Graco Inc. 311320G manuale d’uso

311320G Operation, P ar ts , Ser vice and Repair Model D Spra y Gun For use with non-flammab le poly urethane fo ams. For pr ofessional use onl y . Not f or use in explosive atmospheres. See page 2 f or model inf or mation. 1000 psi (7 MP a, 70 bar) Maximum Working Pressure Important Safety Instructions Read all w ar nings and instructions in this [...]

Models 2 311320G Contents Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 W arnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Overall View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Major Comp onents . . . . . . . . . . . . . . . . . . . . . . . 5 Center line Compo nents [...]

Warnings 311320G 3 W arnings The f ollo wing general warnings are f or the setup , use, grounding, maintena nce, and repair of this equipment. Additional, mo re specific warnings may be f ound throughout the body of this manual where applicable . Symbols appearing in the body of the manual ref er to these general w ar nings. When these symbols appe[...]

Warnings 4 311320G FIRE AND EXPLOSION HAZARD Flammab le fumes, such as solv ent and paint fumes, in w ork area can ignite or e xplode. T o help pre vent fire and e xplosion: • Use equ ipment only in well v entilated area. • Eliminate all ignition sources; such as pilot lights , cigarettes , por table electric lamps, and plastic drop cloths (pot[...]

Overall View 311320G 5 Overall Vie w Major Components F IG . 1: Major Components Spring Retainer Case V alving Rod Closure Spring V alving Rod P ositioner V alving Rod Adjustment Screw V alving Rod Stop Bar V alving Rod Piston Rod Tr i g g e r Air Cap Ad justment V alve Gun Bloc k Coupling Block Coupling Bloc k Mounting Scre w[...]

Overall Vi ew 6 311320G Centerline Components F IG . 2: Centerline Components Coupling Block Gask ets Air Cap Mixing Chamber Case Snap Ring Screen Seal A-Iso Check V alve Screen Scre w Gun Block Mounting Scre w O-Ring Closure Screw V alving Rod Assembl y Felt Wiper Reta iner Gun Bloc k R-Resin Check V alve Screen Mounting Screw[...]

Operation Basics 311320G 7 Operation Basics Isocy anate Hazar d K eep A and B Components Separate Gr ounding Check y our local electr ical code and propor- tioner manual f or detailed grounding instruc- tions. Ground the spra y guy th rough connection to a Graco-appro v ed grounded fluid supply hose . Coupling Bloc k Install Coupling Bloc k 1. Insp[...]

Operation Basics 8 311320G Manual V alves 1. Open manual v alves using 5/16 in. nut driver; tur n manual v alv es counterclock- wise approximately three full turns. Do not open until it bottoms out. 2. Close manual v alves by turning fully clock- wise. F IG . 4: Manual V alves Remo ve Coupling Block 1. Disconnect air hose. 2. Close both manual v al[...]

Operation Basics 311320G 9 Air Hose Connection T o CONNECT air hoses, pull back slee ve of f emale fitting, inser t male fitting and slide slee v e f orward to secure connection. T o DISCONNECT air hose s, pull bac k slee ve of f emale fitting and re mov e male fitting. F IG . 5: Air Hose Connection V alving Rod Adjustment Screw Use to regulate amo[...]

Operation Basics 10 311320G Air Cap Adjustment V alve Use to control amount of air that passes through air cap and ov er mixing chamber tip. Airflow helps k eep tip fr ee of spray ed chemical. T oo much air ma y distor t spra y patter n and create ov erspread. T oo little air will not prop- erly clean end of valving rod. T o OPEN valv e, tur n knob[...]

Initial Se t Up 311320G 11 Initial Set Up 1. Remov e coupling bloc k from gun. 2. Check v alving rod clearance in closed posi- tion. Rod should e xt end appro ximately 1/32 in. (1 mm) be yond tip of mixing chamber . If it does not, see V alving Rod Adjustment procedure, page 21. F IG . 9: V alving Rod (Closed P osition) 3. Adjust v alving rod tra v[...]

Daily Start-Up 12 311320G Dail y Star t-Up 1. Connect air supply to gun, page 9. 2. Adjust air cap v alv e, page 10. 3. Saturate f elt in felt wiper with gun cleaner using flush can. 4. T r igger gun multiple times to ensure v alving rod mov es the full tra v el quickly and freely . 5. Open both manual v alves, page 8. 6. T est spra y on disposab l[...]

Pressure Relief Procedure 311320G 13 Pressure Relief Pr ocedure 1. Close both manual v alves. 2. T r igger gun once onto waste area to relie ve fluid pressure in front end of gun. 3. Disconnect gun air supply , page 9. 4. If gun is remov ed from coupling bloc k, f ol- low Clean Spr a y Gun Procedure, page 18. Relie v e pressure bef ore cleaning or [...]

Spray Pattern Adjustment 14 311320G Spra y P attern Adjustment 1. Check v alving rod clearance in closed posi- tion. Rod should e x tend appro ximately 1/32 in. (1 mm) be yond tip of mixing chamber . If it does not, see V a lving Rod Adjustment procedure, page 21. F IG . 10: V alving Rod (Closed P osition) 2. Adjust v alving rod tra v el to initial[...]

Spray Pattern Adjustment 311320G 15 ter n opens as adjustment is made (F IG . 12). F IG . 12: Opening Spray P attern 5. Fine tune spra y patter n: a. After you bac k out adjustment screw , make fine adjustments (1/8 turns or less in either direction as required) to obtain patter n shown in F IG . 13. Moving the screw out be yond this point ma y cau[...]

Spray Pattern Adjustment 16 311320G e. If b uildup recurs shor tly after cleaning tip , remov e air cap and ensure inside is clean. Reinstall air cap and ensur e airflow is properly set. If no b uildup occurred on air cap , check the f ol- lowing items in this orde r and readjust if neces- sar y: • Chec k V alving Rod Adjustment Screw/Slee ve set[...]

Maintenance 311320G 17 Maintenance Gun Service Kits Use either the 1-Q uar t Gun Ser vice Kit (296980) or 3-Gallon G un Ser vice Kit (296981) to perf orm daily flushi ng of spra y gun without disassembly . F IG . 15: 1-Quart Gun Service Kit F or more inf or mation about the 1-Quar t Gun Ser vice Kit, s ee manual 311340. F IG . 16: 3-Gallon Gun Serv[...]

Maintenance 18 311320G Clean Spra y Gun Pr ocedure Thoroughly flush gun bloc k with gun cleaner bef ore removing v alving rod or mixing compo- nents from gun bl ock. Also allo w chemicals in spra y gun to cool before cleaning. This procedure makes use of the 1-Quart or 3-Gallon Gun Service Kit. 1. Close both manual v alves. 2. Remov e gun from coup[...]

Repair 311320G 19 Repair Filter Screen Remo v al and Service 1. P erf orm Pressure Relief Procedure (page 13) and Clean Spra y Gun Procedure, page 18. 2. Unthread screen mounting screw . Remov e screen mounting screw and filter screen assembly from gun b lock. F IG . 17: Filter Screen Assembl y 3. Remov e screen screw retainer (snap ring at end of [...]

Repair 20 311320G Clean Injection Slots 1. P erf orm Pressure Relief Procedure (page 13) and Clean Spra y Gun Procedure, page 18. 2. Remov e check v alv es . F IG . 18: Check V alves 3. Inspect check v alves to ensure slee ve is secured, and place chec k v alv es in sepa- rate containers of gun cleaner . 4. Flush cleanout por ts with gun cleaner . [...]

Repair 311320G 21 V alving Rod Adjustment In closed position, v a lving rod should e xtend appro ximately 1/32 in. (1 mm) bey ond tip of mixing chamber . If it does not, f ollow this pro- cedure: F IG . 19: V alving Rod (Closed P osition) 1. P erf orm Pressure Relief Procedure (page 13) and Clean Spra y Gun Procedure, page 18. 2. Disconnect air sup[...]

Repair 22 311320G Centerline Component Remo v al 1. P erf orm Pressure Relief Procedure (page 13) and Clean Spra y Gun Procedure, page 18. 2. Remov e air cap by han d, tur ning it counter- clockwise . 3. Remov e screen screw assemb ly . Flush and place in gun cleaner . 4. Remov e check v alv es. Flush and place in gun cleaner . 5. Flush screen scre[...]

Repair 311320G 23 a. Remov e ball and spr ing assembly . Hold ball and unscre w assembly . If dir t or material build-up pre v ents complete remov al of the spr ing, screw it bac k in. Soak assembly in gun cleaner and try to remov e it again. If ball and spr ing assembly cannot be remo ved undam- aged, replace it. b . Use check v alve cleanout dril[...]

Repair 24 311320G Centerline Component Installation 1. Remov e fe lt wiper assembly from rear of mixing chamber . 2. Ensure inter nal mixing chamber par ts are in place. 3. Inser t chamber into gun bloc k. Align k ey- wa y in chamber with pin protruding from top of hole in b lock. F IG . 25: Mixing Chamber Insertion 4. Press chamber into bloc k so [...]

Repair 311320G 25 10. Replace valving rod spring and spr ing retainer case. Gr asp knob , push in, and tur n clockwise to loc k in place. 11. Replace air cap. 12. Replace check v alv es and screen scre w assemb ly . 13. Replace closure screw in top of gun b loc k. 14. Mount gun onto coupling block. 15. Connect air supply to gun. 16. Adjust felt wip[...]

Parts 26 311320G Pa r t s Model D Spra y Gun Assembl y M L K AF Z B X U V E W AC AK AB AA G AP AL AS Y J F B AD H A S AG AJ D AM D R AE N AN AR AQ T D C AT[...]

Parts 311320G 27 Model D Spra y Gun Assembl y ❄ Purchase Air V alve Rep air Kit 296125 (purchase se p- arately). In cludes Needle V alve P acking. ★ Not shown. d T able 1: Model D Gun Assembl y , P arts by Model Number Ref. No. P ar t No. D escription Qty . A 295591 He x nipple, 1/8 in. MPT , steel 1 B 295185 Mounting screw , 1/2 in. LG 2 C 296[...]

Parts 28 311320G T able 2: Model D Gun Assembl y , Parts b y Mixing Chamber Size Mixing Chamber Size Reference Size 46 55 62 70 78 K (valving rod) 296578 296579 296580 296581 296582 AC ( c h a m b e r ) 296594 (N-800) 296595 (N-810) 296584 (L-800) 296590 (L-800-LM) 296585 (L-810) 296591 (L-810-LM) 296597 (N) 296586 (L) 296592 (L-LM) 296598 (N) 2965[...]

Parts 311320G 29 Standar d Mixing Chamber s Six standard mixing chambe rs are av ailable. The f ollowing tabl e provides a gener al description about use and operational perf or mance of each chamber . Ac tual patter n sizes and outputs achie v ed ma y v ar y depending on mate r ial viscosity , hose length, c ondition of equipment, en viron- ment, [...]

Parts 30 311320G Air Cylinder Assembl y P art Number 296632 ❄ P ar ts included in Air Cylinder S eal Kit 296725 (pur chase separately) ▲ Replacement Danger and W ar ning labels, t ags , and cards are av ai lable at no cost. Ref. No. P art No. Description Qty . A ❄ 107083 O-ring, fluoroelastomer 1 B 295494 P an head machine screw , 8-32 x 3/16[...]

Parts 311320G 31 Coupling Bloc k Assembl y Model 295887 (Standard) Model 295884 (Recirc) Model 295887 Model 295884 A G G E D C B A F E D E A D A G F B C Ref. No. P art No. Description Qty . A 295662 Flush seal pipe plug, 1/8 in. 2 B 295888 R-swiv el fitting 1 C 295889 A-s wiv el fitting 1 D 296626 Manual v alve assemb ly (pack of 2) - E 295619 Moun[...]

Notes 32 311320G Notes[...]

Technical Data 311320G 33 T echnical Data * Theoretical: actual re sults will vary with operating conditions Category Data Maximum Fluid W or king Pressu re 1000 psi (7 MP a, 70 bar) Maximum Air Inlet Pressure 100 psi (0.75 MP a, 7.5 bar) Minimum Air Inlet Pressure 90 psi (0.6 MP a , 6 bar) Maximum Output (flow r ate) 16 lbs/min (7.3 kg/min) * Mini[...]

All written and visual data contained in this document reflects the latest product information available at the time of publica tion. Graco reserves the right to make changes a t any time without notice. Original instructions. This manual contains English. MM 311320 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea[...]