Graco 332092B User's Manual
Contents
1. Instructions RADO 332092B Dispensit 1230 EN Dispense Valve en Important Safety Instructions Read all warnings and instructions in this manual Save these instructions PROVEN QUALITY LEADING TECHNOLOGY WELCOME Thank you for purchasing a Dispensit 1230 Series Positive Displacement Dispense Valve This manual explains the steps for proper setup operation and maintenance of the dispense valve This manual is an overview of the valve and how it works You have also received where applicable other manufacturer s guides and technical references that detail the specifics of their particular products which have been integrated into the dispense valve The information in this manual is designed to help you get the most use out of your dispense valve This manual is written with the ease of understanding for not only you but maintenance personnel and management Support tasks and procedures in this manual require that you have some mechanical knowledge and a working knowledge of basic pneumatics If you do not have this basic knowledge obtain the proper training before attempting any of the tasks and or procedures detailed in this manual Only properly trained authorized personnel should operate or maintain this dispense valve It is important that you keep this manual in an easily accessible place for future reference GRACO Table of Contents WOO PRA A So o Po o A 4 SR lia aa o U eps asset sca UoPA U monet2. 2 Attach the Wet Head Assembly to the bottom of the Base Section by connecting the Metering Rod 14 to the Rod Assembly which is extending through the bottom of the Base Section and sliding the Wet Head into the Base Section Square up the two sections with the diaphragm assembly facing the front and secure them together with two BHCS 9 Figure 17 Wet Head Assembly The Metering Rod must be attached to the Rod Assembly before the Wet Head Section is assembled to the Base Section of the valve 3 Connect air lines reset adjustment knob cycle valve for leaks and connect material and purge valve The valve is ready to resume production 16 7 GRACO Operation Adjustments Adjust the Dispense Head for proper operation as follows See step 6 for volume adjustment 1 Make sure that all the Dispense Head pneumatic connections are in place 2 Fill wet cup if equipped with compatible material 3 Connect the material for dispensing Position a container to catch the dispensed material Cycle the Dispense Head until you are getting consistent dispensing no inconsistencies in the dispensed material symmetrical deposit shape 4 Weigh at measure a sample of the dispensed material to see if the volume is correct 5 Continue to observe the cycling of the Dispense Head to see if the material has caused any change in the dispense and reload strokes 6 To adjust the volume loosen the set screw on the shot adjustment and change t
3. input devices and energizes output devices A PLC also gives you the ability to manipulate how and when the output devices are energized by the information being sent by the input devices PNEUMATIC a devise which is being controlled by the use of compressed air POSITIVE DISPLACEMENT a process of where a known precise volume of material is displaced dispensed during a given motion of the dispense valve POWER HEAD ASSEMBLY the top section of the dispense valve which controls the length of stroke and the volume of material being dispensed PRIMARY AIR SOURCE the main supply of air pressure which is being used to operate the dispense valve PSI pounds of pressure per square inch QUALIFIED PERSONNEL a person who by possession of a recognized degree or certificate of professional training or who by extensive knowledge training and experience has successfully demonstrated the ability to solve problems related to the subject matter and work ANSI B30 2 1983 RESIDUAL PRESSURE pressure that is still in the material or airlines that has not been reduced even though the primary source of the pressure has been turned off RHMS round head machine screw ROBOTIC MOTION SYSTEM acomplex device which uses robotic arms to precisely move the dispense valve or other components about the dispense valve SEAL PLATE CUP a block on each side of the body used to lubricate the sides of the spool SHCS socket head cap screw SOLENOID VALV
4. les procedures concern es Graco Information For the latest information about Graco products visit www graco com TO PLACE AN ORDER contact your Graco distributor or call to identify the nearest distributor Phone 612 623 6921 or Toll Free 1 800 746 1334 Fax 330 966 3006 All written and visual data contained in this document reflects the latest product information available at the time of publication Graco reserves the right to make changes at any time without notice For patent information see www graco com patents Original Instructions This manual contains English MM 332092 Graco Headquarters Minneapolis International Offices Belgium China Japan Korea GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 USA Copyright 2010 Graco Inc All Graco manufacturing locations are registered to ISO 9001 www graco com Revised September 2014
5. remove the incoming air line from the diaphragm Do not break the plastic barbs e Move the metering rod to its lower position by setting the maximum stroke on the adjustment knob e Remove the dispense valve by removing the two 8 32 machine screws from the front of the valve e Carefully slide the metering head from the slot in the drive piston e Take the valve to a clean work area for disassembly MOUNTING SCREWS 6 2 Required Tooling The following tools will be required to rebuild either dispense valve e 1 8 Straight Screwdriver Hooked Dental Pick 1 4 Open End Box Wrench Internal Snap Ring Pliers e 3 32 Allen Wrench e 5 64 Allen Wrench Small Bar Clamp GRACO Valve Disassembly Cont d 6 3 Main Sections The 1230 Valve can first be broken down into two main sections the Power Head and the Wet Head For simplicity sake this manual will describe the procedures for a valve containing a luer lock needle and adapter To disassemble the 1230 into its main sections refer to figure 6 and follow these steps 1 Remove the Luer Lock Adapter 24 and with the Luer Lock Needle 25 from the bottom of the Valve 2 Unscrew the Adjustment Knob 1 until it reaches the top of the scale then press the Adjustment Knob down until it bottoms out 3 Remove the two lower 8 32 BHCS 9 from the front of the Valve and pull the Wet Head B section from the Base 8 separate the Meterin
6. valve is controlled by an electrical system e g solenoid valve or PLC the electrical system should be placed in a position where the air supply to the dispense valve is OFF All personnel working with this system should observe the following precautionary guidelines Abide by all OSHA and NEC safety guidelines All operators at minimum must have proper instruction and practice in the use of pneumatics All maintenance personnel must have proper instruction and practice in the proper operation of this dispense valve Observe all company safety guidelines pertaining to dispensing equipment Remove watches rings and all other jewelry If the unit is to be moved or serviced wear protective eyewear and depending on the material used any necessary protective clothing e g gloves long sleeved shirt or smock OOO CAUTION Always be alert of other potential hazards within your work area GRACO MATE MAX 60 Main Components As figure 2 shows the main components of the 1230 dispense valve are easily recognized specifics refer to p11 1 APPENDIX A VALVE SPECIFICATIONS POWE AS 2 HEA cle PSI MATERIAL INLE T DIA P HRAGM CH MATE SAL OQUTLE eee NLE wI TH EOR SHOTI A er LINEAR SHUI SCALE A UY O O O O A O
7. E an electrical devise used for turning the flow of air on and off SHCS socket head cap screw U CUP a pneumatic seal used in low pressure low speed situations VISCOSITY a numerical measure of the degree to which a fluid resists flow under an applied force Wet Cup Place to put compatible lubricant fluid to keep air from being drawn into the material chamber and to lubricate seals WET HEAD ASSEMBLY the lower section of the dispense valve which is where the material flow takers place Z AXIS a pneumatic slide which moves the dispense valve down onto a part for dispensing and back up into a neutral position 20 7 GRACO lt N Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use With the exception of any special extended or limited warranty published by Graco Graco will for a period of twelve months from the date of sale repair or replace any part of the equipment determined by Graco to be defective This warranty applies only when the equipment is installed operated and maintained in accordance with Graco s written recommendations This warranty does not cover and Graco shall not be liable for general wear and tear or any malfunction damage or wear caused by faulty installation misapplication abrasion corrosion inadequ
8. O _ ME ING DJUSIMEN T PNEUMATIC SUPPLY ROD AND ACCESS TO THE WE ASS _ E V For more valve WET CUP FOR FILLING Figure 2 Main Components The main components of the 1230 dispense valve are easily recognizable and accessible Detailed drawings can be found in the back of this manual The 1230 standard valve components are manufactured of high quality and wear resistant plastic and the metering rod is manufactured of high quality stainless steel Other materials are available for different material compatibilities Refer to the Optional Equipment section for a complete list of available component materials GRACO Valve Operation Figure 3 is an illustrated description of the sequential steps in the cycling of the 1230 dispense valves AIR IN AIR IN Material fills the valve through Air is supplied to the dispense the material inlet port located on port which moves the metering the inlet block and fills the spool rod down and dispense chamber AIR IN AIR IN thi Air is shifted back to the fill position The metering rod moves The metering rod moves down pushing material through the diaphragm check valve and out the dispense needle back up drawing material through the inlet port Fig
9. T BLOCK a component between the body of the valve and the needle block where the material enters the dispense valve MAINTENANCE PERSONNEL an specific individual or group who s properly trained to fix and or adjust a particular piece s of equipment when problems occur METERING ROD acomponent which draws material into the metering chamber and presses material out of the metering chamber METERING CHAMBER an area where a certain amount of material is stored within the dispense valve before dispensing MPa a unit of measure which is equal to 1000 Pascals 1Pa 1 Newton of weight per square meter NEC National Electrical Code a publication put out by the National Fire Protection Association which contains guidelines for proper installations of electrical products in order to safeguard personnel and property NEEDLE BLOCK a component on the bottom of the dispense valve where the material is dispensed from The needle block may consist of a simple single needle or a complex configuration of multiple different needle sizes and lengths 19 7 GRACO Glossary of Terms Cont d OSHA Occupational Safety and Health Administration a division of the U S Department of Labor responsible for the regulation of workplace safety OSHA regulations often follow ANSI standards which become law when adopted by OSHA and must be followed PLC PROGRAMMABLE LOGIC CONTROLLER an electronic device used to decipher electrical signals from
10. ate or improper maintenance negligence accident tampering or substitution of non Graco component parts Nor shall Graco be liable for malfunction damage or wear caused by the incompatibility of Graco equipment with structures accessories equipment or materials not supplied by Graco or the improper design manufacture installation operation or maintenance of structures accessories equipment or materials not supplied by Graco This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect If the claimed defect is verified Graco will repair or replace free of charge any defective parts The equipment will be returned to the original purchaser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE Graco s sole obligation and buyer s sole remedy for any breach of warranty shall be as set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or any other inci
11. cddananias news bnche ncasateseenidieuaconetnes 5 Mal Components escindida il Vawe Opera OI OPA PROPONE Eu PO o ERES A 8 Soi A e E A 0 io PO 9 EIA o A PPP oo E E 10 nn o 14 Vale ASE MDI adi ba 16 Operan Ad USNE NiS AO APRA O PON e E a aaa Ea E Era 17 Troubles OO NS esa o rE eed esaa eat 17 Glossary PPP E CO OO E 19 raco Standard W arriero erecta 20 Craco IMMOPIMALION spasa E e O A AETA 20 3 GRACO Introduction This manual is for the 1230 Series Positive Displacement Dispense Valves designed and manufactured by Dispensit This manual addresses the setup operation maintenance and adjustment of all aspects of the valve which will be useful for management support technicians as well as the operator Its design also permits quick change out of the wetted module wet head allowing the drive module power head to remain permanently fixed to its mounting assuring a minimal downtime for material change or replacement The valve has a linear shot adjustment scale which provides volumetric consistency in shot applications The 1230 made of corrosion resistant plastic and has either plastic or stainless steel metering rods and is offered in three different Metering Rod sizes and volume output ranges The 125 valve has a dispense range of 0 010cc s 0 126cc s the 188 valve has a dispense range of 0 022cc s 0 283cc s and the 250 valve has a dispense range of 0 040cc s 0 503cc s The 1230 will allow the operator to pla
12. ce a precise amount of material on a specific part with excellent repeatability with cycle times as fast as 1 5 shots per second depending on the application This valve is capable of handling pressures up to 60psi 41 MPa and non metallic material viscosities ranging from water type materials to medium viscosity fluxes Material can be supplied by means of different types of material transfer systems ranging from low pressure syringes or cartridges to 55 Gallon transfer pump Systems The 1230 s modular design and lightweight allow it to easily integrate into a variety of applications The valve is most commonly mounted vertically with two 8 32 machine screws however it may be necessary to mount it at other angles depending on the application This valve has a variety of uses ranging from a simple bench top dispense system to robotic cells or conveyorized systems This valve can dispense through a single luer lock needle or a custom designed needle block configuration Safety considerations are an extremely important element in the proper operation of this dispense valve Actively thinking about the safety of yourself and others as well as the condition of the equipment is of most importance Regard all warnings cautions and notices that are listed on the left margins throughout this manual and in any accompanying literature CAUTION To avoid damage to property equipment and or personal injury please adhere to common safet
13. dental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale GRACO MAKES NO WARRANTY AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IN CONNECTION WITH ACCESSORIES EQUIPMENT MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO These items sold but not manufactured by Graco such as electric motors switches hose etc are subject to the warranty if any of their manufacturer Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties In no event will Graco be liable for indirect incidental special or consequential damages resulting from Graco supplying equipment hereunder or the furnishing performance or use of any products or other goods sold hereto whether due to a breach of contract breach of warranty the negligence of Graco or otherwise FOR GRACO CANADA CUSTOMERS The Parties acknowledge that they have required that the present document as well as all documents notices and legal proceedings entered into given or instituted pursuant hereto or relating directly or indirectly hereto be drawn up in English Les parties reconnaissent avoir convenu que la r daction du pr sente document sera en Anglais ainsi que tous documents avis et proc dures judiciaires ex cut s donn s ou intent s a la suite de ou en rapport directement ou indirectement avec
14. ed as needed 3 See problem Valve Locked Up below 1 Open any in line restrictions so material flows smoothly to the dispense valve 2 Adjust air pressure to proper determined setting which is needed to dispense the material involved 3 Adjust material output pressure to proper determined setting which is needed to dispense the material involved 4 Replace the dispense needle with a new one 5 Increase the stroke of the Metering Rod to get more material 1 Replace the material supply 2 Replace the material supply 3 Controller timing needs to be adjusted 4 Adjust as needed as per manufacturers recommendations 1 Disassemble the Drive Cylinder Assembly and the End Cap Assemblies lubricate align and reassemble 1 Replace the material supply 2 Replace Metering Rod 3 Rebuild valve with a new seal kit 4 Replace the diaphragm 1 Make sure the wetted components and spool sleeve assembly are compatible with material Refer to p5 2 Optional Equipment 2 Disassemble clean and or rebuild valve Use only NON lubricated air with this valve 3 Increase air pressure Material build upon Material getting past the upper seal due to 1 Rebuild the valve and pay special attention metering rod a lack of fluid in the wet cup to the metering rod 18 GRACO Glossary of Terms Not all terms listed below are part of your system ANSI American National Standards Institute an as
15. from normal wear Following are some of the possible difficulties and likely causes that may arise with the valve If these do not correct the situation call the technical service department at Dispensit Possible Cause Nothing Happens Valve Cycles but Material is Not Dispensed Irregular Dispense Sluggish Cycle Time Valve Drools Dispense Valve is Locked Up 1 Pneumatic or electrical problems with the controller or controlling device 2 Foot switch or cycle start switch are not working properly 3 Valve is locked up 1 Material line is closed off at the valve 2 Low air pressure on the material transfer system 3 Low material pressure setting on material transfer system 4 Material is cured in the needle or needle block 5 Not enough M R stroke 1 Inconsistent material cured dried or separated 2 Air in the material 3 Valve is cycling too fast not allowing the metering rod chamber to fill 4 Cycle timing on the controller or controlling device is improperly set Pistons and or cylinder walls are poorly lubricated 1 Air in the material 2 Worn Metering Rod 3 Worn seals 4 Worn diaphragm 1 Wrong material for this particular valve design 2 Oil buildup on cylinder walls from air supply 3 Too low air pressure on valve 1 Have the controller or controlling devices checked and serviced as needed 2 Have the foot switch or cycle start switch checked and servic
16. g Rod from the Piston Rod and remove the Wet Head 4 Remove the two upper 8 32 BHCS from the front of the Valve and pull the Power Head A from the Base Figure 6 Main Sections The 1230 is built with three main components the Power Head Wet Head and the Base Section The three sections can easily be seperated and each can be easily disassembled 11 7 GRACO Valve Disassembly Cont d 6 4 Power Head Section Typically the power head section will only require servicing if material leaks into the air chamber or the air chamber is leaking pressurized air To disassemble the Power Head Section follow these steps It is not necessary to remove the air lines if still attached Refer to figure 7 for part orientation 1 Loosen the Set Screw 13 on the Adjustment Knob 1 and remove the Adjustment Knob by turning it counter clockwise until it comes off the Rod Assembly 4 2 Remove the Internal Snap Ring 2 from the top of the Power Head 3 Remove the Rod Assembly by pulling it out the top of the Power Head The Insert 12 will come out with the Rod Assembly 4 Remove and discard the Pressure Seal 11 and O Ring 3 from the Insert 5 Remove and discard the Pressure Seal 6 from the Rod Assembly 6 Remove and discard the U Cup Seal 7 from the bottom of the Power Head Body 5 02 Oy es a a q NY Se Ch Figure 7 Power Head Components The Power Head section
17. he volume by turning shot adjustment raise the collar to increase volume Snug the set screw and reconnect the air line after adjusting the stroke adjustment collar 7 Repeat the above steps until you obtain the correct stroke and volume 8 Adjust the operation timing so that the Dispense Head is able to dispense completely before moving the part a VLA Vdd CO A ADJUSTMENT IISA LINEAR DAHUT SUALE CE AN A PNEUMATIC SUPPLY 1555050505053 gt ESAS ASAS 8 E m TA cs FE A a EP 5 ZNA POWER HEAD ASSEMBLY OJO EE ae SP A A a NENA To E SESS ANNAN uN MATERIAL INLET METERING ROD MAX 60 PSI AND ACCESS TO THE WET CUP FOR FILLING IEX Vio O O E mm q Sa E Es Bee J E a MES WE MATERIAL INLET WIH DIAPHRAGM CHECK MET HEAD ASSEMBLY EA AE A SP A SP as a A S vt SS SS O MATERIAL OUTLET SS A 17 7 GRACO Troubleshooting Although good housekeeping preventive maintenance and proper operating procedures will lengthen the life of the valve all mechanical devices will develop problems
18. ith a liberal amount of KRYTOX lubricant included in the Seal Kit Assemble item in the reverse order per figure 8 Figure 9 Rod Assembly Figure 10 Power Head Figure 11 Diaphragm Seal Installation Seal Installation Seal Installation 14 GRACO Subassemblies Cont d 7 2 Seal Replacement 7 2 2 Wet Head Install a High Pressure Seal 17 with the O Ring side facing in into the smaller pocket in the top of the Wet Head 18 Place the plastic Washer 16 over the High Pressure Seal and gently press the two components into place Refer to figure 12 for the proper component orientation Install the internal Snap Ring 15 into the groove above the plastic Washer Lubricate inside if seals and Insert the Metering Rod 14 into the top of the Wet Head Gently press the Metering Rod in until it just passes the High Pressure Seal The opposite end of the Metering Rod needs to extend as far as possible for the final assembly Figure 12 Wet Head Sea Installation Lay the Wet Head on its side with the diaphragm cavity facing up as seen in figure 13 Making sure that the surface is clean insert the Diaphragm 22 into the pocket Place the O Ring 21 then the Diaphragm Insert 20 followed by the internal Snap Ring 15 on top of the Diaphragm To install the Snap Ring place a 10 32 x 1 0 SHCS into the insert 20 then use a small Bar Clamp with a soft protective material between the clamp and Wet Head
19. l flows will purge the 1230 valve 5 2 Plastic Metering Rod Use of a high quality wear resistant plastic metering rod provides a wetted section Wet Head free of metallic components Such a configuration can be beneficial for applications handling especially strong acids certain fluxes and for anaerobic materials thread lockers 5 3 Needle Blocks The 1230 dispense valve has the option of dispensing material through a single luer lock needle of various gauges or a custom designed multi needle block as illustrated in figure 5 An adapter block is used to accommodate custom designed single or multiple needle dispense blocks for applications requiring precise needle lengths or more than one dispense location or height CUSTOM ADAP IER NEEDLE BLOC FITS INTO BOTTOM eh A ASSFEMR OF VALY FAs sd la MB 5 i 5 ee eee Figure 5 Adapter with Multi Needle Block Assembly GRACO Valve Disassembly 6 1 Removing the Valve To remove the valve from its work position requires a few steps to assure that the valve can be replaced in the same manner Use care when servicing This valve contains plastic components Complete these few steps to remove the dispense valve e Purge residual pressure from material line and then remove the material line from the dispense valve e Carefully
20. of the 1230 dispense valve has a small number of components which makes maintenance easy 12 7 GRACO Valve Disassembly Cont d 6 5 Wet Head Section To disassemble the Wet Head Section follow these steps It is necessary to remove the air line from the diaphragm barb fitting Refer to figure 8 for part orientation 1 Pull the Metering Rod 14 from the top of the Wet Head Section 14 2 Remove the Internal Snap Ring 15 from the top of the Wet Head 3 With a small dull dental pick remove and keep the Washer 16 and remove and discard the High Pressure Seal 17 from the top of the Wet Head Section 4 Remove the Internal Snap Ring 15 which holds the Diaphragm in the Wet Head Section This snap ring is under pressure Use Caution when removing 5 Remove the Diaphragm Insert 20 by pulling it out and then remove and discard the O Ring 21 and the Diaphragm 22 23 Figure 8 Wet Head Components The Wet Head section of the 1230 dispense valve has a small number of components which makes maintenance easy 13 7 GRACO Subassemblies 7 1 Component Cleaning With the valve completely disassembled the individual components can be cleaned Using a solvent or cleaning solution that is compatible with the material dispensed with this valve thoroughly clean all the components The O Rings U Cup Seals and High Pressure Seals should be discarded and replaced Do not discard the
21. plastic Washer 16 or the Diaphragm Insert 20 unless they are being replaced While cleaning the components be sure that all material is removed Cured or old material left in the valve may cause the valve to operate improperly Dry all components and make sure there is no cleaning solution or material film residue left on the components Inspect the metering rod 14 Fig 8 replace if there are any surface imperfections on the metering rod 7 2 Seal Replacement Replacement seals are available in complete kits Each seal kit has all the necessary seals needed to rebuild one valve After the components have been cleaned new seals can be installed cylinders can be lubricated with KRYTOX lubricant included in the Seal Kit and subassemblies can be reassembled as described below 7 2 1 Pressure Head Seals Install one High Pressure Quad Seal 6 onto the Rod Assembly 4 as shown in figure 9 Install the other U Cup 7 into the groove on the inside of the Power Head Body with the open side of the U Cup Seal facing in as shown in figurel0 Likewise using a seal installation tool or small screwdriver with no sharp edges install the smaller U Cup Seal 11 into the groove on the inside of the Insert 12 with the open side of the U Cup Seal facing out and then install the O Ring 3 on the outside of the Insert as shown in figure 11 After installation lubricate the outside of the U Cup Seals w
22. sociation of industry representatives which develops technical standards including safety These standards comprise a consensus from a variety of industries on good practice and design ANSI standard relevant to Dispensit is ANSI RIA R15 06 industrial robots and robot systems AUTHORIZED PERSONNEL properly trained individual who has been given permission from a supervisor or management personnel to operate or service a particular piece of equipment BASE SECTION the center section of the dispense valve which seals the material from coming out the top of the dispense valve body BHCS button head cap screw CC S a volumetric unit of measure DISPENSE VALVE a mechanical devise used to apply a precise amount of a specified material Depending on the specifics the material can be placed in a predetermined location or on a predetermined path on a specified part DRY CYCLE the process of operating the valve under normal working conditions except material is not dispensed This process is done to verify that the valve is cycling correctly before applying material FLOW CONTROL a mechanical devise that controls or restricts the air flow which travels through it Controlling the air flow at both sides of the dispense piston regulates how fast the piston moves up and down HIGH PRESSURE SEAL a type of seal which combines an O ring with a U cup seal This combination provides a superior seal in high and low pressure circumstances INLE
23. to compress the components as figure 14 shows When the components are compressed and the snap ring groove is accessible install the Snap Ring Be sure the Snap Ring is securely installed before removing the bar clamp When the clamp is removed install the Barb Fitting 10 Figure 13 Diaphragm Installation Roll the O Ring 23 over the threads of the Luer Lock Adapter 24 as shown in figure 15 Screw the Adapter into the bottom of the Wet Head until it is snug Do not use PTFE tape on the threads and do not over tighten O Figure 14 Bar Clamp Orienta tion Figure 15 Luer Lock Adapter Installation 15 7 Valve Assembly 8 1 Final Assembly Complete the following steps to assemble the Power Head and Wet Head to the Base Section Refer to figures 16 and 17 for the proper orientation of these parts 1 Attach the Power Head Assembly A to the top of the Base Section 8 by sliding it into the Base section Align the two sections with the cut outs on the same side and secure them together with two BHCS 9 Attach the Adjustment Knob 1 to the threaded end of the Rod Assembly 4 which is protruding from the top of the Power Head After a few turns of the Adjustment Knob 1 press the Rod Assemhlv dawn as far as it will og This will aid in the assemhlv with the Wet Head Assemhlv Figure 16 Power Head Assembly The Power Head Section upper of the 1230 is easily assembled to the Base Section of the valve
24. ure 3 Valve Operation Sequence The 1230 Dispense Valve has a simple fourstep operation Normal Home Shift Dispense and Reload GRACO Optional Equipment 5 1 Controller Operation of the 1230 dispense valve requires the use of a pneumatic cycle sequencing controller Dispensit offers the optional 4134 Pneumatic Controller as seen in figure 4 which when triggered by either a foot switch or toggle switch can control the dispense valve and the optional Dispensit 1105 Z Lift station The 4134 Controller can operate the following e Time cycle speeds Cycle sequencing e Independent air pressure regulators for material reservoir valve cycling and Z Lift operations e Automatic or semi automatic applications CYCLE TIME CYCLE TIME EQ fo e i A TART JODEL 4134 Figure 4 Pneumatic Controller The yellow port will extend the metering rod allowing the valve to dispense material and the green port will retract the metering rod allowing the valve to reload with material The auxiliary port will apply a constant flow of air pressure for the diaphragm check valve The auxiliary port air pressure for the diaphragm check valve is typically set to 5 to 10 psi above material inlet port pressure Lowering the diaphragm check valve air pressure until materia
25. y practices Failure to do so may result in such damage or injury GRACO Safety Precautions This manual provides installation operation and maintenance instructions for Graco Ohio Inc meter mix and dispense machines Read this manual before you install and operate your machine Use your machine only as directed Safety Terms within our manuals Cautions are given where failure to observe the instruction could result in damage to the equipment associated equipment and or process Warnings are given where failure to observe the instruction could result in injury or death to people Some examples follow Safety Labeling on our machinery All our machines carry the following safety labels wherever necessary e Danger Labels indicate an imminently hazardous situation which if not avoided could result in death or serious injury e Warning Labels indicate potentially hazardous situations which if not avoided could result in death or serious injury e Caution Labels indicate an unsafe practice that may result in moderate or minor injury e Notice Labels state a company policy Some examples are DANGER DO NOT OPERATE THIS MACHINE WITH GUARD S DETACHED GRACO Safety Precautions Cont d Dispensit recommends as many companies require that the primary air source to the dispense valve be disconnected before being serviced It is the users responsibility to ensure that the primary air pressure is OFF If the
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