Graco 332094A User's Manual
Contents
1. nnn nnnnnnanennnnnnennnnnnnnnrrnrnrnrsnrnrersrrnrernene 7 Disassembly cesses nn nr 4 Model 710 General Wlustraton aan 8 EE 9 Troubleshno6ling sine kana k ee 10 Model 710 Recommended Spare Parts ccccsccseceeeeeeeeeeeeeseneeeesneees 11 General Guidelines for O rings and U cup Seals 12 V A A a crc tema A nooo a a 13 GENERAL INFORMATION The Model 710 Dispense Valve is an On Off valve designed for a continuous flow of viscous material through a dispense needle in automatic semi automatic or manual applications It is shipped complete with the following Model 710 Dispense Valve Two 3 foot 9 m sections of pneumatic air line Seal Kit Operating and Maintenance Manual SAFETY INFORMATION This product should be used only by employees who have been given appropriate training and safety warnings as set forth in this manual Read completely before operating Toxicity and flammability hazards depend upon the product being dispensed by this unit and the user should take appropriate safety precautions as indicated on the MSDS of the product Always wear Safety glasses ILLUSTRATION REFERENCES Throughout this manual you will find references by illustration item number to the illustrations in the manual The references are indicated by parentheses around a number such as 7 Illustrations represent typical valve configurations The drawings for your exact model are inserted2. es DA onze eat D JA 111 v DEA RAT AV Af hhl ANNs Ze ee gel At K K Jf ha MM ed Ke AM ae an dli hi SM 4 K UM o O GO V OOG AE Oe D SETUP PROCEDURE MOUNTING DISPENSE VALVE Mounting holes are drilled through the valve body The valve may be tilted to a maximum of 60 degrees from the vertical depending on the application AIR CONTROLLER Operation of the Model 710 Dispense Valve requires a controller that can provide the following e Aminimum of 0 5 SCFM 2 3 cm of dry unlubricated air at a minimum pressure of 70 psi 4 8 bar and a maximum of 100 psi 6 9 bar e Time delay capability to allow the valve to cycle e Independent air pressure regulators for material supply and valve operation e Purge capability which is the ability for the operator to pass or not pass air to the Open port on the dispense valve e For semiautomatic or automatic applications a foot switch or other control to cycle the valve e Connection for 16 ID x 25 OD 6 35mm pressure tubing for use between the dispense valve and controller e Connection for a 16 ID x 25 OD 6 35mm pressure tubing for use between the controller and syringe OPERATING PROCEDURES If there are any problems in getting started refer to the Troubleshooting section or call Technical Service at 330 494 1313 DRY SYSTEM CHECKOUT This is an
3. 28 to the controller Perform the Dry System Checkout Material Loading and Wet System Checkout procedures The 710S Dispense Valve is now ready to be placed back in service TROUBLESHOOTING If operating difficulties are encountered review the symptoms below With each problem there are one or more possible causes that should be investigated to resolve the situation NOTHING HAPPENS If absolutely nothing happens when trying to cycle the Dispense Head check the electric pneumatic power Check the footswitch or cycle start switch to be sure it is plugged in VALVE CYCLES NOTHING DISPENSED First try to purge the unit this should fix most situations If it doesn t check to see that there is enough pressure to the reservoir or transfer pump Perhaps the Reservoir Needle path is clogged examine and clear or replace as necessary Consider whether the material could have set up in the system See the Wet System Checkout and Operation Adjustments sections IRREGULAR VOLUME DISPENSED Frequently this is caused by faulty material The material must be a smooth homogeneous mixture without any air entrapped in it A second cause could possibly be that the material is not being supplied Check the reservoir pressure as it may be too low for the type of material being dispensed and or the rate at which the system moves the dispense valve may be too fast To adjust follow the directions found in the Operation Adjustments sec
4. 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 procedures judiciaires ex cut s donn s ou intentes a la suite de ou en rapport directement ou indirectement avec les proc dures 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
5. at the back of the manual and include the part numbers for ordering replacement parts GENERAL ACCESSORIES Graco Liquid Control offers a full line of standard and custom accessories for your dispensing needs including Valve Controllers Syringe Feed Systems Cartridge Retainers and Pressure Reservoirs Titan 200 High Pressure Cartridge Feed Systems Transfer Pump Feed Systems for 1 5 and 55 gallon containers Mounting Bases and Brackets Custom Needles and Needle Blocks Consult your Dispensit dealer or the factory for details DESCRIPTION OF OPERATION The normal ready state of the system is as follows e The material supply line is filled with dispensable material e The system has been purged filling the valve with material up to the Piston 4 e The Piston 4 is seated in the Needle Seat 1 The dispense cycle begins when the controller is activated Air at 70 psi 4 8 bar enters the Open port and raises the Piston 4 off the Needle Seat 1 Material flows through the Valve Body 5 and out through the Needle Block 23 Volume can be varied by changing the material pressure needle size dispense speed and dispense time When the correct amount of material has been dispensed the controller relieves air from the Open port and applies air to the Close port The Piston 4 seats back into the Needle Seat 1 sealing the valve and ending the dispensing process The system is again in the normal ready state
6. initial checkout to determine if the setup has been properly completed The dry checkout is conducted without any material in the system Refer to the illustrations above or below 1 Turn on the controller and the air supply 2 Set the air pressure to 70 psi 4 8 bar on the system pressure gauge 3 Inthe normal ready state the Piston 4 is seated in the Needle Seat 1 sealing the dispense valve For this test loosen the Nut 2 and remove the Needle Block 23 and Needle Seat 1 so that you can visually verify that the Piston 4 rises inside the Valve Sleeve 3 4 Momentarily press the dispense valve cycling control switch 5 The controller applies air to the Open port of the dispense valve the Piston 4 lifts After the time delay the controller applies air to the Close port causing the Piston 4 to move down Visually verify the piston movement When this happens the system is correctly installed 6 Reinstall the Needle Block 23 and Needle Seat 1 with the Nut 2 Anytime the Needle Seat 1 is replaced you must loosen the Hex Nut 20 and tighten the Adjustment Screw 21 into the Valve Body 5 until it seats Then back off the Adjustment Screw 21 approximately 2 turns and tighten the Hex Nut 20 This step is required for proper adjustment of the Piston 4 OPERATING PROCEDURES MATERIAL LOADING Material is supplied from a pressure vessel or pump with enough pressure to cause a proper rate of flow from the dispe
7. GRACO Instructions 332094A Dispensit 710 sa Usage Statement Depending on valve configuration this valve can be used to dispense the following Acrylics Conformal Coatings Epoxies Lubricants RTV Silicones Silicone Oils Solder Flux Solder Mask UV Curables Dispense Valve 100psi 0 69 MPa 6 9 bar Maximum Working Pressure Important Safety Instructions A Read all warnings and instructions in this manual K Save these instructions See Page 3 for model information including maximum working pressure and approvals PROVEN QUALITY LEADING TECHNOLOGY DISPENSIT MODEL 710 DISPENSE VALVE OPERATING 8 MAINTENANCE MANUAL ELL HR ed de EE 3 Safety INTOFMAUON Ee 3 Illustration References EE 3 General Accessories s d ka nnen 3 Description Of Operation ccccecceeceeeeeeeeeeeeeeeneeeeseneeeesensoneseesoneeeeseneees 4 SCUD PRO CCC UNG ia i 5 Mounting Dispense Valve ena 5 Au SONA ai EE 5 Operating Procedur s omiin eee 5 Diy System e TEE 5 vlalenal LOAG ING E 6 Remote Mounted Material Gupphy 6 Valve Mounted Syringe Material Supply cece eecceeeseeeeeeeeeeeeees 6 Wet System Checkout ane 6 Operatlon AGJUSUMEMNIS ssceicesicvatavordvoreveideeliveriealivetdastevotduslaveybuaborsviesbouetiu 6 Al SUDDIY e WEE IMEN EE 6 Material Output Adjustment ne 6 Dispense Needle Height Adjustment 00n0nnannnnannnnnnnnnnnnnnnnnnnnnnennni 6 Periodic Maintenance u k 7 Dispense Needle Replacement
8. ack side of the seal over the shaft to protect the inner and outer lips If this is not possible carefully tuck the lip in to avoid rolling it back or cutting it If installing over sharp edges slide the seal carefully into place to avoid cutting it Do not use any sharp tools or objects to install U cups 12 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 inadequate 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
9. emove residual chemicals often have negative effects on the mechanical properties of O rings and seals O Ring Guidelines e Always replace an O ring with the identical one in size durometer hardness type and material of construction Always be alert to the location and size of each O ring as many look alike and be careful not to mix them Often similar sizes may be used in various locations on the equipment and if replaced incorrectly the equipment may not function properly Refer to the Machine Operation and Service Manual for the correct part number of all O rings used throughout the equipment and replace them with factory approved parts only e Re use of O rings is not recommended Only re use O rings as a last resort If you must re use them be sure that they are clean have no cuts or flat spots and contain NO foreign material Also be sure not to soak them in solvent for extended periods as this can cause deterioration of the O ring Always replace O rings that are cut nicked or distorted in shape or cross section Always apply a very thin film of Krytox 203GPL lubricant item 84 0200 K3 11 to the entire surface of the o ring before installation Avoid excessive lubrication If installing O rings over threads on a shaft or across sharp edges roll or push the O ring carefully into place being careful to avoid cutting or nicking it Avoid stretching the O ring too much as it may not return to the proper size Do not use any sharp tool
10. 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 332094 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
11. 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 incidental 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
12. nse needle Note The material pressure will vary depending on the application Attach the air line to the regulator and set the air pressure control to the setting required for the application Note When using a remote reservoir the delivery tubing and fittings must be compatible with the material being dispensed and capable of withstanding the dispensing pressure WET SYSTEM CHECKOUT Using the purge cycle on the air supply controller run the material through the material supply line and valve until a smooth material flow is observed through the dispense needle After the purge cycle has been completed set the air supply controller to the manual cycle mode and cycle the dispense valve several times OPERATION ADJUSTMENTS AIR SUPPLY ADJUSTMENT The air pressure to the controller and material supply regulator is typically 70 psi 4 8 bar Do not exceed 100 psi 6 9 bar pressure to the dispense valve However the material supply pressure must be adjusted according to the type of material being dispensed Too low a pressure will give you an inconsistent dispensed volume because the material does not have sufficient pressure to flow smoothly through the needle Too high a pressure may cause material separation or packing Use the minimum pressure needed to obtain smooth material flow during the purge cycle MATERIAL OUTPUT ADJUSTMENT The material output depends on the material pressure size of needle and the rate at which the di
13. s or objects to install O rings U cup Seal Guidelines e Always replace a U cup seal with the identical one in size durometer hardness type and material of construction Always be alert to the location and size of each U cup seal as many look alike and be careful not to mix them Often similar sizes may be used in various locations on the equipment and if replaced incorrectly the equipment may not function properly Refer to the Machine Operation and Service Manual for the correct part number of all U cups used throughout the equipment and replace them with factory approved parts only e Always apply a very thin film of Krytox 203GPL lubricant item 84 0200 K3 11 to the inner and outer lips of the seal before installation Re use of U cup seals is not recommended Only re use U cups as a last resort If you must re use them be sure that they are clean have no cuts or flat spots and contain NO foreign material Also be sure not to soak them in solvent for extended periods as this can cause deterioration of the seal Always replace U cups that are cut have flat spots are distorted in shape or are damaged in any manner Always be alert to the proper orientation of the sealing lips and re install them in the same direction as shown on the specific equipment assembly drawing The U cup seals are intended to seal in only one direction and if installed incorrectly chemical leakage through the U cup can occur Whenever possible push the b
14. spense valve is moved by the system to which it is attached DISPENSE NEEDLE HEIGHT ADJUSTMENT Ideally the material should just contact the work piece enough to create an adhesive bond and cause a clean separation of the material from the needle tip upon completion of the dispense cycle 6 PERIODIC MAINTENANCE DISPENSE NEEDLE REPLACEMENT If no material or reduced volumes of material come out of the dispense needle it may be partially or completely clogged Clean with water or solvent depending on the material dispensed A fine wire used cautiously will help open clogged needles Replace the needle if damaged or severely clogged Replacement needles can be ordered for the Model 710 Dispense Valve by specifying the proper part number See the Recommended Spare Parts section of this manual or consult the drawings for your exact model DISASSEMBLY Refer to the illustration below and the drawings in the back of this manual for your exact model pa o SR O odno Turn off the air supply and remove the Connectors 28 from the controller Turn off the material supply and remove the material inlet line from the Adapter 15 Remove the valve from its mounting Remove the Needle Seat 1 and Needle Block 23 by removing the Nut 2 NOTE Also remove the O ring 18 and Gasket 24 associated with this needle seat Save the gasket Remove the Retaining Plug 17 which allows the Spring 13 to push the Valve Sleeve 3 and the Pis
15. t Screw 21 at this time Install the U cup Seals 16 on the Piston Assembly 4 positioning them as noted in the illustration Lubricate the piston rod and insert the Piston Assembly 4 into the Valve Sleeve 3 Place the Spring 13 on top of the Piston Assembly 4 and using the boss on the top of the piston to center the spring insert the Piston Assembly 4 and Valve Sleeve 3 into the Valve Body 5 until the spring compresses Hold this in place firmly Align and insert the Retaining Plug 17 Tighten the Retaining Plug 17 until it is snug Do not overtighten Carefully install the Needle Block 23 through the Gasket 24 and into the Needle Seat 1 Position the O ring 18 on the Needle Seat 1 and place against the Valve Sleeve 3 Install the Nut 2 and tighten until snug Do not overtighten Lubricate the threads of the Adjustment Screw 21 and thread the Hex Nut 20 onto it fully Insert the O ring 19 into the End Cap 14 Thread the Adjustment Screw 21 and Hex Nut 20 into the End Cap 14 through the O ring 19 until the Adjustment Screw stops Back the Adjustment Screw 21 off two turns then tighten the Hex Nut 20 down against the O ring 19 and End Cap 14 Install the open port and close port Elbows 25 and their Gaskets 24 Install the Tubing 29 Mount the valve to its point of use Connect the material inlet line to the Adapter 15 Attach the air supply line connectors
16. tion of this manual REDUCED VOLUMES DISPENSED Check to see if needle is partially clogged refer to Periodic Maintenance section NO MATERIAL DISPENSED This is due to a clogged needle refer to Periodic Maintenance section MATERIAL CONTINUES TO FLOW AFTER SHUT OFF This can be due to material preventing the piston from seating properly into the needle seat or to a worn piston and or needle seat Remove needle block and needle seat clear the blockage or replace the worn components 10 MODEL 710 RECOMMENDED SPARE PARTS Note These parts are routine supply items or wear parts not covered by warranty for normal wear ONO NEEDLE 12 GAUGE x 75 Pack of 4 A9010017 4 BR EE Needle Sampler Package 10 each of 14 16 E4000025 50 m 18 20 and 22 Needle LL 14 gax 77 Pack of 507 Needle LL 14 ga x 1 Pack of 50 Needie LL 15 ga x 17 Pack of 50 Needle LL 16 ga x 77 Pack of 50 Needle LL 18 ga x 77 Pack of 50 Needle LL 19 gax 7 Pack of 50 Needle LA ga x 77 Pack of 50 Needle LZ ga x 4 Pack of 50 Needle LL 23 ga x 14 Pack of 50 COO Needles are included in Needle Sampler Package The quantity or needle size may vary for your application GENERAL GUIDELINES FOR O RINGS AND U CUP SEALS Sizes and materials of construction for O rings and U cup seals are selected by Graco Inc based on compatibility with the chemicals to which they will be exposed Solvents that may r
17. ton Assembly 4 out of the Valve Body 5 Remove the U cup Seals 16 Remove the Set Screw 27 and remove End Cap 14 from the Valve Body 5 Loosen the Hex Nut 20 and remove the Adjustment Screw 21 and its O ring 19 from the End Cap 14 Remove the O rings 6 from the End Cap 14 and from the Valve Sleeve 3 Remove the Retaining Tube 9 from the Valve Sleeve 3 Remove the Retaining Ring 12 from the Valve Sleeve 3 Remove the Washer 11 Remove the U cup Seal 10 Remove the Spacer 8 Remove the Posipak Seal 7 Remove the Tubing 29 from the open and close Elbows 25 and remove the elbows and their Gaskets 24 The 710 Dispense Valve is now ready for cleaning and assembly MODEL 710 GENERAL ILLUSTRATION oi e nam pe IL Em PERIODIC MAINTENANCE ASSEMBLY Refer to the illustration above and the drawings at the back of this manual for your exact model oo eS co go Install the Posipak Seals 7 in the Valve Sleeve 3 Insert the Spacer 8 Install the U cup Seals 10 in the Valve Sleeve 3 Align the Spacer 8 and insert the Retaining Tube 9 into the Valve Sleeve 3 Install the Washer 11 and the Retaining Ring 12 in the Valve Sleeve 3 Install the O rings 6 on the Valve Sleeve 3 and on the End Cap 14 Install the End Cap 14 in the Valve Body 5 Secure the End Cap 14 with the Set Screw 27 Caution Do not install the Adjustmen
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