Graco 332091A User's Manual
Contents
1. Screw the needle adapter check valve spring poppet assembly firmly into the Metering Rod Sleeve Assembly 7 Screw on the Stroke Adjustment Collar 1 Tighten the Socket Head Set Screw 18 Mount the valve and connect the air lines If your valve is equipped with optional cycle detection install the sensors and tighten the set screws The model 1206 Dispense Valve is now ready to be placed back into service Page 8 TROUBLESHOOTING Review the symptoms below for operating difficulties With each problem there are one or more possible causes to investigate NOTHING HAPPENS If absolutely nothing happens when trying to cycle the Dispense Valve check the electric and pneumatic power Check the foot switch or cycle start switch for proper connection HEAD CYCLES NOTHING DISPENSED 1 Check to see that there is enough air pressure to the reservoir and to the Dispense Valve 70 psi 4 8 bar 2 Check to see that the Stroke Adjustment Collar 1 in the illustration cycles properly 3 Perhaps material has set up in the reservoir or needle path examine and clear or replace as necessary 4 An air bubble could be near the check valve Cover the check valve end with fingertip and cycle or point check valve end UP and cycle 5 Remove the check valve and inspect the seat and spring IRREGULAR VOLUME DISPENSED Faulty material will cause irregular dispensing The material must be a smooth homogeneous mixture2. 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 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 o
3. eee 6 Model 1206 General Illustration ccccceeceeeeeeeeeeeeeeeeeeeeeeeeeees 7 ASSEN EEA S PEE A A A ST 8 Troubleshooting renoma nat hehehe 9 Model 1206 Recommended Spare Parts seeeeeeeeeeeeeeeees 10 PAC COS E T A AEAEE 11 General Accessories susuaasenomunkanenmsktmkn nedb 11 Model 1206 Accessories actu NE 11 General Guidelines for O rings and U cup Seals rnnnnnnnnnnnnnn 12 Warranty aa 2 13 GENERAL INFORMATION The Model 1206 Dispense Valve is engineered for applications which require volumetric consistency The 1206 allows operation with material supply pressures up to 100 psi 6 9 bar Material viscosity dispensing capabilities range from very thin material to high viscosity epoxies and metal filled pastes with viscosities above 1 000 000 cps 1000 Paes The Model 1206 ships complete with the following Model 1206 Dispense Valve Two 3 foot 9m sections of Pneumatic Air Line Seal Kit Luer Lock Needle Adapter 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 m
4. lower Retaining Ring 3 the lower Washer 16 and Posipak Seal 20 8 Lift out the Seal Separator Block 5 9 Remove the Needle Adapter 10 10 Carefully remove the Check Valve Spring 11 and then the Check Valve Poppet 13 11 Remove all of the remaining seals and o rings Page 6 MODEL 1206 GENERAL ILLUSTRATION HEEL hokrhrbrbob bff fife SEE NANA es Li PEHI NE 1 Stroke Adjustment Collar 3 fRetaining Ring 5 Seal Separator Block 6 Seal Separator Rod Metering Rod Sleeve Assembly Plastic Washer 188 rod models Needle Adapter Check Valve Spring Page 7 i x ALTERNATE 20 NEEDLE ADAPTER Check Valve Poppet sipak Seal S Posi Top Cylinder Block ocket Head Set Screw Posi sipak Seal Metering Rod O Ring some models He 46 me 2 Heri 2 PERIODIC MAINTENANCE ASSEMBLY Refer to the illustration above and the drawings in the back of this manual for your exact model ating shy re eat an by ute ps ote sea mar etre unm pus em PIO v N gt ak Insert the lubricated Posipak Seal 14 lip side down into the Metering Rod Sleeve 7 Insert the Seal Separator Block 5 Install in order the lubricated Posi
5. Instructions 7 332091A Dispensit 1206 EN Dispense Valve Pa Important Safety Instructions 2 Read all warnings and instructions in this manual Save these instructions SERIALH1674 g 4 lt t S pe g ra e 2c PROVEN QUALITY LEADING TECHNOLOGY DISPENSIT MODEL 1206 DISPENSE VALVE OPERATING AND MAINTENANCE MANUAL General INFOrMatiOMnssccscsstsssnciadcoss ce tsnasieassedd oats oateetc a deccisiateeeness 3 Safety Information annnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 3 Illustration References rrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnen 3 Description of Operation rrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 4 Setup Procedure juss ies seen ccntacansisiaannacedacanaaeincanscniaeonacesacanstetanas 4 Mounting Dispense Valve 2 2 cc cccdecceceedeeceneedeeeeneedeeeeneedeeeeneeteeee 4 Ait COmnmrOllers cv EE EE EEEE EEEE 4 Operating Procedures snnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnns 5 Dry System Checkout eccccecceceeeeeeeceeeeneeeeeeeeeeneedeneeeeeteeeeeeetnnee 5 Wet System Checkout arsenal eat 5 Operation Adjustments cccccceeeecceeeeeeesseeeeeeeeeeseeeaesseeeereess 6 Periodic Maintenance nnnnnrnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnr 6 Dispensing NO OGIC wc cseccsccevcccseeeneecnereneeeneeeneeenereneeenerenctenerenerenecdees 6 Disassembly cnccnkeaincn eee
6. Y see assembly drawing for part number 1 ASSY CHECK VALVE LUER LOCK OUTLET see assembly drawing for part number 1 1206 SPRING CAP CHECK VALVE SS A2000262 1 SPRING COMP 180 ODX 380LG 80 80LB IN SS 11000034 1 FINGER SNAP LUER LOCK RING J7000024 KRYTOX 203GPL ASSEMBLY LUBRICANT 84 0200 K3 11 Needle Sampler Package 10 each of 14 16 18 20 and 22 E4000025 50 ke Needle LL 14 ga x 7 Pack of 50 E4000001 50 a Needle LL 14 ga x 1 Pack of 50 E4000014 50 de Needle LL 15 ga x 7 Pack of 50 E4000004 50 x Needle LL 16 ga x 4 Pack of 50 E4000088 50 Needle LL 18 ga x 7 Pack of 50 E4000006 50 k Needle LL 19 ga x 7 Pack of 50 E4000008 50 h Needle LL 20 ga x 7 Pack of 50 E4000009 50 7 Needle LL 22 ga x 7 Pack of 50 E4000011 50 ek Needle LL 23 ga x 7 Pack of 50 E4000024 50 Note Additional Replacement Needles sizes are available consult factory Needles are included in Needle Sampler Package The quanity or needle size may vary for your application Page 10 ACCESSORIES GENERAL ACCESSORIES Graco 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 Single and Multi Needle Blocks customized for your application Mounting Ba
7. 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 e 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 e 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 back 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 Page 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 p
8. anual 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 inserted at the back of the manual and include the part numbers for ordering replacement parts Page 3 DESCRIPTION OF OPERATION The 1206 Dispense Valve is a positive displacement valve that requires continuous material feed The operation of the valve is as follows Material enters the Dispense Valve through the material inlet port located on the metering rod sleeve assembly and fills the dispense cavity The start device activates the dispense cycle To dispense air is valved to the top fitting and vented from the bottom lowering the metering rod blocking the material inlet and pushing material past the spring loaded check valve until the stroke adjustment collar stops at the top cylinder block At that time the material pressure becomes less and the spring loaded check valve reseats itself stopping the material flow After the time delay air is valved to the bottom fitting and vented from the top allowing the metering rod to rise when the rod passes the inlet material is pushed in to fill the dispense cavity The system is again in the normal ready state SETUP PROCEDURE MOUNTING DISPENSE VALVE The1206 dispense valve can be mounted in a variety of ways Consul
9. f 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 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 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 332091 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
10. ime delay so that the Dispense Valve is able to dispense completely before the valve reloads Rw Dan PERIODIC MAINTENANCE The model 1206 Dispense Valve has been engineered for easy cleanup DISPENSING NEEDLE Remove the luer lock dispensing needle by grasping at the base and twisting one quarter turn counter clockwise Clean with water or solvent depending on the material dispensed A fine wire used cautiously will help open clogged needles Replace if damaged or clogged Replacement needles can be ordered for the Model 1206 Dispense Valve by specifying the proper part number seen in the Recommended Spare Parts section in this manual DISASSEMBLY Refer to the illustration below and the drawings for your exact model at the back of this manual 1 Disconnect the air pressure lines and material line and remove the valve from its mounting If your valve is equipped with option Cycle Detection note the position of the sensors loosen the set screws and remove the sensors 2 Loosen the Socket Head Set Screw 18 and unscrew the Stroke Adjustment Collar 1 3 Carefully unscrew the Metering Rod Sleeve Assembly 7 from the Top Cylinder Block 17 4 Carefully push the Piston 2 out of the Top Cylinder Block 17 Remove the O ring 19 5 Remove the Metering Rod head 21 from the Piston 2 6 Take out the upper Retaining Ring 3 and remove the upper Washer 16 7 Remove the Seal Separator Rod 6 Then remove in order the
11. pak Seal 20 lip side up the lower Washer 16 and the lower Retaining Ring 3 Install the Seal Separator Rod 6 aligning the cross hole so that the metering rod can pass through it Insert the Metering Rod 21 carefully through the lower Retaining Ring 3 the lower Washer 16 the Posipak Seal 20 the Seal Separator Block 5 Seal Separator Rod 6 and the Posipak Seal 14 Install the lubricated U cup Seal 15 lip side down into the Top Cylinder Block 17 Install the upper Washer 16 then the upper Retaining Ring 3 Install the lubricated O ring 4 on the Piston 2 Install the lubricated O ring 19 into the Top Cylinder Block 17 Insert the Piston 2 with O ring 4 part way into the Top Cylinder Block 17 carefully so that the piston threads do not damage the Posipak Seal 14 Position the piston to accept the head of the metering rod Insert the Metering Rod head 21 into the Piston 2 Screw the Metering Rod Sleeve Assembly 7 into the Top Cylinder Block 17 Install the lubricated O ring 9 on the Metering Rod Sleeve Assembly 7 Install the lubricated O ring 12 carefully over the threads of the Needle Adapter 10 Insert the lubricated O ring 8 into the Metering Rod Sleeve Assembly 7 Use a blunt tool to seat the o ring firmly Insert the Check Valve Poppet 13 into the Check Valve Spring 11 Insert the check valve poppet spring assembly into the Needle Adapter 10
12. rect part number of all O rings used throughout the equipment and replace them with factory approved parts only 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 e 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 tools or objects to install O rings U cup Seal Guidelines 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
13. ses and Brackets Consult your Dispensit dealer or the factory for details MODEL 1206 ACCESSORIES Cycle Detection The cycle detection option for the 1206 lets your controller act upon detection of valve stroke cycle completion by use of a fiber optic sensor Item Description A5010014 Cycle Detection PNP sensor type A5010042 Cycle Detection NPN sensor type On Board Syringe Feed Assemblies Syringe feed assemblies can be mounted directly to the 1206 and include one empty syringe a syringe adapter syringe clamp and receiver cap Item Description A2010088 10 cc Syringe Feed Assembly A2010082 30 cc Syringe Feed Assembly Page 11 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 remove 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 cor
14. t the factory for an application review AIR CONTROLLER Operation of the 1206 requires a controller that provides the following e A minimum 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 Time delay capability to allow the valve to cycle Independent air pressure regulators for material reservoir and valve operation Air supply to the material reservoir this connection will vary depending on the type of reservoir A start device to signal the controller to cycle the valve Connection for an 1 8 inch 3 175 mm ID pressure tubing for use between the controller and syringe Page 4 OPERATING PROCEDURES DRY SYSTEM CHECKOUT This is an initial checkout to find if the system setup is complete Conduct the dry system checkout without material in the system e Attach the pneumatic pressure lines from the dispense valve to the air supply controller e Turn on the electric and air supply e Set the air pressure to 70 psi 4 8 bar on the system pressure gauge e Momentarily press the controller s Dispense Valve cycling control switch The metering rod should immediately stroke downward the time delay must be set to allow a complete downward stroke After the timer delay the metering rod should retract e When this happens the system installation is correct WET SYSTEM CHECKOUT e Attach the primed material line from the reservoir to the 1 8 NPTF ma
15. terial inlet port on the side of the 1206 Dispense Valve e Attach the air line to the regulator and set the air pressure control to the setting required for the application e Begin with material pressure set at 15 psi 1 0 bar and gradually increase material pressure until material feeds through the valve Note When utilizing a remote reservoir the reservoir delivery tubing and fittings must be compatible with the material being dispensed and capable of withstanding the dispensing pressure e Cycle the dispense valve several times adjusting the material pressure until the desired shot size is repeatable Page 5 OPERATING PROCEDURES OPERATION ADJUSTMENTS Adjust the Dispense Valve for proper operation as follows See step 4 for volume adjustment 1 Make sure that all the Dispense Valve connections are in place 2 Connect the material for dispensing Position a container to catch the dispensed material Cycle the Dispense Valve until you are getting consistent dispensing no inconsistencies in the dispensed material symmetrical deposit shape Weigh or measure a sample of the dispensed material to see if the volume is correct To adjust the volume loosen the set screw and adjust the stroke adjustment collar on the top of the Dispense Valve Raise the adjustment collar to increase volume and lower the collar to decrease volume Snug the set screw Repeat the above steps until you obtain the desired shot size Adjust the t
16. urchaser 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 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
17. without any air trapped in it A second cause could possibly be that the material is not filling the metering rod chamber fully and in time Check the reservoir pressure it may be too low for the type of material being dispensed and or the cycle time may be too fast Cycle time is a function of the air supply controller To adjust follow the directions found in the controller operating manual SLOW OR SLUGGISH CYCLE TIME This may be due to inadequate lubrication of the piston walls Refer to the Periodic Maintenance section of this manual HEAD DROOLS OR OOZES This can result from air trapped in the material being dispensed or worn seals First check the valve seals for excessive wear Seal kits are available and the proper kit for your valve is noted on the assembly drawing Refer to the Periodic Maintenance section of this manual NOTE If this is a 188 inch rod diameter valve be sure that the plastic washer and o ring above the outlet check valve is firmly seated DISPENSE VALVE LOCKS UP First check to see that you are using unlubricated air It is possible for oil to build up in the valve piston when using lubricated air Refer to the Periodic Maintenance section of this manual Page 9 MODEL 1206 RECOMMENDED SPARE PARTS Note These parts are routine supply items or wear parts not covered by warranty for normal wear 1 SEAL KIT 1206 see assembly drawing for part number 1 1206 METERING ROD SLEEVE ASS
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