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Graco 311320H manual

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Table of contents for the manual

  • Page 1

    311320H Oper ation, P ar ts , Se r vice and Re pair Model D Spra y Gun For use with non-flammable pol yurethane f oams. For pr ofessional use only . Not f or use in explosive atmospheres. See pa ge 2 for model infor mation. 1000 psi (7 MP a, 70 bar) Maxim um W orking P ressure Impor tant Safety Instructions Read all warnings and instructions in thi[...]

  • Page 2

    Model s 2 311320H Contents Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 W arnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Overall View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Major Compo nents . . . . . . . . . . . . . . . . . . . . . . . 5 Center line Com ponents[...]

  • Page 3

    Warnings 311320H 3 W arni ngs The f o llow ing gene ral wa r nings a re f or the setup , use, g roun ding, ma inten ance , and re pair o f this equi pmen t. Add itio nal, m ore spe cific war nings ma y be found thr ough out th e bo dy of thi s manua l where ap plicable. Symb ols appearin g in th e body of the man ual re f er to these ge nera l warn[...]

  • Page 4

    Warnings 4 311320H FIRE AND EXPLOSION HAZARD Flammabl e fumes, such as solv ent and paint fumes, in w ork area can i gni te or expl ode. T o help pre v ent fire and e xpl osion: • U se equipment only in we ll vent ilated area. • Eliminate al l ignition sourc es; such as pilo t lights, cigarettes , por tab le electric lamps, and plastic dr op cl[...]

  • Page 5

    Overall View 311320H 5 Overall Vie w Major Co mpon ents F IG . 1: Major Components Spring Retainer Case V alving Rod Cl osure Spring V a lving Rod P ositioner V a lving Rod Adjustment Screw V alving Rod Stop Bar V a lving Rod Pisto n Rod Tr i g g e r Air Cap Adjustment V alve Gun Bloc k Coupling Block Coupling Block Mounting Scre w[...]

  • Page 6

    Overal l View 6 311320H Centerline Componen ts F IG . 2: Centerline Components Coupling Bloc k Gaskets Air Cap Mixing Chamber Case Snap Ri ng Scree n Seal A-Iso Check V alve Scree n Screw Gun Bloc k Mounting Scre w O-Ring Closure Screw V alving Rod Assembly Felt Wiper Ret ainer Gun Block R-Resin Check V alv e Screen Mounting Scre w[...]

  • Page 7

    Operat ion Basics 311320H 7 Operation Basics Isocy anate H azard K eep A and B Components Separate Gr oundi ng Chec k y our l ocal ele ctrical code an d prop or- tione r manual for detailed grou nding in str uc- tions. Ground the spr a y guy thro ugh conne ction to a Graco- appro v ed gr ounded flui d supply hose . Couplin g Bloc k Install Coupli n[...]

  • Page 8

    Operati on Basics 8 311320H Manual V alve s 1. Open man ual v alv es using 5/16 in. n ut dr iver ; tur n manual valv es co unter clock- wise appro ximately three full turns. Do not open un til it bo ttoms o ut. 2. Close ma nual v alv es by turn ing fully clock- wise. F IG . 4: Man ual V alves Remove Coupling Block 1. Disconnect air ho se. 2. Clos e[...]

  • Page 9

    Operat ion Basics 311320H 9 Air Hose Connection T o CONNECT air hoses , pull back slee v e of f emale fi tting, inser t male fitting and slide slee v e f orwar d to secure connectio n. T o DISCO NNECT ai r hoses, pull ba ck sleev e of f ema le fitting an d remov e male fitting. F IG . 5: Air Hose Connection V a lving Ro d Adjustment Scre w Use t o [...]

  • Page 10

    Operati on Basics 10 311320H Air Cap Adjustment V alve Use to control amount of air tha t passes throug h air cap and o v er m ixing chamber ti p . Airflo w he lps k eep tip fr ee of spr a ye d chemica l. T oo m uch air ma y disto r t spra y patter n and create ov e rspread. T oo littl e air w ill not pr op- erly clean e nd of v a lving rod . T o O[...]

  • Page 11

    Initial Se t Up 311320H 11 Initial Set Up 1. Remo v e coup ling b loc k fro m gun. 2. Ch eck v alvi ng rod cl earanc e in c losed posi- tion. Rod shou ld extend ap proximate ly 1/ 32 in. (1 mm) bey ond tip o f mixing chamb er . If it does not, see V alving Ro d Adjustment proced ure , page 2 1. F IG . 9: V alving Rod (Closed P osition) 3. Ad just v[...]

  • Page 12

    Daily Start-Up 12 311320H Dail y Star t-Up 1. Co nnect air s upply to gun, pa ge 9. 2. Adjust air cap val ve , pag e 10. 3. Satu rate f elt in f e lt wiper with gun cleane r usin g flush can. 4. T r igge r gun multiple times to ens ure valving rod mo v es the fu ll tr av el quic kly and fre ely . 5. O pen b oth manua l valv es, pag e 8. 6. T est sp[...]

  • Page 13

    Pressure R elief Proced ure 311320H 13 Pressure Relief Pr ocedure 1. Clo se both manual valves. 2. T r igger gun once on to w aste ar ea to rel ie v e fluid p ressure in front e nd of gun . 3. Dis conn ect gu n air su pply , pa ge 9. 4. If gun i s remo v ed fr om coupli ng b loc k, f ol - low Clean Spray Gun Proced ure, page 18. Relie ve pr essure [...]

  • Page 14

    Spray Patt ern Adjustm ent 14 311320H Spra y P attern Adjustment 1. Ch eck v alvi ng rod c lea rance in closed pos i- tion. Rod shou ld extend ap proximate ly 1/ 32 in. (1 mm) bey ond tip o f mixing chamb er . If it does not, see V alving Ro d Adjustment proced ure , page 2 1. F IG . 10: V alving Rod (Closed P osition ) 2. Ad just v alving rod tra [...]

  • Page 15

    Spray Pattern Adj ustment 311320H 15 tern opens as a djustment is made (F IG . 12). F IG . 12: Opening Spr ay P attern 5. Fine tune spra y pattern: a. After y ou b ack out ad justment scre w , mak e fine adjustments (1/8 turns or less in eith er direct ion a s requir ed) to obta in patte r n sh own in F IG . 13. Mo ving the scre w out be yond th is[...]

  • Page 16

    Spray Patt ern Adjustm ent 16 311320H e. I f buildup re curs s hor tly aft er cl eani ng tip , remo v e air cap an d ensure inside is clean. Rein stall air cap and ensur e airflo w is prop erly set. If no buildup occurre d on air ca p , ch eck the fol- lowing items in this o rder and re adjust if ne ces- sar y: • Chec k V alving Rod Adju stment S[...]

  • Page 17

    Mainten ance 311320H 17 Maintenance Gun Service Kits Use either th e 1-Quar t Gun Ser vice Kit (29698 0) or 3-Ga llon G un Se r vic e Kit ( 2969 81) to per f orm daily flu shing of spra y gun witho ut disassemb ly . F IG . 15: 1-Quar t Gun Service Kit F or more inf or mation a bout the 1-Quar t Gun Service Kit, see man ual 311 340. F IG . 1 6: 3-Ga[...]

  • Page 18

    Maint ena nce 18 311320H Clean Spra y Gun Pr ocedure Thorou ghly flush gun b loc k with gun cleane r bef o re remo ving v alvin g rod o r mixing compo- nents from gu n block. Also a llow chemic als in spra y gun to cool b ef ore cleani ng. This pr ocedure mak e s use of the 1-Quar t or 3-Ga llon Gu n Ser vice Kit . 1. Clo se both manual valves. 2. [...]

  • Page 19

    Repair 311320H 19 Repair Filter Screen Remo v a l and Service 1. P erf orm Pressure Relief Pr ocedure (page 13) and Cle an Spra y Gun Proced ure, page 18. 2. Unthrea d screen mo unting screw . Remov e screen mo unting scre w and f ilter screen assembly fr om gun block. F IG . 17: Filter Screen Assemb ly 3. Remo v e scre en scre w r etainer ( snap r[...]

  • Page 20

    Repair 20 311320H Clean Injection Slots 1. P erf orm Pressure Relief Pr ocedure (page 13) and Cle an Spra y Gun Proced ure, page 18. 2. Remov e chec k v alv es . F IG . 18: Check V alves 3. Inspect chec k v alv es t o ensure slee v e is secured, a nd place chec k v alv es in sepa- rat e containers o f gun clean er . 4. Flush clea nout ports with gu[...]

  • Page 21

    Repair 311320H 21 V alving Rod Adjustment In clo sed po sition , valving rod sh ould e xtend appro ximately 1 /32 in. (1 mm) bey o nd tip of mixing chamber . If it does not, f o llow this p ro- cedure: F IG . 19: V alving Rod (Closed P osition ) 1. P erf orm Pressure Relief Pr ocedure (page 13) and Cle an Spra y Gun Proced ure, page 18. 2. Dis conn[...]

  • Page 22

    Repair 22 311320H Centerline Componen t Remo val 1. P erf orm Pressure Relief Pr ocedure (page 13) and Cle an Spra y Gun Proced ure, page 18. 2. Re mov e air cap by hand, tur nin g it count er- cloc kwise. 3. Remov e screen screw assembly . Flush and place i n gun cl eane r . 4. Remo v e chec k v alv es . Flush an d place i n gun cl eaner . 5. Flus[...]

  • Page 23

    Repair 311320H 23 a. Re mov e ball and spr ing assem bly . Hold ball an d unscre w assem b ly . If dir t or mater ia l build-up prev ents comple te remov a l of the sp r ing, scre w it bac k in. Soak assem bly in gun cleaner and try to remo v e it aga in. If ba ll and sp ring assemb ly cann ot be remo v ed unda m- aged, repla ce it. b . Use c heck [...]

  • Page 24

    Repair 24 311320H Centerline Componen t Installati on 1. Re mov e f elt wiper assembly from rear of mixing chamber . 2. Ensure internal mixing chambe r par ts are in place . 3. Inser t chamb er into gu n b loc k. Align ke y- w a y in chamb er with pin protrudin g from top of hole in bloc k. F IG . 25: Mixing Chamber Insertion 4. Press cham ber into[...]

  • Page 25

    Repair 311320H 25 10. Replace v alvin g rod spring an d spring retain er ca se. Grasp kn ob , pus h in, an d tur n clockwise to lock in place. 11. Replace air cap . 12. Replace chec k v alv es an d screen scre w assemb ly . 13. Replace cl osure scre w in top of gun b loc k. 14. Mount gun onto c ouplin g block. 15. Connect a ir suppl y to gun. 16. A[...]

  • Page 26

    Parts 26 311320H 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[...]

  • Page 27

    Parts 311320H 27 Model D Spray Gun Assembly ❄ Purcha se Air V alve Repai r Kit 29 6125 ( purchase s ep- arately). Includ es Needle V alv e P acking. ★ Not shown. d T able 1: Model D Gun Assembl y , Parts by Model Number Ref. No. Part No. Desc ription Qty . A 295591 He x nippl e, 1/ 8 in. MPT , steel 1 B 295185 Mounti ng scr ew , 1/2 i n. LG 2 C[...]

  • Page 28

    Parts 28 311320H T able 2: Model D Gun Assembl y , Parts by Mixing Chamber Size Mixing Chamber Size Reference Size 46 55 62 70 78 K (v alving r od) 296578 296579 296580 296581 296582 A C (chamber ) 296594 (N-800) 296595 (N-810) 296584 (L-800) 296590 (L-8 00-LM) 296585 (L-810) 296591 (L-8 10-LM) 296597 (N) 296586 (L) 296592 (L-L M) 296598 (N) 296587[...]

  • Page 29

    Parts 311320H 29 Standar d Mixing Chambers Six stan dard m ixing chambe rs are av ailable . The f ollo wing tab le pro vides a gener al desc ription about use an d ope ration al per f or ma nce of each c ham ber . Actu al patt er n s izes and o utp uts achie ved ma y v ary dependi ng on ma terial viscosity , hose length , condit ion of equipm ent, [...]

  • Page 30

    Parts 30 311320H Air Cylinder Assembl y P art Number 29 6632 ❄ P a r ts included in Air C ylinder Seal Kit 296725 (purcha se separ ately) ▲ Repl acement D anger and W arning la bels , tags , and car ds are a v aila bl e at no cost. Ref. No. P art No. Des cription Qty . A ❄ 107083 O-ring, fl uoroelastomer 1 B 295494 P an head machi ne screw , [...]

  • Page 31

    Parts 311320H 31 Coupling Bloc k Assembl y Model 295887 (Stand ard) Mode l 29 5884 (Reci rc) Model 29 5887 Model 29588 4 A G G E D C B A F E D E A D A G F B C Ref. No. Part No. Description Qty . A 295662 Flush seal pipe plug, 1/8 in. 2 B 295888 R-s wiv el fitti ng 1 C 295889 A- s wiv el fitti ng 1 D 296626 Man ual v alv e assembl y (pack of 2) - E [...]

  • Page 32

    Notes 32 311320H Notes[...]

  • Page 33

    Tech nical Data 311320H 33 T echnical Data * Theoretical: actual results will var y with operating conditions Category Data Maximum Flu id W or king P ressure 1000 psi (7 MPa, 70 bar) Maximum Air Inle t Pressure 100 psi (0 .75 MP a, 7.5 b ar) Minimum Air Inl et Pressure 90 psi (0.6 MP a, 6 ba r) Maximum Outpu t (flow r ate) 16 lbs/min (7.3 kg /min)[...]

  • Page 34

    All written and visual data contained in this document reflects the latest product information available at the time of publica tion. Graco rese rves the right t o make changes at any t ime without notice. For patent information, see ww w.graco.com/patents. Original instructions. This m anual contains English. MM 311320 Graco H eadquarte rs: Minnea[...]