E. MOUNTING THE HOPPER Many times the built in standard hopper on a volumetric feeder simply does not provide enough volume for the demand of material to be dispensed. For this reason Scaletron provides optional hopper extensions. These extensions are the only accessories recommended for use on the VMF series volumetric feeders. Please refer to the Additional Accessories and Components section of this manual located on page 10. If the customer knows the volumetric feeder is or will be installed in a location where the built in hopper will be fed from a separately supported primary hopper, then Scaletron also provides a customizable hopper connection lid accessory which can utilize a flexible mount connection for the transfer of the material from the primary hopper to the built in hopper on the VMF series volumetric feeder. WARNING!! Scaletron strongly advises against the utilization of any other directly mounted primary hopper extensions. The use of which may cause premature equipment failure and/or damage to property and personnel. WARNING!! Serious injury or death may occur if proper and current electrical codes and procedures are not strictly adhered to during the installation, operation, and maintenance of this volumetric screw feeder. F. CONNECTING THE POWER Power and other electrical connections to the feeder are customizable to meet the owner s specific needs. However, the correct procedures must be followed for safe and efficient operation. Scaletron insists that the customer refers to the electrical diagrams and procedure instructions in the digital copies of the Leeson and Vibco operating manuals provided in conjunction with this manual upon the purchase of a VMF series volumetric feeder from Scaletron Industires.

16 13 IV. SECTION FOUR: INSATLLATION AND SETUP (CONT.) G. INITIAL STARTING OPERATIONS The standard VMF feeder from Scaletron Industries will arrive pre-calibrated and have the auger assembly correctly assembled. However, in order to ensure safe operating practices refer to the Safe Start Test Run checklist below. Safe Start Test Run Ensure power is off! Make sure all electrical connections and electrical enclosures are safely secured by correct methods Ensure all vibration mount assemblies are tight and secure Make sure the primary auger and overwind auger are tight and secured properly to drive shaft Clear any debris or foreign materials from the hopper and feeder spout Turn power on After the Safe Start Test Run checklist has been confirmed, follow the procedures below. NOTE: The instructions on the following page are taken from page 18 of the Leeson Speedmaster Washguard Operational Manual for the Leeson Model SCR Motor Control Unit. Please refer to Leeson s manual for advanced procedures and troubleshooting relating to the Leeson Model SCR Motor Control Unit. A digital copy of this manual is provided with each VMF Series volumetric feeder upon purchasing from Scaletron Industries Ltd.

17 14 IV. SECTION FOUR: INSTALLATION AND SETUP (CONT.)

18 15 IV. SECTION FOUR: INSTALLATION AND SETUP (CONT.) H. ADJUSTING THE CURRENT SET POINTS In an effort to speed up the installation and operation of the volumetric feeder, Scaletron ships each VMF series volumetric feeder from the factory pre-calibrated. The customer s desired specifications are taken into consideration and then calculated with standard theoretical loads, environment, and dimensions. The resulting calibration is as close to the customer s desired specifications as possible and may need no extra calibrating. However, volumetric feeders rely on other variables that can only be ascertained by real world on site experimentation. It is highly recommended that verification of the pre-calibration be made in the field at the installation site to establish the correct operating and calibration settings. Please refer the Calibrating starting section on page 10 of the Leeson Speedmaster Washguard Operational Manual for the Leeson Model SCR Motor Control Unit. (A provided in electronic copy is furnished with the purchase of a VMF Series volumetric feeder from Scaletron Industries) IMPORTANT: Scaletron strongly insists that on site test readings be performed to correctly verify the calibration of the VMF series volumetric feeder. DO NOT solely rely on factory calibration settings, variables such as material characteristics, environment, and hopper feeding equipment WILL BE different at the installation site. I. ADJUSTING THE VIBRATORY AGITATION CYCLE The optional vibratory agitator is directly mounted to the built in hopper on the VMF series feeder. Like SCR controls, the settings for the vibratory agitator are set to a factory standard obtained by calculating data supplied by customer s requirements and optimal theoretical operating conditions. The standard vibratory agitator is offered in a simple on/off configuration and will need expandable circuitry if feeding applications dictate a more complex vibrating cycle. Because, finding the correct vibration setting in real world operating conditions can be difficult and most likely will be determined by trial and error experimentation. To shorten the process and length of agitation experiments, Scaletron does offer adjustable variable controls which allows vibration cycles to be set and executed automatically. For more information contact your Scaleton Industries sales representative. NOTE: Running the optional Vibco agitator constantly will have negative affects regarding, material federates and equipment longevity. It is highly recommended by Scaletron that the use of an automated vibratory agitation cycle be adopted. V. SECTION FIVE: MAINTENANCE

19 16 A. RECOMMENDED PROCEDURES The VMF-15 and VMF-18 have been designed to be as maintenance free as possible. However, to ensure operational longevity a scheduled maintenance cycle is recommended and should be conducted periodically. Below are certain aspects and areas that are recommended to be incorporated into a maintenance checklist. WHILE POWER IS ON Visually inspect surrounding area for leaks or spills. Listen for abnormally loud sounds, such as clinks, clacks, squeaks, or grinding, that otherwise should not be present. Visually inspect base and exterior for deterioration of components due to rust or chemical corrosion. Visually inspect vibration mounts for cracking. Visually inspect for loose fasteners. Ensure operating environment is kept tidy and clean. WHILE POWER IS OFF!! Visually inspect interior of hopper for dents, deep gauges, thin walls, abnormal wear, weak joints and cracks in welds. Inspect overwind auger for extreme disfigurement, bends, or cracks. Inspect primary auger for extreme disfigurement, bends, or cracks. Try to push and pull auger horizontally to check for excessive play in bearing components. Remove coupling safety shield and inspect coupling for wear, cracking, and loose or missing set screws. Visually inspect bearing assembly for signs of chemical leakage. Ensure bearing assembly is tightened completely. Visually inspect all externally exposed wires for tears, cuts, breaks, or missing protective coating. If a vibratory agitator is installed visually inspect mounting hardware and welds for cracks and loose fasteners. Visually inspect vibration mounts for cracks and wear, then ensure that they are tightened completely. Grab hopper and attempt to shake back and forth in a sideways motion perpendicular to the primary auger and check for excessive movement and/or contacting metal sounds from vibration mounts. Ensure feed spout is completely tightened and inspect for excessive wear, chips, gauges, or cracks Make sure a periodic cleaning of all major components is carried out at a reasonable scheduled cycle relative to the amount of use the volumetric screw feeder is exposed to. V. SECTION FIVE: MAINTENANCE (CONT.)

20 17 B. IF MAINTENANCE IS REQUIRED WARNING!! TO AVOID PERSONAL INJURY, ENSURE POWER TO SCREW FEEDER IS OFF AND MOTOR IS LOCKED OUT CORRECTLY PRIOR TO PERFORMING ANY MAINTENANCE PROCEDURES! The following chart describes with detailed instructions common maintenance procedures: MAJOR COMPONENT AND SUB PARTS Auger Assembly - Overwind Auger - Primary Auger - 2 Dowel Pins Feeder Spout PROCEDURES FOR CORRECTION Disassembly 1. Remove all components that inhibit access to inside of built in hopper. 2. Remove all components that inhibit the removal of the primary auger screw, such as a, wetting cone. 3. Place 5/8 wrench or spanner wrench tool on Drive Shaft near the High Torque Coupling Assembly on the side closest to the hopper. This will prevent shaft rotation. 4. Place a 1-1/4 wrench on the flat spots of the Primary Auger base. 5. Turn Primary Auger side 1-1/4 wrench CW while holding Drive Shaft stationary. Threads are left handed and should break free with minimal effort. 6. Unthread Primary Auger screw completely. Overwind Auger should follow with Primary Auger. 7. Remove Overwind Auger by sliding Primary Auger towards Feed Spout while holding Overwind Auger stationary. Slide Primary Auger completely out of Feed Spout and lift Overwind Auger up and out of hopper. **Follow the same steps in reverse for assembly** Disassembly 1. Remove all components that inhibit the removal of the Feeder Spout, such as a, wetting cone or other attachments which may prevent having proper clearance to fully unscrew the Feeder Spout. 2. Grip outside of Feeder Spout firmly with channel locks or large pipe wrench. 3. Turn Feeder Spout CCW and unthread till completely clear of hopper threads. **Follow the same steps in reverse for assembly** TOOLS AND/OR PARTS REQUIRED (1) 5/8 open end wrench or spanner wrench tool (1) 1-1/4 open end wrench If replacement is required use: -Auger Assembly: SI-2015-VF-S-013 -Overwind Auger: SI-2015-VF-S-002 (VMF-15) SI-2015-VF-S-003 (VMF-18) -Dowel Pin: SI-COMN-HW-P-001 -Primary Auger:** **The correct part number for the Primary Auger will be relative to the original purchase order, refer to that documentation for replacement part number.** Pair of channel locks or large pipe wrench If replacement is required use: -Feeder Spout: SI-2015-VF-P-028** **The correct part number for the Feeder Spout will be relative to the original purchase order, refer to that documentation for replacement part number.**

21 18 Motor - High Torque Coupling Assembly - Shaft to Coupling Insert - Coupling Sleeve - Motor Mount Box Bearing Assembly - Outside Shaft Bearing Insert - Inside Shaft Bearing Insert - Drive Shaft - O-ring Seal Removal 1. Remove Motor Mount Box (see Figure 2) loosening four mounting bolts. 2. Remove any wiring to motor that would interfere with motor removal. (Be sure to label removed wires to allow for easier reassembly) 3. Remove Shaft Coupling Safety Shield (see Figure 2) by loosening two bolts or strain reliefs(if equipped with optional load cells) 4. Loosen the motor mount nuts underneath the frame to allow the motor to slide in its adjustment track slots. 5. Slide the Coupling Sleeve towards the hopper till the Shaft to Coupling Insert on the motor side is visibly disengaged. 6. Then slide motor away from hopper until motor mount nuts become free from frame in motor adjustment track slots. 7. Lift motor vertically from frame. **Follow the same steps in reverse for assembly and but ensure shaft alignment is correct** Removal 1. Follow all steps in removal of Motor removal section. 2. Follow all steps in Auger Assembly removal section. 3. After Motor is fully removed insert spanner wrench tool into the hole pattern on face of the Outside Shaft Bearing Insert. 4. Loosen the Outside Shaft Bearing Insert by turning spanner wrench tool in a CCW direction. 5. Once loosed fully remove Outside Shaft Bearing Insert by completely unthreading it from the hopper. 6. Remove Drive Shaft completely from bearing assembly by firmly griping and pulling toward motor mount. The Drive Shaft should slide out of the Inside Shaft Bearing Insert easily. 7. Once the Drive Shaft has been removed the main O- ring Seal can be inspected for wear or damage and replaced if needed. 8. To remove Inside Shaft Bearing Insert fit spanner wrench tool into hole pattern on face of Inside Shaft Bearing Insert 9. Loosen the Inside Shaft Bearing Insert by turning spanner wrench tool in a CCW direction. 10. Once loosened fully remove the Inside Shaft Bearing Insert by completely unthreading it from the hopper. **Follow the same steps in reverse for assembly and but ensure shaft alignment is correct** (1) open end wrench or socket If replacement is required use: -Motor: SI-2015-VF-B-001** -High Torque Coupling Assembly: SI-2015-VF-B-014 -Shaft to Coupling Insert: SI-2015-VF-B-002 -Coupling Sleeve: SI-2015-VF-B-003 -Motor Mount Box: SI-2015-VF-P-003 -Shaft Coupling Safety Shield: SI-2015-VF-P-006 **The correct part number for the Motor will be relative to the original purchase order, refer to that documentation for replacement part number.** (1) Spanner wrench tool (1) 1-1/4 open end wrench If replacement is required use: -Bearing Assembly: SI-2015-VF-S-009 -Outside Shaft Bearing Insert: SI-2015-VF-P-024 -Inside Shaft Bearing Insert: SI-2015-VF-P-023 -Drive Shaft: SI-2015-VF-P-025 -O-ring Seal: SI-COMN-HW-O-001

22 19 Vibration Mount Assembly - Outer Vibration Insert - Inner Vibration Insert - Stainless Steel Bolt - Stainless Steel Nut - Stainless Steel Split Washer - Stainless Steel Flat Washer Removal 1. Place ¾ wrench or socket on the head of the Stainless Steel Bolt and the corresponding Stainless Steel Nut on the other side of the assembly. 2. Loosen the Vibration Mount Assembly nuts by turning holding the Stainless Steel Bolt stationary and turning the Stainless Steel Nut CCW 3. Unthread the Stainless Steel Nut completely from the Vibration Mount Assembly. 4. Slide the Stainless Steel Bolt out from the Inner Vibration Insert and completely remove from assembly 5. At this point the Stainless Steel Flat Washer and Split Washer are free to be removed as well.( Make sure not to misplace washers) 6. Remove Inner and Outer Vibration Inserts by prying each in the direction away from the hopper base frame. **Follow the same steps in reverse for assembly** (2) 3/4 wrench or socket Small prying tool If replacement is required use: -Vibration Mount Assembly: SI-2015-VF-S-001 -Outer Vibration Insert: SI-2015-VF-P-016 -Inner Vibration Insert: SI-2015-VF-P-004 -Stainless Steel Bolt: SI-COMN-HW-B-001 -Stainless Steel Nut: SI-COMN-HW-N-001 -Stainless Steel Split Washer: SI-COMN-HW-W-001 -Stainless Steel Flat Washer: SI-COMN-HW-W-002 NOTE: Scaletron Industries reserves the right to make or edit part numbers and part designs as needed. To ensure correct part number always include your product serial number when engaging in correspondence with Scaletron Industries Ltd.

23 20 VI. SECTION SIX: APENDDIX A. FIGURE 1: OVERALL DIMENSIONS

24 21 VI. SECTION SIX: APENDDIX (CONT.) B. FIGURE 2: MAJOR COMPONENTS

25 22 VI. SECTION SIX: APENDDIX (CONT.) C. FIGURE 3: CUT AWAY VIEW

26 23 VI. SECTION SIX: APENDDIX (CONT.) D. FIGURE 4: AUGER ASSEMBLY

27 24 VI. SECTION SIX: APENDDIX (CONT.) E. FIGURE 5: VIBRATION MOUNT ASSEMBLY

28 25 VII. SECTION SEVEN: TROUBLE SHOOTING The following chart is provided to help with common operational errors Feeder has no output (motor is running but feed screw is not turning) Slow feed or No Feeder Output Coupling set screws have come loose or fallen out Feed screw is jammed with foreign material or large masses of feed material Current limit is set to low Motor is running in wrong direction Retighten or replace set screws in drive coupling Remove feeder spout and try to clear screw or empty feeder and remove primary auger assembly Reset current limit to correct adjustment position Reverse motor direction. Switch power leads connected to motor terminals Feed screw direction is wrong Speed of feed screw rotation has changed Hopper has become empty Material is forming a cave or hollow area around feeder screw Foreign material or lumps are found in output material Review volumetric feeder order documentation then consult with Scaletron sales representative Adjust and correct speed setting Fill hopper with feed material Consider need for feeder agitation and hopper vibration Remove spout and try to clear screw or empty feeder and remove trough and feed screw assembly

29 26 VII. SECTION SEVEN: TROUBLE SHOOTING (CONT.) Feeder has no material output (motor does not run) Feeder has no power Function switch on control box is in wrong position Signals from remote location are interrupted Fuse has blown SCR controller is broken or malfunctioning Motor brushes have become worn or misaligned Check for possible power connection issues and reconnect power Change switch to correct position Check to see if feeder operates manually. Correct remote signal interrupts Consult operating manuals and replace fuse if necessary Review volumetric feeder documentation and contact Scaletron sales representative Consult motor operational maintenance manual **NOTE: If feeder spout is removed while the feeder is full, contents of hopper may spill out quickly. Ensure proper measures are taken to avoid hazardous and/or unwanted chemical spills.**

30 27 VIII. SECTION EIGHT: FACTORY CALIBRATION SETTINGS P.O. Box 365, 53 Apple Tree Lane, Plumsteadville, PA Phone: (215) Fax (215) Website: CALIBRATION CERTIFICATE THIS IS TO CERTIFY THAT THE EQUIPMENT DESCRIBED BELOW WAS CALIBRATED USING FACTORY PREFERED MATERIAL DENSITY AND FEED RATE THEORETICAL TEST CALCULATIONS IN A CONTROLED ENVIRONMENT. IMPORTANT!!! ACTUAL MATERIAL DENSITY AND FEED RATES MAY DIFFER, PLEASE REFER TO SECTION FOUR OF THE OPERATIONAL AND MAINTENCE MANUAL FOR MORE INFORMATION. MODEL: VMF-15 ( ) / VMF-18 ( ) Volumetric screw feeder SERIAL NO: POWER: 115 VAC ( ) / Other: PRIMARY AUGER: Solid Helix ( ) / Open Helix ( ) PRIMARY AUGER DIAMETER: 0.75 ( ) / 1.5 ( ) / 2.5 ( ) / Other: OVERWIND AUGER DIAMETER: 3.63 ( ) / 5.5 ( ) / None ( ) MATERIAL BEING FED: ESTIMATED MATERIAL DENSITY: ESTIMATED FEED RATE: ESTIMATED ACCURACY: NOTES: CALIBRATION TECHNICIAN: Name / Signature / Date

31 28 IX. SECTION NINE: PARTS LIST AND ORDER FORM NOTE: Scaletron Industries reserves the right to make or edit part numbers and part designs as needed. To ensure correct part number always include your product serial number when engaging in correspondence with Scaletron Industries Ltd. MODEL: VMF-15 ( ) / VMF-18 ( ) Volumetric screw feeder SERIAL NO: CUSTOMER NAME: POINT OF CONTACT: METHOD OF CONTACT (PHONE / FAX / ): PART NUMBER FIGURE SHOWN DESCRIPTION OF PART SUPPLIED QTY. SI-2015-VF-S-007 Figure Stainless steel hopper for VMF-18 (1.8 cu. ft capacity) 1 SI-2015-VF-S-010 *Not Shown in 304 stainless steel hopper manual for VMF-15 (1.5 cu. ft capacity) 1 SI-2015-VF-S-005 Figure 2 Powder coated steel frame 1 SI-2015-VF-P-003 Figure 2 Motor control box 1 SI-2015-VF-P-006 Figure 2 Shaft coupling safety cover 1 SI-2015-VF-B-006 Figure 2 SCR Control box 1 SI-2015-VF-S-001 Figure 2 & 5 Vibration mount assembly 4 SI-2015-VF-P-004 Figure 5 Inner vibration insert 4 SI-2015-VF-P-016 Figure 5 Outer vibration insert 4 SI-COMN-HW-B-001 Figure 5 Stainless steel bolt 4 SI-COMN-HW-N-001 Figure 5 Stainless steel nut 4 SI-COMN-HW-W-001 Figure5 Stainless steel split washer 4 SI-COMN-HW-W-002 Figure 5 Stainless steel flat washer 4 SI-2015-VF-S-013 Figure 2 Auger assembly 1 SI-2015-VF-S-002 Figure 3 & 4 VMF-15 Overwind auger 1 SI-2015-VF-S-003 Figure 3 & 4 VMF-18 Overwind auger 1 SI-COMN-HW-P-001 Figure Dowel pins 2 SI-2015-VF-B-014 Figure 3 High torque coupling assembly 1 SI-2015-VF-B-003 Figure 3 & 4 Coupling sleeve 1 SI-2015-VF-B-002 Figure 4 Shaft to coupling insert 2 SI-2015-VF-S-009 Figure 3 Bearing assembly 1 SI-2015-VF-P-023 Figure 4 Inside shaft bearing insert 1 SI-2015-VF-P-024 Figure 4 Outside shaft bearing insert 1 SI-2015-VF-P-025 Figure 4 Drive shaft 1 SI-COMN-HW-O-001 Figure 4 O-ring seal 1 ORDER QTY. SPECIFIC AND OPTIONAL ACCESSORIES FOR SERIAL NUMBER: PART NUMBER FIGURE SHOWN DESCRIPTION OF PART SUPPLIED QTY. SI-2015-VF-B-005 Figure 2 Vibratory agitator 1 SI-COMN-XX-P-015 Figure 2 Load cell 4 SI-COMN-XX-C-004 Figure 2 Adjustable level foot 4 SI-COMN-XX-C-00 *Not shown in Adjustable level bolt down swivel foot manual 4 ORDER QTY. PUCHASE ORDER #: DATE: SIGNATURE:

32 29 X. SECTION TEN: CUSTOMER NOTES

33 30