Graco 306860N User's Manual
Contents
1. 238926 order Repair Kit 239000 See page 9 1 Lubricate the piston packing 9 piston 13 and spring locater 10 with lithium base grease 2 Place the washer 6 over the pointed end of the piston 13 3 Place the packing 97 with its lips facing down over the pointed end of the piston 13 and against the washer 6 4 Insert the piston 13 into the bottom of the cylin der 4 and gently work it into place 5 Reassemble the remaining parts in reverse order of disassembly Make sure the gasket 3 and o ring 7 are in place Torque the regulator seat 12 into the housing 5 to 175 to 200 in Ib 20 to 22 Nem Over tightening could break off the hex portion of the seat AN Install with lips down A Torque to 175 to 200 in lb 20 to 22 Nem A Model and Series stamped on bottom Model 206819 Series F Model 222405 Series B Ref No 901 W 9 10 11 12 13 Part No 100721 101954 150670 166982 177124 171885 166985 166986 501511 111796 166988 167443 204523 238932 Description PLUG pipe hex socket 1 4 npt RING int ret 0 75 in 19 mm housing dia cadmium plated GASKET copper CYLINDER regulator HOUSING regulator WASHER back up acetal homopolymer O RING PTFE SPRING helical compression yellow color coded Model 206819 only SPRING helical compression blue color coded Model 222405 only PACKING U type PTFE LOCATOR spring KNO2. Line Fluid Return Line Fluid Regulator Air Assisted Airless Spray Gun Air Line Fluid Circulation Line TOTMOOU gt Installation DY B DE G C ir B gt e p m SINGLE CIRCULATING SPRAY STATION 06865 D Fig 2 MULTIPLE CIRCULATING SPRAY STATION 06866 306860 5 Notes 6 306860 Operation Pressure Relief Procedure 44 WARNING INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally Fluid under high pressure can be injected through the skin and cause serious injury To reduce the risk of an injury from injection splashing fluid or moving parts follow the Pressure Relief Procedure whenever you are instructed to relieve the pressure stop spraying check or service any of the system equipment or install or clean the spray tip 1 Lock the gun trigger sa
3. always follow the Pressure Relief Procedure on page 7 before adjusting cleaning repairing or removing the regu lator from the system Never pressurize the system with the back pres sure regulator adjusting knob removed Never completely remove the adjusting knob when system pressure is present Flushing Flush the regulator whenever the rest of the system is flushed Before flushing open the regulator by turning the adjusting knob counterclockwise until the spring tension is relieved NOTE Do not allow paint or solvent to set in the system for a long time Fluid could dry on the piston causing leakage at the piston packing If leakage occurs disassemble and clean the regulator Cleaning Regular cleaning and inspection and lubrication of the regulator are necessary to keep the regulator working properly 1 Open the regulator and follow the Pressure Relief Procedure on page 7 2 Remove the back pressure regulator from the system 3 Disassemble the regulator referring to the parts drawing on page 9 Clean and inspect all parts 44 CAUTION Use special care when handling the hard carbide portions of the piston 13 and seat 12 Damage will cause poor operation and leakage 8 306860 Repairing Reference numbers marked with an asterisk for example 3 are included in the repair kits which may be purchased separately For Models 206819 and 222405 order Repair Kit 220135 For Model
4. B adjusting SEAT regulator PISTON regulator These parts are included in Repair Kit 220135 which may be purchased separately A dl dl mk mk Model 238926 Series A Ref No oak W 7 8 9 10 11 12 13 Part No 101970 113751 189817 191840 191841 171885 166985 166986 111796 166988 167443 238933 238932 Description PLUG pipe hex socket 1 4 npt RING int ret 0 75 in 19 mm housing dia stainless steel GASKET acetal homopolymer CYLINDER regulator HOUSING regulator WASHER back up acetal homopolymer O RING PTFE SPRING helical compression yellow color coded PACKING U type PTFE LOCATOR spring KNOB adjusting SEAT regulator PISTON regulator These parts are included in Repair Kit 239000 which may be purchased separately 306860 Qty o mk gt mk A dl dl mk mk Notes 10 306860 Accessories Use Only Genuine Graco Parts and Accessories Fluid Pressure Gauges 501511 Standard on Model 222405 Converts Model 206819 to Attaches to optional regulator outlet 0 1000 psi 0 7 MPa 0 70 bar range 2 in 51 mm dial Blue color coded 102397 0 3000 psi 0 21 MPa 0 207 bar MPa 166986 Standard on Model 206819 l 14 21 MPa 138 207 bar range 101696 0 1000 psi 0 7 MPa 0 70 bar Yellow color coded LA NPNM bouer miting NOTE Spring 166986 supplied
5. Instructions Parts List HIGH PRESSURE Back Pressure Regulator 306860N For use in a high pressure spray circulating system to regulate back pressure to gun s and maintain proper pressure for circulation For professional use only Not approved for use in European explosive atmosphere locations CARBON STEEL REGULATORS Part No 206819 Series F 3000 psi 21 MPa 207 bar Maximum Working Pressure 1000 3000 psi 7 21 MPa 70 207 bar Regulated Fluid Pressure Range Part No 222405 Series B 3000 psi 21 MPa 207 bar Maximum Working Pressure 0 1000 psi 0 7 MPa 0 70 bar Regulated Fluid Pressure Range STAINLESS STEEL REGULATOR Part No 238926 Series A 3000 psi 21 MPa 207 bar Maximum Working Pressure 1000 3000 psi 7 21 MPa 70 207 bar Regulated Fluid Pressure Range Important Safety Instructions Read all warnings and instructions in this manual Save these instructions Table of Contents SYMDOINS titi a o ae eee ae 2 ETD RE 405 be eee derek eee tee ede ne 2 Installation 2 4 Operation sasare tatek kana ee ner 7 Maintenance 2 2222 cece eee eee eee 8 PASA ESE ne ee Se N Ee N 9 ACCESSOIES esse EE vd Bed ee tw eat hee Ep oe 11 Technical Data SEE cece Ee EE Ee se ee 11 Warranty xisco EO eier OE OR hets 12 Graco Phone Number SEE EE ESE see 12 PROVEN OUALITY LEADING TECHNOLOGY CE Symbols Warning Symbol Caution Symbol This symbol alerts you to the poss
6. ON HAZARD Spray from the gun leaks or ruptured components can inject fluid into your body and cause extremely serious injury including the need for amputation Fluid splashed in the eyes or on the skin can also cause serious injury Fluid injected into the skin might look like just a cut but it is a serious injury Get immediate medi cal attention Do not stop or deflect leaks with your hand body glove or rag Keep your hands away from the end of the drain valve when opening it Lock the gun trigger safety when you stop spraying Follow the Pressure Relief Procedure on page 7 if the spray tip clogs and before cleaning checking or servicing the equipment Follow the Pressure Relief Procedure on page 7 before removing the regulator s adjusting knob Do not pressurize the system when the back pressure regulator s adjusting knob is removed Tighten all fluid connections before operating the equipment Check the hoses tubes and couplings daily Replace worn or damaged parts immediately Do not repair high pressure couplings you must replace the entire hose Use only Graco approved hoses Do not remove the spring guard that is used to help protect the hose from rupture caused by kinks or bends near the couplings TOXIC FLUID HAZARD Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin inhaled or swallowed Know the specific hazards of the fluid you are using Store hazardou
7. fety 2 Close the bleed type master air valve required in your system 3 Unlock the gun trigger safety 4 Hold a metal part of the gun firmly to the side of a grounded metal pail and trigger the gun to relieve pressure 5 Lock the gun trigger safety 6 Open the drain valve required in your system having a container ready to catch the drainage 7 Leave the drain valve open until you are ready to spray again If you suspect that the spray tip or hose is completely clogged or that pressure has not been fully relieved after following the steps above very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually then loosen completely Now clear the tip or hose Adjusting the Regulator The back pressure regulator controls pressure ahead of the regulator intake To adjust the regulator first back the adjusting knob out until there is no spring pressure Then turn the knob clockwise to increase pressure Adjust the pump air pressure and the back pressure regulator for the best spraying combination and proper circulation of fluid Record the regulator and air pressure settings for future reference The regulator cylinder has exterior markings set points 1 to 8 for repeat settings 306860 7 Maintenance 44 WARNING COMPONENT RUPTURE HAZARD To reduce the risk of serious bodily inju iQ ME ry including fluid injection or splashing in the eyes or on the skin
8. ibility of serious This symbol alerts you to the possibility of damage to injury or death if you do not follow the instructions or destruction of equipment if you do not follow the NA INSTRUCTIONS 2 306860 instructions 44 WARNING EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury This equipment is for professional use only Read all instruction manuals tags and labels before operating the equipment Use the equipment only for its intended purpose If you are not sure call your Graco distributor Do not alter or modify this equipment Check equipment daily Repair or replace worn or damaged parts immediately Do not exceed the maximum working pressure of the lowest rated system component Refer to the Technical Data on page 11 for the maximum working pressure of this equipment Use fluids and solvents which are compatible with the equipment wetted parts Refer to the Tech nical Data section of all equipment manuals Read the fluid and solvent manufacturer s warnings Route hoses away from traffic areas sharp edges moving parts and hot surfaces Do not expose Graco hoses to temperatures above 180 F 82 C or below 40 F 40 C Wear hearing protection when operating this equipment Do not lift pressurized equipment Comply with all applicable local state and national fire electrical and safety regulations 44 WARNING INJECTI
9. onable 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 of war
10. ranty 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 reconnais sent 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 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 distributor closest to you Phone 612 623 6921 or Toll Free 1 800 328 0211 Fax 612 378 3505 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 Original instructions This manual contains English MM 306860 Graco Headquarters Minneapolis International Offices Belgium China Japan Korea GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 USA Copyright 1965 Graco Inc All Graco manufacturing locations are registered to ISO 9001 www graco com Revised 07 2011 12 306860
11. s fluid in an approved container Dispose of hazardous fluid according to all local state and national guidelines Always wear protective eyewear gloves clothing and respirator as recommended by the fluid and solvent manufacturer 306860 3 Installation The Typical Installations shown in Figs 1 and 2 are only guides in designing a system For assistance in designing a system to meet your needs contact your Graco distributor Installing the Back Pressure Regulator 1 Install the back pressure regulator A in the spray gun return line D See Figs 1 and 2 2 Connect fluid lines to the 1 4 npt f inlet and outlets of choice Make sure the fluid flow agrees with the IN and OUT markings on the regulator housing 4 306860 3 Install the accessory gauge if used in the optional inlet If more than one spray station is used install a back pressure regulator A in the circulating line H after the last spray station to maintain proper system pressures Refer to Fig 2 for multiple circulating spray stations NOTE The two 1 4 20 tapped mounting holes on the side of the regulator housing are for mounting the regulator when flexible fluid lines are used KEY Back Pressure Regulator Air Filter Regulator Fluid Supply Line Fluid Return Line Fluid Regulator Air Assisted Airless Spray Gun Air Line O TMOUODP Fig 1 KEY Back Pressure Regulator Air Filter Regulator Fluid Supply
12. se 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 accor dance 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 sub stitution 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 reas
13. with Model 206819 UHMW Polyethylene U Type Packing is recommended for 2000 3000 psi 14 21 MPa 108317 included in Repair Kit 220135 138 207 bar Use instead of 111796 ref no 9 with abrasive fluids Compression Springs 501510 Converts both models to 1000 2000 psi 7 21 MPa 70 138 bar range Red color coded Technical Data Category Data Maximum Fluid Inlet Pressure 3000 psi 21 MPa 207 bar Regulated Fluid Pressure Range Models 206819 and 238926 1000 3000 psi 7 21 MPa 70 207 bar Model 222405 0 1000 psi 0 7 MPa 0 70 bar Normal Factory Preset Range Models 206819 and 238926 2000 3000 psi 14 21 MPa 138 207 bar Model 222405 500 1000 psi 3 4 7 MPa 34 70 bar Maximum Flow Rate 3 5 gpm 13 25 liters min with 70 centipoise fluid at 75 F 23 C Fluid Inlet 1 4 npt f Fluid Outlet two 1 4 npt f Wetted Parts Models 206819 and 222405 Tungsten carbide PTFE acetal homopolymer cadmium and zinc plated steel stainless steel and chrome plated stainless steel Model 238926 Stainless steel Tungsten carbide PTFE acetal homopolymer Canadian Registration Number CRN Models 206819 238926 and 222405 Alberta 0C04874 52 Ontario 0C4874 5R1 306860 11 Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for u
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