Instruction/ maintenance manual of the product 247937 Graco Inc.
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Instr uctions Manual Electr ostatic PR O ™ Xs W aterborne Air Spra y Gun Smar t Model 247937 Standard Model 247936 #5 3 312900C ENG For use with conductive spray material s (waterborne and other materials less than 1 megohm-cm). For professional use ONL Y .
2 312900C T ab le of Contents W arnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 W ar ning Sym bol . . . . . . . . . . . . . . . . . . . . . . . . . 3 Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Overview .
Warnings 312900C 3 Wa r n i n g s W arning Symbol This symbol aler ts you to t he possibility of serious injur y or death if y ou do not f ollow the instructions. Notice The f ollowing wa r nings are fo r the setup, use, grounding, mainten ance, and repair of this equipment .
Warnings 4 312900C W ARNING W ARNING W ARNING W ARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injur y . • Do not opera te the unit when f atigued or under the influe nce of dr ugs or alcohol. • Do not e xceed the maximum w or king pressure or te mperature ratin g of the lowest r ated system com- ponent.
Overview 312900C 5 Overview How the Electr ostatic Air Spray Gun W orks The air hose su pplies air to the spra y gun. P ar t of the air operat es the turbine and the rest of the air atomiz es the fluid being sp ra yed.
Overview 6 312900C A. Air swivel inlet. Left-hand thread. B. Fluid inlet. C. T urbine air e xhaust. D. Air cap and nozzle. See page 13 for siz es. E. Fluid needle.
Overview 312900C 7 F. Fluid adjustment va lve . Adjusts fluid needle trav el. Use only in low flo w cond itions, to reduce needle wear . G. Fan air adjustment v alve . Adjusts f an size and shape. H. Atomizing air restrictor v alve . Restr icts atomizing air flow .
Overview 8 312900C J. ES indicator (247936 only). Green when ES is ON (I). K. V oltage (247937 onl y). Shows v oltage and current. Green/yello w=spra y , red=see Electrical T roub leshooting , page 22. NO T E: Nor mal current dra w f o r this model is higher and the yello w current bar will be lit.
Installation 312900C 9 Installation Install the System F IG . 1. shows a typical e lectrostatic ai r spra y sys tem. It is not an actual system des ign. F or assistance in designing a system to suit y our par ticular needs, contact yo ur Graco distributor .
Installation 10 312900C Fig. 1. Typica l Installation Key a b‡ c‡ d ‡e f g h k m n o ‡r s u‡ v w c‡ g q‡ t p l j‡ ES ON/OFF valve: I is ON, O is OFF ti12721 ti1498ax a Main Air Supply .
Installation 312900C 11 Connect the Air Line 1. Connect the Gr aco Grounded Air Supply Hose (R) between th e air supply line and the gun's air inlet (V) (F IG . 2). The gun air inlet f itting has a left-hand thread. Con nect the air supply hose ground wire (Q) to a true ear th ground .
Installation 12 312900C Connect the Exhaust T ube Press the e xhaust tube (38) on to the barbed adap ter on the bottom of th e gun handle. Secure the tube with the clamp (39) (F IG . 5). Connect the Fluid Line 1. Bef ore connecting the fluid line ( N), blo w it out with air and flush it with solvent.
Installation 312900C 13 Select a Fluid Nozzle and Air Cap The gun is supplied with P ar t No. 1972 66 Nozzle and 24A276 Air Cap. If you require a different size, ref er to T able 1 and T ab le 2 , and instr uction manual 309 419, or consult with your Graco dist ributor .
Installation 14 312900C Gr ounding The follo wing are minimum groundin g requirem ents for a basic elect rostatic syste m. Y our sys tem may include other equipment or objects which m ust be grounded. Check yo u r local electr ical code f or de tailed grounding instru ctions.
Installation 312900C 15 Chec k Electrical Grounding 1. Hav e a qu alified electr ician check the ele ctrical groundin g continuity of t he spra y gun and air hose . 2. T urn the ES ON/O FF valv e OFF . 3. T ur n off the air and fluid supply to the gu n.
Installation 16 312900C Chec k Fluid Viscosity T o chec k fluid viscosity you will need: • a viscosity cup • a stopw atch. 1. Completely submerge the viscosity cup in th e fluid. Lift the cup out q uickly , star ting the stopwat ch as soon as the cup is completely remo ved.
Installation 312900C 17 7. Set gun air r egulator to deliver minimum 40 psi (0 .28 MP a, 2.8 bar) at gun when tr iggered, f or maximum transf er efficiency . See tab le at right. 8. Spra y test patter n. Check atomiza tion. If over-atomi- zation occurs at minimum pressure, adjust rest rictor v alve.
Installation 18 312900C Flush 1. T ur n ES ON/OFF swi tch OFF (O). 2. Relie ve pr essure, page 19. 3. Change fluid source to solv ent, or disconnect fluid line and connect solv ent supply line to gun. 4. P oint gun into grounded metal pa il. Flush until clean solvent flo ws from gun.
Pressure Relief 312900C 19 Pressure Relief 1. T urn the ES ON/O FF valv e OFF . 2. T ur n off the air b leed valv es to the fluid source an d to the gun. 3. T r igger the gun into a g rounded metal wa ste con- tainer to reliev e the fluid press ure. 4.
Maintenance 20 312900C Maintenance Clean Gun Daily 1. Flush, p age 18. 2. a. Clean outside of gun with non-conductiv e, compatib le solvent. P oint gun down. b . Use soft, damp clo th. c. Do not immerse gun. 3. Remove air cap . 4. Clean air cap , retaining ring, and nozzle with soft brush and non-conductiv e, compatib le solvent.
Maintenance 312900C 21 Daily System Care 1. Relie ve pr essure, page 19. 2. Clean fluid and air filt ers. 3. Chec k for flui d leaks. Tighten all fitt ings. 4. Clean wor kpiece h angers. Use non- spark ing tools. 5. Chec k mov ement of trigger (T) and v alves (V).
Electrical Troubleshooting 22 312900C Electrical T roub leshooting NO TE: Chec k all possible rem edies in the T roub leshoot- ing Char t bef ore disassembling the gun.
Electrical Tests 312900C 23 Electrical T ests Electrical components inside the gun affect p erformance and safety . The follo win g procedur es test the co ndition of the po wer supply (18), barrel (16) and chargi ng probe (31), and elect rical cont inuity between components.
Electrical Tests 24 312900C T est P ower Suppl y Resistance 1. Remov e the power su pply (18), page 31. 2. Remov e the turbine alternator (19) from the po wer supply , page 32. 3. Measure resist ance from the po wer supply's ground strips (EE) to the condu ctive cont act in the center of the pow er supply seal (FF).
Spray Pattern Troubleshooting 312900C 25 Spra y P attern T r oubleshooting NO TE: Chec k all possible rem edies in the T roub leshoot- ing Char t be f ore disa ssembling the gun. NO TE: Some spr ay pattern problem s are caused by the improper balance be tween air and fluid.
Gun Operation Tro ubleshooting 26 312900C Gun Operation T roub leshooting NO TE: Chec k all possible rem edies in the T roub leshoot- ing Char t bef ore disassembling the gun .
Gun Repair 312900C 27 Gun Repair Prepare the Gun f or Repair • Check all possible remedies in Gun Oper ation T roubleshoo ting before disassemb ling the gun.
Gun Repair 28 312900C Replace Air Cap/Nozzle 1. Prepare gu n f or re pair page 27. 2. Remove probe. 3. Remove the retaining r ing (27) and air cap (9 ). See F IG . 13. 4. P oint gun up and squeez e tr igger while remo ving the fluid nozzle (7) assembly with the m ulti-tool (37).
Gun Repair 312900C 29 Remo ve Fluid P acking 1. Prepare t he gun f or repair , page 27. 2. Remov e the air cap and fluid nozzle, page 28. 3. Remove the fluid needle, page 28. 4. Loosen the trigger scre ws (8) and trigger (30). See F IG . 14. 5. Remove the pac king ro d (26), using the multi-too l (37).
Gun Repair 30 312900C Repair P ac king Rod Y ou ma y replace the packing rod as individual par ts or as an assemb ly . The assembly is pre- adjusted at the f actor y . Befor e installing the fluid pack ing rod into the gun barrel, make sure the interna l surfaces of the barrel are clean.
Gun Repair 312900C 31 Remo ve Barrel 1. Prepare t he gun f or repair , page 27. 2. Carefully loosen the n ut (54) from the bra cket fluid fitting (13) . Pull the tube (14 or 50a) out of th e fitting. Mak e sure both f err ules and the n ut stay with the tube.
Gun Repair 32 312900C Remo ve and Replace P ower Suppl y • Inspect the gun handle power supply ca vity f or dir t or moisture. Clean w ith a clean, dr y rag. • Do not e xpose gaske t (10) to solvent s. 1. Prepare gun for service, page 27. 2. Remov e the barrel (16), page 31.
Gun Repair 312900C 33 Remo ve and Replace T urbine Alternator Replace turbine alter nator bearings after 2000 hour s of operation. Or der P ar t No. 223688 Bearing Kit. 1. Prepare gu n f or repa ir , pa ge 27. 2. Remov e the power supp ly/alter nator assemb ly , page 32.
Gun Repair 34 312900C Repair Fluid Adjustment V alve 1. Prepare the gun for re pair , page 27. 2. Remove the fluid adjustmen t valv e (25). It can only be replaced as a complete assembly . See F IG . 20.. 3. Scre w the valv e (25) into the gun handle.
Gun Repair 312900C 35 Remo ve and Replace Atomizing Air Restrictor V alve 1. Prepare t he gun f or repair , page 27. 2. Remove the atomizing air restricto r valv e (23). Inspect the o-ring (23c*). Rep lace if necessar y . See F IG . 22. 3. Install a new atomizing air restr ictor valv e (23), or disassemb le and replace par ts individually .
Parts 36 312900C Pa r t s P ar t No. 247936 60 kV Electr ostatic Gun, Series A (Standa rd model) See page 38 f or detail vie ws of the alter nator (19), f an adjustment v alve (20), ES ON/ OFF valv e (22), and pac king rod (26).
Parts 312900C 37 P ar t No. 247937 60 kV Electrostat ic Gun, Series A (Smart model) See page 38 f or detail vie ws of the alter nator (19), f an adjustment v alve (20), ES ON/ OFF valv e (22), and pac king rod (26).
Parts 38 312900C MAX FLUID WPR: 100 PSI (7bar, 0.7 Mpa) MAX AIR WPR: 100 PSI (7bar, 0.7 Mpa) To avoid shock or explosion •Use properly grounded air hose •Read instruction manual I O ES MAX FLUID WPR: 100 PSI (7bar, 0.7 Mpa) 100 % KV M a 0 HI LO ES I O ES MAX AIR WPR: 100 PSI (7bar, 0.
Parts 312900C 39 P ar t No. 247936 60 kV Electr ostatic Gun, Series A (Standa rd model) P ar t No. 247937 60 kV Electrostat ic Gun, Series A (Smart model) Ref.
Parts 40 312900C * Included in Air Seal Repair Kit 244781. † Included in Fluid Seal Repair Kit 244 911. ❖ Rubber seal is not remov able . ▲ Replacement W ar ning labels, signs , tags, and cards are a vailab le at no cost. 26 24A331 NEEDLE; includes 26a-26h 1 26a 24A330 .
Accessories 312900C 41 Accessories Air Line Accessories AirFlex ™ Flex ible Groun ded Air Hose 100 psi (7 bar , 0.7 MP a) Maximum W orking Pressure 0.315 in. (8 mm) I D; 1/4 npsm(f) x 1/4 npsm(f) left -hand thread 244963 6 ft (1.8 m) 244964 15 ft (4.
Accessories 42 312900C Gun Accessories Gun Repair Kits 244781 Air Seal Repair Kit 244911 Fluid Seal Repair Kit Push/Pull Fan Air V alve 244912 F or quic k change of f an size. ES Alwa ys On Kit 244913 Replaces inlet fitting with ball v alve to shut off air during flushi ng.
Technical Data 312900C 43 Te c h n i c a l D a t a Category Data Maximum Working Flu id Pressure ....... ................ ............. 100 psi (0 .7 MP a, 7 bar) Maximum Working Air P ressure ................ ............. ........... 100 psi (0.7 MPa, 7 bar) Maximum Fluid Ope rating T emperature .
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. This manual contains English. MM 312900 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC.
An important point after buying a device Graco Inc. 247937 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco Inc. 247937 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco Inc. 247937 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. 247937 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. 247937 will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. 247937, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco Inc. 247937.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 247937. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 247937 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
