GRAVIMETRIC BLENDERS GXB SERIES 4 INSTRUCTION MANUAL

GRAVIMETRIC BLENDERS GXB SERIES 4 INSTRUCTION MANUAL Series 20 Series 50 Series 100 Series 200 Series 600 INSTRUCTIONS FOR: INSTALLATION OPERATION TROUBLE SHOOTING MAINTENANCE SPECIFICATIONS ELECTRICAL DIAGRAMS Series 400 M-Tek Division of Mould-Tek Industries, Inc., 77 Nantucket Boulevard, Toronto, Ontario. Canada M1P 2N5 Ph. 416-285-5400 Fax 416-285-5432 www.mould-tek.com e-mail: sales@mould-tek.com

It is recommended you record the model, serial number(s) and date received of the equipment in the area provided below. This information is required by our service department to help you efficiently and effectively. Please retain this instructional manual, engineering drawings and parts list in a safe place for quick and easy reference of your equipment. MODEL NUMBER(S) SOFTWARE VERSION SERIAL NUMBER(S) DATE RECEIVED POWER SUPPLY 120 VOLTS AC 240 VOLTS AC Your safety is our concern! Exercise good judgement when operating electrically powered equipment. Never open the control cabinet or disassemble any of the components without first shutting off the main power. Use the GXB Series 4 Blender for the intended purpose only, metering and mixing dry free flowing materials such as pellets and granules. GAIN SETTINGS MODEL GXB24 110 MODEL GXB56 10 MODEL GXB106 100 MODEL GXB208 100 MODEL GXB408 10 MODEL GXB608 10 Disclaimer: Mould-Tek Industries Inc. shall not be liable for errors contained in this GXB Series 4 Instruction Manual or for incidental, consequential damages in connection with the furnishing, performance or use of this information. Mould-Tek Ind. Inc. will not make warranties of any kind with regard to this information, including, but not limited to the implied warranties of merchantability and fitness for a particular purpose. Effective: February 21 st, 2006 2

TABLE of CONTENTS Safety warnings and features...4 Disclaimers...5 Installation...6 SECTION A Standard Operating Sequence...7 Power On...8 Security Codes...8 Quick Start Operation...9 o Start Sequence, Step1...9 o Preset Batches...10 o Revise Formula Sequence, Step 2...10 Materials Hopper Identification...12 Formula Build...13 o Build Sequence...14 o Starting your Blender...15 o Viewing Diagnostic Screen...16 Materials Dispensing Sequence...17 Materials Layering...17 Regrind Materials, SMART Mode...19 o Set-Up...21 SECTION B Parameters, Set-Up...22 o Date/Time...22 o Utility...22 o Batch Time Alarm, item #1...22 o Material Feed Alarm, item #2...22 o Mixer Level, item #4...23 o Pinch and Auger delay, item #5...23 o Alarm, activate and deactivate, item #6...23 o Scale Set-up...23 o Language...23 Manual Operation...24 Reports...25 o Cycle...25 o Diagnostic...27 o Batch...29 o Formula...30 o Inventory...31 Mixer, Set-Up...32 Trouble shooting Guide...33 Maintenance...34 Specifications...35 Electrical diagrams...41 o Control panel components layout # 11775 Rev2...41 o Control terminal connections # 13592...42 o Solenoid Pin connections # 13593...43 o External Alarm # 12971...44 o Gaylord fill level switch # E14684...45 3

SAFETY WARNINGS PINCH VALVES (each hopper is fitted with a Pinch Valve for material dispensing) Do not place hands or fingers between pinch bars. Do not clear obstructions with fingers. Disconnect air supply before servicing Pinch Valves. MIXER DISCHARGE (when fitted with Posi-Valve) Do Not place hands or fingers in mixer discharge outlet. Do not clear obstructions with fingers. Disconnect air supply before servicing mixer discharge Posi-Valve. MIXER BLADE (all blades are driven by a high torque electric motor) Do not place hands into mixing chamber when in operation. Do not clear obstructions with hands or any other object when in operation. Replace damaged mixer blade immediately. Turn power off before servicing mixing chamber. SAFETY FEATURES SAFETY GUARDS (each blender is supplied with safety guards in hazard areas) Do not operate blender with safety guards removed. Replace all guards immediately after servicing blender. Do not replace guards with inferior materials use original manufacture components only. SAFETY SWITCHES (each blender is supplied with safety interlocks switch) Do not remove safety interlock switch. Do not operate blender without safety interlock switch. Do not short circuit safety interlock switch. Replace defective safety interlock switch immediately. Note: Failure to adhere to the above can result in bodily harm and equipment damage. 4

DISCLAIMERS DEFECTIVE PRODUCT PRODUCTION Production conditions and materials will vary widely from customer to customer. We cannot anticipate all of the processing conditions and/or requirements and confirm that the equipment will perform perfectly in all conditions. It is the customer s responsibility to review and confirm the equipment performance based on the overall manufacturing process is to their satisfaction. We cannot be held responsible for losses due to incorrect blending of product, equipment malfunction or incorrect design for your requirements and/or consequential losses due to equipment not blending to requirements. Our responsibility is to repair, replace, correct or accept return of the equipment for refund if the equipment does not perform as designed or we have inadvertently misrepresented the equipment to the application. INSTRUCTION MANUAL ACCURACY Every effort is made to maintain this manual as current and correct as possible. Product technology and changes occur prior to reprinting. Modifications made to the operation design of the blender or to the software will not be reflected in the manual for at least 6 months after implementation. We reserve the right to make changes without notice and do not guarantee the manual to be accurate in its entirety. Should you have any questions in regard to information provided in this instruction manual or identify errors, we will appreciate you notifying us so that we may make the applicable corrections. Updated manuals and/or applicable appendix(s) will be gladly provided. 5

INSTALLATION 1. Place blender in an area where the floor is level and free of obstacles, which may cause damage to the unit. 2. When mounting directly onto the machine throat, utilize a sturdy adaptor, which is capable of proper support. For design recommendation consult your supplier or the manufacturer. 3. Carefully unpack the control panel and mount onto the blender in the area provided. 4. Connect to the applicable power supply, 110 volt, single phase, 50/60 Hz or 240 volt, single phase, 50/60 Hz, with 15amp. circuit breaker protection. To prevent any inconsistency of power supply due to fluctuations we recommend a properly grounded separate supply. Voltage fluctuations will result in deficient operation of the blender. 5. Remove all items, which are identified with tag(s). REMOVE, FOR SHIPPING ONLY. 6. Connect compressed air supply to the pressure regulator provided. Maximum operating pressure is 50 60 P.S.I. Note: When air is connected and the pressure is set all Pinch Valves will close immediately. 7. Mount minor ingredient hoppers onto minor Pinch Valve feeder housings provided. Check connections of the compressed air lines. Red airline connects to the rear and the white connects to the front (shaft end) on each air cylinder of each Pinch Valve. 8. Mount applicable vacuum loaders onto material hoppers and connect all required electrics and compressed air. 9. Your GXB Series 4 Gravimetric Blender is now ready for start-up. Refer to operation procedures. NOTE: Your unit has been factory tested and approved. The Mould-Tek GXB Series 4 blender features multi-tasking ability to access the following parameters while the blender is in full operation: Formulas; building, revising and viewing. Utility parameters; batch time & material feed time values, regrind set-up, mixer level, pinch delay and alarms activate & deactivate. Mixer; time value, continuous and timed modes. Reports; viewing and printing. Administration; security codes and access time value. The following can only be performed when the blender is stopped: Cycle mode; changing operating from one formula to another. Deleting active formula. Scale calibration. Manual operation. Model configuration. 6

STANDARD OPERATING SEQUENCE SECTION A The Following describes the complete batch cycle sequence of the GXB Series 4 Blender. Mixer Awaiting Discharge Power On. Select Formula Materials are mixed Scale Discharge Dispense material #8 Dispense material #7 Dispense material #6 Dispense material #4 Dispense material #5 Start Cycle Dispense material #1 Dispense material #2 Dispense material #3 POWER ON: Refer to page No.11. SELECT FORMULA: Refer to page No.15 and/or 14. START CYCLE: Refer to page No.15. DISPENSE MATERIALS, 1 THRU 8: Each material is dispensed individually. The sequence in which the materials are dispensed is programmable by the operator. Refer to page No.16. SCALE DISCHARGE: All materials are discharged into the mixing chamber. MATERIALS ARE MIXED: Timed Mix Mode; the mixer agitator rotates for the set mix time and stops when this time has elapsed. Continuous Mix Mode; the mixer agitator rotates continuously. Refer to page No.31. MIXER AWAITING DISCHARGE: The blender is in a paused mode awaiting the mixed material to be discharged. When the mixed material is discharged to the level below the mixer sensor the scale discharges the weighed material being held in the scale and the cycle repeats. For the many additional features of the GXB Series 4 Blender, refer to the Table of Contents of this instructional manual. 7

POWER ON Turn power on at the main switch located on the right side of the control panel. The Start up screen will appear displaying the Model number, Serial number and Software Version as shown below. security allows access to view and revise all data and parameters including the user code. The User security allows access to view and revise Reports, Formulas, Mixer and Cycling Parameters. SETTING SECURITY CODES AND ACCESS TIME: 1. From the Main Menu select Administration, this will display the Administration screen. After a few seconds has elapsed, the Main Menu screen will be displayed. 2. Select Set User Security Code by touching the numerical button located at the right. A numerical keypad will be displayed. From the Main Menu operation selections are made. All functions are displayed by individual Touch Button fields and are selected by touching each with your finger. When you have selected a function the Touch Button will Hi-lite confirming your selection. The software automatically controls the screen contrast however; in some conditions manual adjustment will be required. To make the screen darker touch and release the shaded button repeatedly until you are satisfied with the setting. To make the screen brighter repeat the sequence using the unshaded button. SECURITY CODES Use of the Security codes is optional. The blender does not require security codes to operate. It is recommended when security of data is necessary. Two levels of security is available, Administration and User. The administration 3. Select the applicable numerical code (each number selected will be displayed in the upper right field) and touch Save. Your code is stored and will be displayed in the field of the User Security Code. 4. Repeat this procedure for Administration Code and Security Time (sec). Note: The Security Time is the access time allowed, when this time has elapsed you will be required to re-enter your code to continue. However, when any function Touch Button and/or entry of data is performed the security timer resets continuously. Time elapses when none of the afore mentioned is performed. Recommended value is 30 seconds. Model Changes: This is factory set. Contact the factory for further information. 8

SECTION A QUICK START OPERATION Your GXB Series 4 Blender is supplied from the factory pre-programmed with one formula identified 1A. This formula will consist of the specified materials arrangement for each particular model purchased. The following is a list of standard materials arrangement based on the number of materials required for blending. Identify the applicable model, materials arrangement and proceed to Quick Start instructions. Number Materials Arrangement of Majors Minors Applicable Models Materials Virgin & Regrind Additive & Color 2 1 1 GXB 24, 54, 104, 204, 404 & 604 3 2 1 GXB 24, 54, 104, 204, 404 & 604 4 2 2 GXB 24, 54, 104, 204, 404 & 604 5 4 1 GXB 55, 105, 205, 405 & 605 6 4 2 GXB 56, 106, 206, 406 & 606 7 4 3 GXB 207, 407 & 607 8 4 4 GXB 208, 408 & 608 Note: For materials arrangement other than listed above refer to Formula Build section. The GXB Series 4 control is based on a Menu driven format. The operator has access to all parameters for editing present data or entering new data through the quick response bright-lit touch screen. From the Main Menu operational selections are made. All functions are identified by individual touch button fields and are accessed by touching each with your finger for a second. When touched each will Hi-lite confirming your selection and the required screen will be displayed. As stated above your GXB Series 4 is provided with a pre-programmed formula 1A, the preset value of each major ingredient (virgin and/or regrind) will be greater than 4% and each minor ingredient will be less than 4%, example: Models GXB 24, 54, 104, 204, 404 and 604 are capable of blending a maximum of four materials, two major ingredients @ 48% each and two minor ingredients @ 2% each. This pre-programmed formula is to assist you in getting your blender up and running quickly. Should this formula meet your requirements proceed to Start Sequence Step 1 below, should you need to revise this formula proceed to Revise Formula Step 2. Start Sequence, Step 1 1. From the Main Menu select Cycle. 2. The Cycle Set-up screen will appear. Formula 1A will be displayed hi-lited, similar as shown. Select Auto/Single. 9

3. The Auto Single screen will appear. 4. Select Auto, the blender will begin to operate and the Monitor screen will appear displaying all running parameters; Materials I.D., preset % of each ingredient, preset unit value, total amount of material processed, total batch unit value, the number of batches processed and the blending rate. 7. To stop the blender select Stop, the field will hi-lite and change to display wait. The blender will continue to operate completing the batch cycle. When the unit has stopped the Wait field which is hi-lited will change to display Stopped and the total number of batches processed. 5. Preset Batches: The operator has the option of programming a preset number of total batches required for a specific production run. Select the touch button below the Auto button, a numerical keypad will be displayed, select the number required and touch Enter. The preset number and each completed batch will be displayed on the Monitor screen. When the preset count is completed the blender will stop and the preset number will be highlighted indicating the count is complete. To operate continuously without preset counts enter 0, the blender will operate until the operator stops it. To restart the blender Return to Main Menu by touching the button. Repeat Steps 1 to 4. Revise Formula Sequence, Step 2 1. From the Main Menu select Formula Setup. 6. To pause the blender select Pause, the unit will stop immediately and the Pause field will become hi-lited. To restart again select Pause, the blender will commence operation at the same point of the cycle the Pause was initiated. The hi-lite will be removed from the Pause field. 2. You will be requested to enter your User security code. At this time your User security code has not been set-up. Touch 0 then Save. 10

3. The Formula Setup screen will appear displaying the factory preset formula 1A similar to screen shown below. 4. Select Revise from this screen. Note, the screens here shows Virgin material revised from 48 to 42%. Continue this sequence for each material. When each material value is revised touch the Return to Main Menu button. You are now ready to start the blender into operation. You will notice that the Formula has been changed from an A designation to B designation. 7. From the Main Menu select Cycle, the Cycle Setup screen will appear. 5. We will now edit the preset % of each material and designate each material used. Firstly, using the scroll buttons scroll up or down to select which material requires revising. When selected touch the Enter % button, this will display the numerical keypad. 6. Select the required value by touching the appropriate number buttons followed by Save. The new value will be automatically entered. 8. In the Formula list scroll down to 1B, touch Auto/Single button, the screen will appear. 9. Touch the Auto button, the blender will begin to operate and the Monitor screen will appear displaying all running conditions. To Stop or Pause the blender, refer to items 5 and 6 of Quick Start Operation Step 1. N OTE: Calibration of the scale is factory set however, the zero point may require setting prior to start-up. The red LED must display 00.00 or 000.00 depending on the model. Should the LED display 0.00 or 00.00 the scale must be rezeroed. Refer to the Calibration procedure in this manual. For the many additional features of the GXB Series 4 Blender, refer to the Table of Contents of this instructional manual. 11

MATERIALS HOPPER IDENTIFICATION The materials hopper identification procedure is required to correctly identify each material stored in its desired hopper. The following instructions demonstrate hoppers identification for Virgin, regrind, Color and Additive materials utilizing the Materials Library of the GXB Series 4. This library consists of a variety of materials, 14 generic names, 5 regrind, 8 colors, 8 additives and 6 unused. The library is to assist the operator when building formulas to correctly identify each material for proper tracking of material usage and batch cycle reports. Note: This procedure is required prior to entering new formulas. Procedure: 1. From Main Menu select Formula Setup. Enter security code. 5. Repeat for Regrind, Color, Additive and all additional materials for assignment to hoppers #2 thru #8 where applicable. To access each material name, use the left and right arrows for scrolling through the materials library to display screens as shown. 2. From Formula Setup select Hopper Setup. 3. Using the up arrow, scroll to #1 position and select the Material touch button. 4. Select the Virgin touch button. Your selection will automatically be assigned to #1, Virgin. 12

FORMULA BUILD The GXB Series 4 control includes multiple standard options for building formulas, all easily performed by the operator. Option A: Colors and Additives added to the virgin material only. Option B: Colors and Additives added to the total batch. Included in the GXB series 4 is a library identifying a variety of materials consisting of 14 generic names, 5 regrind, 8 colors, 8 additives and 6 unused. This library is to assist the operator when building formulas to correctly identify each material for proper tracking of material usage and batch cycle reports. The control of when color and additive is added to the virgin material only or to the total batch is determined by using Color and Additive (without asterisk) or Color* and Additive* (with asterisk) respectively. Materials Library Virgin Materials Regrinds Colors Additives Unused VIRGIN NYLON Regrind 1 Color 1 Additive 1 Unused 1 ABS PET Regrind 2 Color 2 Additive 2 Unused 2 ACRYLIC POLYCARBONATE Regrind 3 Color 3 Additive 3 Unused 3 HDPE POLYETHYLENE Regrind 4 Color 4 Additive 4 Unused 4 HIPS POLYPROPYLENE Regrind* Color* Additive* Unused 5 LDPE POLYSTYRENE Color* 2 Additive* 2 Unused 6 LLDPE PVC Color* 3 Additive* 3 Color* 4 Additive* 4 Depending upon the model the GXB Series 4 is capable of formulating up to 8 materials, smaller models can blend a m aximum of 4 materials. A combination of multiple regrind, color and additive content per formula is easily achieved. The following char ts show a variety of formula s ; charts A1 thru A4 depict color a nd additive added to the virgin content onl y, charts B1 thru B2 depict color* and additiv e* added to a total 5 lb batch. Option A, Chart 1 A1 (4 components) A2 (5 components) Virgin 60% 3 lbs Polystyrene 55% 2.75 lbs Regrind 40% 2 lbs Regrind1 22.5% 1.125 lbs Color 2% 0.06 lbs Regrind2 22.5% 1.125 lbs Additive 2% 0.06 lbs Color1 4% 0.11 lbs Additive1 4% 0.11 lbs Total 104% 5.12 lbs Total 108% 5.22 lbs Option A, Chart 2 A3 (6 compone nts) A4 (5 components) Polypropylene 35% 1.75 lbs ABS 65% 3.25 lbs Regrind1 20% 1. 0 lbs Regrind1 35% 1. 75 lbs Regrind2 25 % 1.25 lb s Color1 2% 0.065 lbs R egrind3 20 % 1.0 lbs Additi ve1 4% 0.13 lbs Color1 3% 0.052 lbs Additive2 4% 0.13 lbs A dditive1 3% 0.052 lbs Total 106% 5.10 lbs Total 110% 5.32 lbs 13

Option B, Chart 1 B1 (4 componen ts) B2 ( 5 componen ts) Virgin 56% 2. 8 lbs Polystyrene 45% 2. 25 lbs Regrind1 40% 2 lbs Regrind1 23.5% 1. 175 lbs Color* 2% 0. 1 lbs Regrind2 23.5% 1. 175 lbs Additive* 2% 0. 1 lbs Color*1 4% 0. 2 lbs Add itive*1 4 % 0.2 lbs Total 100% 5. 0 lbs Total 100% 5. 0 lbs Option B, Chart 2 B3 (6 components) B4 (5 components) Polypropylene 35% 1.75 lbs ABS 60% 3 lbs Regrind1 18% 0.9 lbs Regrind1 30% 1.5 lbs Regrind2 23% 1.15 lbs Color*1 2% 0.1 lbs Regrind3 18% 0.9 lbs Additive*1 4% 0.2 lbs Color*1 3% 0.15 lbs Additive*2 4% 0.2 lbs Additive*1 3% 0.15 lbs Total 100% 5.0 lbs Total 100% 5.0 lbs Formula Build Sequence: The GXB Series 4 allows the operator to build and store formulas with and without revisions. This is beneficial when changes to formulas are required while maintaining its original I.D. Example, a formula which is originally identified as #12345678A can be revised up to four times, B, C, D and E. The original number is retained with alpha designations for each revision. The memory capacity for all formulas is 100, this will vary depending upon the amount of revised and non-revised formulas stored. The maximum characters available for I.D are eight (8). Steps: 3. Enter your Formula I.D number. 1. From the Main Menu select Formula Setup. Enter security code. 4. The Edit Revise Formula screen will be displayed. 2. Select touch button New. 5. Using the up arrow, scroll to #1 position. Select the Material button. 14

6. Scroll through the materials list using the Starting your blender: Left or Right arrow bu ttons, select the required material name. Your selection will automatically be assigned to #1. Sele ct the Enter % button. 1. From the Main Menu select Cycle. 2. The Cycle Setup screen will appear. Using the scroll arrows select the formula number entered. 3. Select Au to/singl e. 7. From the numerical keypad s elect the required value, enter by selecting the Save button. Your selection will automatically be assigned to the #1 position material. 4. The Auto/Single screen will appear. 8. Repeat steps 5 through 7 for additional materials. As each material value is entered the total of the formula s % is displayed. When the complete formula is entered select the Return to Main Menu button. Your blender is now ready to operate with the formula and materials sequenc e you have entered. Continue to Starting Your Blender. Note: Formula shown in list with an * (18*A) identifies the last formula ran and cannot be deleted. To delete this formula, in the cycle mode select another formula, this will revise the * identification tion to the new selection allowing 18A to be deleted. 5. Select Auto, the blender will begin to operate and the Monitor screen will appear displaying all of the running parameters; Materials I.D., preset % of each ingredient, preset unit value, total batch unit value, the number of batches processed and the blending rate. 15

VIEWING DIAGNOSTIC SCREEN The GXB Series 4 Diagnostic data provides the operator with each material weight dispensed in gram values. The accuracies of each material dispensed from batch to batch are best shown in grams. The information displayed for viewing is: Material names Material flow (numerical value) Target weight requested Actual weight dispensed +/- Deviation dispensed With this information the operator can quickly identify the dispensing condition of each material and perform any applicable revisions to his set-up. The GXB Series 4 can be programmed to provide Diagnostic printed reports for each cycle or interval cycles, see page #27. To view the diagnostic information follow these steps: From the Main Menu select Reports. From the Reports select Diagnostics. The Diagnostics screen will be displayed. Note, the operator can view each screen back and forth between the Monitor and the Diagnostic screens by selecting the Monitor button at the bottom of the Diagnostic screen and the return navigation button at the bottom of the Monitor screen. 16

MATERIALS DISPENSING SEQUENC E The operator has the ability to program a preferred sequence of each material to be dispensed. This sequence is performed in the FORMULA BUILD SEQUENCE, see instructions page #14. In this feature a list of 8 fields are presented on the screen numbered 1 thru 8, each representing a dispense sequence. In each field the operator will enter the desired material, this determines the sequence each material will be dispensed. For example, if the desire is to dispense Virgin 1 st, Regrind 2 nd, Color 3 rd, a nd Additive 4 th the operator would enter each material appropriately, Virgin in field #1, Regrind in field #2, Color in field #3 and Additive in field #4. This can be programmed in any combination of up to eight materials. Refer to the following three examples. #1 #2 #3 Dispense Dispense Dispense Materials Materials Sequence Sequence Sequence Materials st 1 Virgin st 1 Regrind1 1 st Polypropylene 2 nd Regrind 2 nd Polystyrene nd 2 Regrind1 rd 3 Color 3 rd Regrind2 rd 3 Color1 4 th Additive 4 th Color1 4 th Regrind2 5 th Unused 5 th Additive1 5 th Additive1 6 th Unused 6 th Unused 6 th Regrind3 7 th Unused 7 th Unused 7 th Unused 8 th Unused 8 th Unused 8 th Unused This ability to program a preferred sequence will result in a good quality homogeneous blend. MATERIALS LAYERING The operator has the ability to program each material for layer dispensing. This is particularly advantageous when blending materials of varying bulk densities, resulting in a good homogeneous mix. For instance a required blend consisting of two materials, one @ 32 lb/cu.ft, one @ 44 lb/cu.ft, volume of each @ 70% and 30% respectively could produce a poor mix when deposited into the mixer. Note: Excessive mixing will not produce a good mix, in this application excessive mixing could result in de-mixing (or material separation). Layering of the materials into the scale then depositing into the mixer, will require a shorter mixing time and produce a homogeneous mix. See the following 4 charts for recommended programming. Chart 1 2 Materials Layering (4 layers, 2 per material) Dispense Sequence Hopper Material #1 @ 32 lb/cu.ft Hopper Material #2 @ 44 lb/cu.ft 1 st #1 35% 2 nd #2 15% rd 3 #1 35% 4 th #2 15% Total 1 70% 2 30% 17

Chart 2 2 Materials Layering (8 layers, 4 per material) Dispense Sequence Hopper Material #1 @32 lb/cu.ft Hopper Material #2 @ 44 lb/cu.ft 1 st #1 17.5% 2 nd #2 7.5% 3 rd #1 17.5% 4 th #2 7.5% 5 th #1 17.5% 6 th #2 7.5% 7 th #1 17.5% 8 th #2 7.5% Total 1 70% 2 30% Note: Even though the examp les above de pict 4 & 8 layers dispensing of each material, storage of materials will require two hoppers, one per hopper. The GXB Series 4 control will dispense from hopper #1 first, hopper # 2 second, return to hopper #1 third and return to hopper #2 fourth. An 8 layer seque nce will be similar in that the control will return to hoppers 1 and 2 after each dispense. For a requirement where 4 materials are blend ed @ 25% each, a maximum of 8 layers can be programmed, 2 layers per material as shown below. Chart 3 4 Materials (8 layers, 2 per material) Dispense Material Material Material Material Hopper Hopper Hopper Hopper Sequence #1 #2 #3 #4 1 st #1 12.5% 2 nd #2 12.5% 3 rd #3 12.5% 4 th #4 12.5% 5 th #1 12.5% 6 th #2 12.5% 7 th #3 12.5% 8 th #4 12.5% Total 25% 25% 25% 25% Eight layers are the maximum available, however the combination of layers is dependant on the number of materials and occasiona lly the % required of each m aterial. For instance a 3 material b lend of 60% Virg in, 36% Regrind and 4% Color can be programmed to dispense the larger material content in four layers @ 15% each, the lower material content in 2 layers @ 18% each and the lowest material content in 2 layers @ 2% each. Materials storage will be required in three hoppers, one per material. See the follow ing chart #4, for programming. 18

Chart 4 3 Materials (1 @ 4 layers & 2 @ 2 layers each) Dispense Virgin Material Regrind Material Color Material Sequence Hopper #1 Hopper #2 Hopper #3 1 st Virgi n 15% 2 nd Regrind 18% 3 rd Virgi n 15% 4 th Regrind 18% 5 th Color 2% 6 th Virg in 15% 7 th Color 2% th 8 Virgin 15% Total 60% 36% 4% In programming this way the virgin material in relation to the regrind is dispensed in a volume similar to each other and the color is dispensed in two layers. The result is a homogeneous mix with minimum mixing time. Note: The number and percentage of layers utilized can lower the blending rate, however the flexibility of the GXB Series 4 control allows the operator to program the control for ideal blending. Refer to MATERIALS HOPPER IDENTIFICATION instructions to set-up both Materials Dispensing Sequence and Materials Layering features, see page #11. REGRIND MATERIALS SMART MODE Sequence Mode After Regrind Try When dispensing regrind materials as part of the required formula, the GXB series 4 has the ability to recognize when regrind materials are not available, automatically revise the formula to batch without regrind, allowing the blender to remain in operation. Also included is our standard REGRIND SETUP fea ture for programming the blender to revisit eac h regrind material hopper in intervals of 1 thru 10 batch cycles after the initial recog nition and revision of form ula. When regrind materials are again recognized as bein g availabl e, the GXB Series 4 will revert to its original formula which includes regrind as part of the formu la and continue to operate. EXAMPLE: Chart 1, Sequence A; color and additive are added to a 5lb batch. Chart 2, Sequence B; color and additive are added to virgin content only of a 5lb batch. Sequence A: The required formula is: Virgin - 48%, Regrind1-48%, Color* - 2%, Additive* - 2% 1. Virgin hopper dispenses 48%. 2. Regrind hopper runs out of material dispensing only 21.6%, the control recognizes that material is no longer available. 3. The cycle continues dispensing color* @ 2% and additive* @ 2%. 19

4. The control has recognized that this is an unacceptable batch, prevents the scale from discharging, revises and dispenses a make-up formula of 26.4% Virgin, 2% color* and 2% additive* into the scale and then dispenses the total batch into the mixer. This confirms that the correct ratio is maintained. The result being an acceptable batch has been produced. 5. The control will now continue to operate with the revised formula of Virgin 96%, Color* 2% and Addi tive * 2%. 6. The blender will continue to operate until the revisit count of REGRIND SETUP is met. At this time the control will return to the original formula and attempt to dispense material from the regrind hopper. Should material be present and is dispensed to the requested ratio, the control will maintain the original formula and continue to operate. Should regrind not be available the control will revert to the revised formula and continue to operate, repeating the sequence. Chart 1 (color & additive added to total batch) Original Formula Dispensed (loss of regrind) Make-up Formula Revised Formula Virgin 48% 2.4 lbs 48% 2.4 lbs 26.4% 1.32 lbs 96 % 4.8 lbs Regrind1 48% 2.4 lbs 21.6% 1.08 lbs 0 0 0 0 Color* 0.026 0.1 lbs 2% 0.1 lbs 2% 2% lbs 2% 0.1 lbs Additive* 0.026 0.1 lbs 2% 0.1 lbs 2% 2% lbs 2% 0.1 lbs Sequence B: T he required formula is: Virgin - 55%, Regrind1-45%, Color1-2%, Additive - 2% 1. Virgin hopper dispenses 55 %. 2. Regrind hopper runs out of material dispensing 27%, the control recognizes that material is no longer available. 3. The cycle continues dispensing color1 @ 2% and additive @ 2%. 4. The control has recognized that this is an unacceptable batch, prevents the scale from discharging, revises and dispenses a make-up formula of 18% Virgin, 2% color1 and 2% additive into the scale and then dispenses the total batch into the mixer. This confirms that the correct ratio is maintained. The result is, an acceptable batch has been produced. 5. The control will now continue to operate with the revised formula of Virgin 100%, Color1 2% and Additive 2%. 6. The blender will continue to operate until the revisit count of REGRIND SETUP is met. At this time the control will return to the original formula and attempt to dispense material from the regrind hopper. Should material be present and is dispensed to the requested ratio, the control will maintain the original formula and continue to operate. Should regrind not be available the control will revert to the revised formula and continue to operate, repeating the sequence. See the following chart. 20

Original Formula Virgin 55% Regrind1 45% Color1 2% Additive 2% Chart 2 (color & additive added to virgin) Dispensed (loss of regrind) Make-up Formula Revised Formula 2.75 lbs 55% 2.75 lbs 18% 0.9 lbs 100 % 5.0 lbs 2.25 lbs 27% 1.35 lbs 0 0 0 0 0.055 0.055 0.018 2% 2% lbs lbs lbs 0.055 0.055 0.018 2% 2% lbs lbs lbs 2% 0.1 lbs 2% 0.1 lbs The SMART mode will au tomatically function whenever the loss of regrind is recognized. When dispensing multiple regrinds, each a part of a single formula, the SMART mode will function as described addressing each regrind material individually. SMART MODE SET-UP 1. From the M ain Menu select Parameters. Enter security code. 2. From the Parameters screen select Utility. 3. From the Utility screen select Regrind Setup. 4. The Regrind Setup numerical keypad will appear. 5. Enter the required interval number, 1 thru 10. The interval number you enter is the number of cycles the blender will batch and return to the Regrind hopper to check for regrind material. Sequence as follows, (assuming 3 is the interval number): A: The control has recognized that regrind material is no longer available. B: The control will initiate either Sequence A, page #17 or B, page #18 (dependant on batching preference). C: All data will be stored and available for reporting. NOTE: The SMART mode can be used for multiple regrind materials when part of a single formula. Each regrind material will be addressed individually. Should a formula consist of multiple regrind materials but the SMART mode is not required for all, use a material name other than Regrind to identify the materials not applicable. Example, a formula consisting of four regrind materials and two require the SMART mode, identify the remaining two with a generic name such as Nylon and ABS. 21

SECTION B PARAMETERS, SET-UP All parameters are factory s et. We recommend you contact the factory prior to making revisions; incorrect data will affect the performa nce of your blender. From t he Main Me nu select Parameters. 3. To change from AM to PM, select the AM and/or PM button. (The same button toggles between AM and PM). 4. To change from 24Hr to 12Hr, select the 24Hr and/or 12H r button. (T he same button toggles between 24Hr and 12Hr). UTILITY Consist of Parameter values for Batch Time Alarm, Material Feed Alarm, Regrind SMART mode Set-up (Ref: page 17), Mixer Level, Pinch Delay, A uger Delay and Alarms ON/OFF. Note: Pinch Delay is applicable to specific operating software version and Auger Delay is applicable to blenders fitted with Auger Minor Feeders. All data for each parameter will be entered through the displayed numerical keypad. 1. Batch Time Alarm This value (seconds) represents the total acceptable time Enter your security code. Parameters screen will be displayed. The following steps will guide you through any necess ary revisions. Your User security will be required. DATE/TIME Validates all Cycle, Batch and Inventory reports. Date and Time are recorded on each printed report. 1. Select Date/Time. The Date/Time screen will be displayed. 2. Upon selection of Year, Month, Date, Hour and Minute a numerical keypad will be displayed for all data revisions. allowed to elapse when dispensing a complete batch. Should this time elapse and a batch is incomplete, the audible alarm will function and a visual message will be displayed identifying the alarm condition. 2. Material Feed Alarm This value (seconds) represents the total acceptable time allowed for dispensing material from each hopper. Should this time elapse and material is not completely dispensed, the audible alarm will function and a visual message will be displayed identifying the specific hopper. 3. Regrind Setup - SMART mode, this value (numerical) represents how the blender will operate when regrind material is not available. A value of 0 will stop the blender operation, the audible alarm will function and a visual message will be 22

displayed identifying the alarm condition. A value higher than 0 represents the amount of batch cycles required revisiting the regrind material hopper for material availability. Should regrind be present the control will revert back (from the revised formula/recipe, less regrind) to the original including regrind material. (Ref: page 17) 4. Mixer Level This value (seconds) represents the acceptable time allowed for the mixer discharge valve remaining open after the material flows below the mixer level sensor. A high value maintains less ma terial in the mixer, a low value maintains more material. 5. Pinch and Auger Delay This value ( milli seconds) represents a delay between each pinch as material is dispensed. In case of the auger the delay results in quick short rotations. 6. Alarm Activates or deactivates the optional Hopper Low Level alarm. (All other alarms audible and visual are not accessible for deactivation). The same button toggles between ON/OFF. SCALE SET-UP Zero Scale, Calibrate Scale and set Batch size. The scale calibration is factory set, should it become necessary to recalibrate the scale perform the following steps. 1. From the Parameters screen select Scale Set-up; the Scale Set-up screen will be displayed. 2. Obtain an approved or a known weight, preferably a two (2) lb. or 1 kg. 3. Confirm the scale is empty and properly positioned in its cradle. (If the scale is improperly positioned, undue stress will be applied to the load cells and the calibration will be inaccurate.) 4. Zero the scale by selecting the Zero Scale touch button. The Touch Screen display and the red LED on the control panel face should display 000.00. Should there be a plus (+) or minus (-) value displayed, check the scale for correct position and/or obstructions on the cradle. 5. Select the scale numerical button located to the right of the Calibrate Scale button; a numerical keypad will be displayed. Enter the approved or known weight value. You have the option of calibration in lbs or kg. To select lbs or kg touch the button showing lbs or kg, the same button toggles between lbs and kg. 6. Place the weight onto the scale and select the Calibrate Scale button. (Note, the Calibrate Scale button must hi-lite when selected to acknowledge data entry.) The Touch Screen and LED will display the approved or known weight value, the scale is now calibrated. To confirm calibration, place and remove the weight onto the scale a few times, the Touch Screen and LED will display the value of the weight when on the scale and zero when the weight is removed. 7. Select the Batch Size numerical button (located below the scale numerical button) and enter the applicable batch size through the numerical keypad. Note, the batch size of each model can be reduced or increased to 50% of the specific model. Example; a 2lb scale can be reduced to 1lb or smaller and increased to a maximum or 3 lbs. When implementing this option special attention must be paid to the bulk densities of materials being blended in reference to each model scale volume capacity. Scale adjustment will also affect the blending rate of each blender. Consult the factory for further information. LANGUAGE Four languages are available for operation, English, French, Spanish and German. To select the preferable operating language, on the Parameters screen touch the Language button to toggle between each of the preset languages. 23

MANUAL OPERATIONS The GXB Series 4 control has the ability to manually operate each dispensing valve, discharge the scale, discharge the mixer and operate the mixer motor. Also, all pneumatic operated components; discharge pinch valves, scale and mixer discharge can be activated by using the manual push buttons located on each solenoid valve. Each solenoid valve is identified for its component. Manual Operation with Solenoid Valves. Discharge Pinch Valves To OPEN each discharge pinch valve push in the button and hold, to CLOSE release the button. Each button can be locked in the Open or Close position. To use the lock option, push in the button and rotate clockwise a ½ turn, the button will remain in the IN position and the discharge pinch valve will remain open. To release rotate the button clockwise a ½ turn, the button will return to the OUT position and the discharge pinch valve will close. Scale discharge Loc ate the solenoid identified SCALE. To OPEN the scale push in the button and hold, to CLOSE release the button. Each button can be locked in the Open or Close position. To use the lock option, push in the button and rotate clockwise a ¼ turn, the button will remain in the IN position and the scale will remain open. To release rotate the button clockwise a ½ turn, the button will return to the OUT position and the scale will close. Mixer discharge Locate the solenoid identified MIXER. To OPEN the mixer push in the button and hold, to CLOSE release the button. Each button can be locked in the Open or Close position. To use the lock option, push in the button and rotate clockwise a ½ turn, the button will remain in the IN position and the mixer will remain open. To release rotate the button clockwise a ½ turn, the button will return to the OUT position and the mixer will close. Manual Operation with GXB 4 Control From the Main Menu select Manual, to access the Manual screen. Discharge Pinch Valves To OPEN a discharge pinch valve touch and retain your finger on the desired numerical identified hopper. To CLOSE the discharge pinch valve remove your finger. Sca le discharge To OPEN the scale, touch and retain your finger on the Dump Scale button. To CLOSE the scale, remove your finger. Mix er discharge To OPEN the mixer, touch and retain your finger on the Dump Mixer button. To CLOSE the mixer, remove your finger. Operate Mixer Motor To rotate the mixer blade, touch and retain your finger on the Mixer button. To stop rotation remove your finger. 24

REPORTS The GXB Series 4 control provides a variety of reports for documentation of each blender s production. All reports are identified with Date, Time, Model and Serial number for authenticity. The variety consists of; Cycle report, Diagnostic report, Cycle & Diagnostic combination report, Batch report, Inventory report and Formulas stored report. The Cycle and/or Diagnostic are very useful re ports; they offer quick reference to the operator for review of each blender running accuracies and material usage from batch to batch. All reports data is collected by continuous scan of all conditions and maintained in a reports data file, which is used, to generate each report as requested. See following sample reports. CYCLE REPORT The 1 st. line identifies the type of report, date and time. The 2 nd line identifies the model and serial number of the blender and the 3 rd line identifies the formula the report is for. th The 4 th line identifies the materials the formula consists of. The 5 line identifies the percentage of each material in the formula and column headings for the total batch and the time the batch/cycle was performed. Below these lines are 15 columns of 25 lines; these lines are the results of each batch/cycle and a subtotal line of the 25 batch/cycles completed. The first column is the number of each Batch/Cycle, the second column is the percentage of the 1 st material required, Virgin; the third column is the weight of the virgin material dispensed. The fourth is the percentage of the 2 nd material, ABS; the fifth is the weight of the ABS material dispensed. The sixth is the percentage of the 3 rd material, Acrylic; the seventh is the weight of the Acrylic material dispensed. The eight is the percentage of the 4 th material, Additive; the ninth is the weight of the 25

Additive material dispensed. The tenth is the percentage of the 5 th material, Additive*2; the eleventh is the weight of the Additive*2 material dispensed. The twelfth is the percentage of the 6 th material, Color*; the thirteenth is the weight of the Color* material dispensed. The fourteenth is the total weight of the batch/cycle completed and the fifteenth is the time the batch/cycle is completed. The Cycle report can be programmed to print batching intervals and subtotals, for example the batching can be printed every 10 th cycle and the subtotal every 25 th cycle. This setting allows the operator to monitor the running condition of the blender while utilizing less paper. To program the Cycle report, follow these steps: 1. From the Main Menu select Reports. From the Reports screen select Cycle. 2. The Cycle Report will be displayed. 3. The Continuous command must be set to ON. Select the Continuous OFF button located to the right of Cycle Report, the same button toggles On and Off. 4. To set the cycle interval select the numerical button located to the right of Interval, from the popup numerical keypad enter the interval number required. Example 10. 5. To set the Subtotal select the number button located to the right of Subtotal. From the pop-up numerical keypad enter the subtotal number required. Example 25. Reports will be printed in the format shown on page 23, with each 10 th completed cycle and the accumulative subtotal of each 25 th completed. Example, the first cycle print will be @ #10, the second @ #20,the third @ #30 etc. and the first subtotal @ #25 cycle, the second @ #50, the third @ # 75 etc. 26

DIAGNOSTIC REPORT The Diagnostic report shows the values of each material dispensed in grams providing the operator with information of cycle accuracies from batch to batch. Models, Serial number, Date and Time are all part of each report. (DSP data is displayed at the bottom left of the screen). Material Name Material flow (numerical value) Target weight requested Actual weight dispensed +/- Deviation dispensed To program the Diagnostic report, follow these steps: 1. From the Cycle Report screen the Continuous command must be set to ON. Select the Continuous OFF button located to the right of Diagnostic Report, the same button toggles On and Off. 2. To set the cycle interval select the numerical button located to the right of Interval, from the popup numerical keypad enter the interval number required. Example 10. The control will print each 10 th completed cycle. Example, the first cycle print will be @ #10, the second @ #20,the third @ #30 etc. Reports will be printed in the format shown. 27

NOTE: Both Diagnostic and Cycle reports can be printed separately or in combination with each other. To print both reports, select Cycle and Diagnostic Reports, Continuous ON. Intervals printing and Subtotals will function (when programmed) as previously described. The combination report will be printed in the format as shown below: 28

BATCH REPORT The Batch report shows the total amount and error of each material processed in a specific formula, including all its revised formulas. Models, Serial number, Date and Time are all part of each report. To print the Batch Report, follow these steps: 1. From the Main Menu select the Reports button. 2. From the Reports screen select the Batches button. A numerical keypad will be displayed, enter the number of the formula you require printing. The formula and all revisions will be printed. Reports will be printed in the format shown. The first column consists of the materials processed. The second column consists of the requested percentage of each material processed. The third column consists of the actual percentage of each material processed. The fourth column consists of the total amount of each material processed in their set value; ounces, grams, pounds or kilograms. Also the total of all materials processed. The fifth column consists of the total error in percentage of each material processed. 29

FORMULA REPORT All formulas and/or selected formulas stored in memory can be printed. The Formula report shows specifications of each formula, including all its revised formulas. Models, Serial number, Date and Time are all part of each report. To print the Formula report, follow these steps: 1. From the Main Menu select the Reports button. 2. From Reports screen select formula. 3. From the Formula Reports screen you can print a selected formula by navigating thru the list of formulas using the up and down scroll buttons, when the formula required is identified select the print button. 4. To print a specific range of formulas identify the first formula by navigating thru the list of formulas using the up and down scroll buttons, select the Set First button. Identify the last formula by navigating thru the list of formulas using the up and down scroll buttons, select the Set Last button. Select the print button, the selected formulas and all revisions will be printed. 5. To quickly find a formula when numerous formulas are stored select the Formula button, a numerical keypad will be displayed, enter the number of the formula you require, it will be displayed in the list ready for further selections. 6. To view a formula select the required formula then select the View button. Reports will be printed in the format shown. 30

INVENTORY REPORT All materials usage stored in memory can be viewed and/or printed. 1. To view or print materials inventory select Reports from the Main Menu. 2. From the Reports screen select Inventory. On the Inventory Report screen you have the selection of viewing, printing and deleting the materials inventory. 3. To view each material usage from the total material list, scroll up and down (as required) by selecting the Next button or the Prev. button. 4. To print the reports select the Print button. 5. To delete the inventory select the Delete button. Note: When Delete is selected a query will be displayed requesting confirmation that the operator does indeed wish to delete the inventory. All materials inventory will be deleted when selected. Deletion of individual materials is not available. PROCEED WITH CAUTION. Reports will be printed in the format shown. All of the afore mentioned reports requires a parallel printer connected to the printer port of the control panel. 31

MIXER, SET-UP The mixing time is factory set at 10 seconds. In most applications this time period will produce a homogenous mix, exceptions to this would be related to the bulk densities, static electricity and level of material in the mixing chamber. When the blender is running close to or at its maximum capacity it may be beneficial to select the mode for Continuous Mix. Note: added mix time can result in materials separation. Should you need to increase the time follow these steps: 1. From the Main Menu select Mixer. 2. From the Mixer Set-up screen select the Mixing Time numerical button. decrease the throughput rate and cause material separation. Continuous Mix Mode In the Continuous Mix mode the mixer will begin to rotate when a batching cycle is started and continue as long as the blender is in operation. Note: It is recommended the Continuous Mix mode be used when Gaylord, surge bin or hopper filling is required. 4. From the Mixer Set-up screen select the Timed Mix button, the Timed Mix will change to Continuous Mix. The same button toggles each mode. 3. From the numerical keypad select the new value and touch the Save button to enter your selection. The Mixer Set-up screen will display the new mixing time value. Timed Mix Mode In the Timed mix mode the mixer will begin to rotate after the weighed material(s) is discharged from the scale into the mixer and continue until the mixing time value has elapsed. (Upon scale discharge the material level must be above the mixer sensor.)note:excessive mixing time will A positive Open/Close mixer discharge valve is provided when blending materials for storage in; a collection bin, a Gaylord, a Surge Bin and/or Hopper. When in the Continuous Mix mode the discharge valves opens after the mixing time value has elapsed. The valve closes when the mixed material is discharged to a level below the mixer sensor. A manual slide gate is provided for machine feed throat mount applications. 32

TROUBLE SHOOTING GUIDE PROBLEM POSSIBLE CAUSE SOLUTION No Power Power cord not connected. Connect power cord. Fuse or circuit breaker has failed. Replace fuse or reset circuit breaker. Material did not Material not selected in formula. Reprogram formula to include material. dispense. Air failure. Re-establish air supply. Dispense pneumatic valve cylinder Replace dispense valve pneumatic failed. cylinder. Obstruction in hopper. Remove obstruction. Dispense pneumatic solenoid valve Replace pneumatic dispense solenoid and/or coil failed. valve and/or coil. Individual materials Insufficient Material Feed Alarm Increase Material Feed Alarm time dispense alarm time value. value. Maximum 60 seconds. Page #21. activated. Plugged material feed throat. Remove obstruction. Dispense pneumatic valve cylinder Replace dispense valve pneumatic failed. cylinder. Dispense pneumatic solenoid valve Replace dispense pneumatic solenoid and/or coil failed. valve and/or coil. Batch time alarm Insufficient Batch time alarm Increase Batch time alarm value. activated. value. Maximum 255 seconds. Page #21. Low air pressure supply. Increase & maintain 60 P.S.I. Scale out of calibration. Recalibrate scale. Page #22. Scale does not zero, Obstruction to load cell arms. Remove obstruction and recalibrate. displays +/0 value Scale out of calibration. Recalibrate scale. Page #22. when empty. Defective load cell. Replace load cell and recalibrate scale. Scale discharge valve Defective pneumatic discharge Replace pneumatic discharge valve does not Open or valve cylinder. cylinder. Close. Disconnected air supply. Reconnect air supply. Defective solenoid valve and/or Replace solenoid valve and/or coil. coil. Mixer failure. Defective motor. Replace motor. Defective electrical relay. Replace electrical relay. Damaged mixer agitator. Replace mixer agitator. Defective mixer access door safety Replace mixer access door safety switch. switch. Mixer discharge Defective discharge pneuma tic Replace discharge pneumatic cylinder. failure. cylinder. Defective pneumatic solenoid valve Replace pneumatic solenoid valve and/or coil. and/or coil. Air Flow is low. Adjust airflow control fitting. Disconnected air supply. Reconnect air supply. Touch screen white Contrast too bright or dark. Adjust bright or dark contrast buttons. out or black out. Page #11. Blender stopped while Power failure. Restore power. in operation. (Stop Pause mode selected. Deselect pause mode. Page #9, item #5. function not selected). Preset Batch count completed. See page #10. Blender in No Demand mode. No Demand mode resets automatically when mixer discharges. Mixer over fills. Level sensor out of adjustment. Readjust sensor. Defective mixer level sensor. Replace mixer level sensor. Running formula SMART Mode activated. See page #18 and follow instructions. changed to 100% Virgin material. For further assistance contact your supplier or the factory. 33

MAINTENANCE Your GXB Series 4 blender is constructed of a heavy-duty frame; hoppers, scale and load cell assemblies all to maintain a sturdy integral secure structure. All mechanical and electrical components utilized are common industrial types. Standard maintenance practices are required. Th e following is recommended for the items listed: Electrical Control Panel Keep panel door closed to maintain a dust free condition. Do not use sharp or metal object s to operate the touch screen. To p revent static conditions do not lay or fix nylon material conveying hose in close proximity of the panel. Do not locate the control panel close to any heat source such as metering heater barr els, motors and electrical heaters. Load cell and cradle assembly Although the load cells ar e delicate instruments the assembly is designed to withstand a nd protect each load cell from most adverse conditions, however excessive abuse is not rec ommended. Should load cells be subjected to excessive force due to cradle misalignment or excessive weight applied, the ability t o accurately weigh the materials will be greatly affected. Periodically check that all bolts are secure. Should any bolts require replacement use the sa me as the manufacturer provided. Scale hopper It is important to maintain your scale hopp er free from damage. Do not drop or place heavy objects on the scale hopper. Should the scale hopper become irregular in shape the ability to accurately weigh the materials will be greatly affected. Contact the factory for a proper replacement. To prope rly remove the scale lift up and pull out towards you. Scale hopper dischar ge gate - It is important to maintain your scale hopper discharge assembly free from damage. Shoul d the scale hopper discharge assembl y become irregular in shape, the ability to effectively o pen and close will be grea tly affected. Contact the factory for a proper replacement. Mixing agitator It is important to maintain your mixer agitator free from damage. Do not drop or place heavy objects on the mixer agitator. Should the mixer agitator become irregular in shape the ability to properly mix the materials will be greatly a ffected. Contact the factory for a proper replacement. Mixer motor Your blender is provided with a fan-cooled motor (fan located at the rear of the motor). It is important to keep the fan clear of any obstruction s preventing proper air circulation, which may cause the motor to overheat and result in motor burn out. Mixer discharge Your blender is provided with a pneumatic positive open and close mixer discharge assembly. Perio dically inspect the assembly for build-up of material stringers, which will prevent the assembly from operating efficiently. Remove all obstructions. Compressed Air supply It is important to maintain your a ir system free of water and oil. The air pressure regulator is provided with a water trap, drain periodically. Should the solenoid stack become contaminated wi th water and oil the performance of the blender will be affected and may result in solenoid( s) failure. Pinch Valve assemblies Each pinch valve is a precision assembly and will withstand a variety of adverse conditions. However to ensure efficient performance it is important to keep the pinch valve free of excess build-up of materials dust; stringers, regrind granular and pellets. Periodically inspect and clean each valve assembly. Pinch Valve sleeves Each pinch valve sleeve is m ade of a silicone compound which will withstand a heat range of up to 400 Deg. F. Inspect each pinch valve sleeve once every 6 month period and if ne cessary replace with an original manufactur er replacement only. Th e GXB Series 4 is designe d to give you years of trouble free operation. Regular maintenance is required to prevent unnecessary failures and maintain efficient machine operation. Failure to adhere to the above procedures will void all warranties. For further assistance contact your supplier or the factory. 34

All specifications are subject to change without notice. 35

All specifications are subject to change without notice. 36

All specifications are subject to change without notice 37

All specifications are subject to change without notice. 38

All specifications are subject to change without notice. 39

Dimensions in inches (X 25.4 = mm) All specifications are subject to change without notice. 40