Graco Inc. PRO 4500sc manuale d’uso

308131 Rev . R 0365 Part No. 224200 shown NOTE: Any modification of genuine Graco parts or replacement of parts with non-Graco parts will void agency approvals. U.S. P A TENT NO. 4,290,091; 4,219,865; 4,497,447; 4,462,061; 4,660,774; 5,063,350; 5,080,289; D350,387 Patented 1986, 1987 Canada Brevete 1986, 1987 U.K. P A TENT NO. 2,147,158; 2,142,559B[...]

2 308131[...]

308131 3 T able of Contents Symbols 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W arnings 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the System 7 . . . . . . . . . . . . . . . . . . . . .[...]

4 308131 W ARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and result in a fire, explosion, or electric shock.  Electrostatic equipment must be used only by trained, qualified personnel who understand the requirements stated in this instruction man[...]

308131 5 W ARNING PRESSURIZED EQUIPMENT HAZARD Spray from the gun, hose leaks, or ruptured components can splash fluid in the eyes or on the skin and cause serious injury .  Do not point the spray gun at anyone or any part of the body .  Do not stop or deflect fluid leaks with your hand, body , glove, or rag.  Follow the Pressure Relief Pr[...]

6 308131 Installation 0389 Non-Hazardous Area Hazardous Area KEY A Main Air Supply Line B* V entilation Fan Interlock Solenoid V alve C* Main Air Supply Shutoff V alve (bleed-type) D Air & Water Separator E* Pump Air Supply Shutoff V alve (bleed-type) F Air Line Lubricator G Air Pressure Regulator H Pump J* Pump Ground Wire K Fluid Filter L Flu[...]

308131 7 Installation Installing the System W ARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Installing and servicing this equipment requires access to parts which may cause electric shock or other serious injury if work is not performed properly .  Do not install or service this equip- ment unless you are trained and qualified.  Be sure y[...]

8 308131 Installation Connect the Exhaust T ube Press the exhaust tube (provided) onto the barbed adapter on the bottom of the gun handle. Secure the tube with the clamp provided. Refer to page 34. Connect the Fluid Line (Refer to Fig. 1, page 6) 1. Before connecting the fluid line (N), blow it out with air and flush it with solvent. Use solvent wh[...]

308131 9 Installation Check the Electrical Grounding (See Fig. 2) W ARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Megohmmeter P/N 241079 (AA-see Fig. 2) is not approved for use in a hazard- ous area. T o reduce the risk of sparking, do not use the megohmmeter to check electrical grounding unless:  The gun has been removed from the hazardous [...]

10 308131 Notes[...]

308131 1 1 Operation Pressure Relief Procedure W ARNING PRESSURIZED EQUIPMENT HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying acci- dentally . T o reduce the risk of an injury from electric shock, accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Procedur[...]

12 308131 Operation 0369A Fig. 4 0365 20 1 26 45 43g 31 DD 43c Selecting a Fluid Nozzle and Air Cap W ARNING PRESSURIZED EQUIPMENT HAZARD T o reduce the risk of an injury , follow the Pressure Relief Procedure on page 1 1 before removing or installing a fluid nozzle and/or air cap. The gun is supplied with a 0.059 in. (1.5 mm) fluid nozzle, P/N 185[...]

308131 13 Operation Operating the Spray Gun (continued) 1. Follow the Operating Checklist on page 1 1. 2. T o adjust the air cap for a vertical or horizontal spray pattern, first make sure the pressure is relieved. Then loosen the air cap retaining nut, and rotate the air cap as directed in Fig. 5. T ighten the retaining nut until the air cap is he[...]

14 308131 Operation Shutdown W ARNING PRESSURIZED EQUIPMENT HAZARD T o reduce the risk of an injury , follow the Pressure Relief Procedure on page 1 1 whenever you stop spraying and whenever you are instructed to relieve pressure. 1. Relieve the pressure. 2. Flush and clean the equipment. Follow the instruc- tion in Maintenance . Maintenance Daily [...]

308131 15 Maintenance Clean the Air Cap and Fluid Nozzle CAUTION Do not use metal tools to clean the air cap or spray tip holes as this could scratch them, and make sure the electrode wire is not damaged. Scratches in the air cap or spray tip or a damaged electrode wire can distort the spray pattern. Equipment needed:  Soft bristle brush  Com[...]

16 308131 T roubleshooting W ARNING ELECTRIC SHOCK HAZARD Installing and servicing this equipment requires access to parts which may cause an electric shock or other serious injury if the work is not performed properly . Do not install or service this equipment unless you are trained and qualified. W ARNING PRESSURIZED EQUIPMENT HAZARD T o reduce t[...]

308131 17 T roubleshooting Gun Operation T roubleshooting Problem Cause Solution Fluid leakage from the fluid packing area The needle packings or shaft are worn. Replace the packings or shaft; see page 26. Air leakage from the front of the gun The air valve is not seating properly . Clean and service the air valve; see page 30. The air valve o-ring[...]

18 308131 T roubleshooting Electrical T roubleshooting Problem Cause Solution Poor wrap-around The ES ON-OFF lever is in the OFF (O) position.* Turn the lever to ON (1). The distance between the gun and work- piece is incorrect. Adjust the spraying distance to 8 to 12 inches (203 to 305 mm) The parts are poorly grounded. Clean the workpiece hangers[...]

308131 19 T roubleshooting Electrical T roubleshooting with SVR NOTE: Additional gun troubleshooting can be done using the Remote Spraying V oltage Readout ( SVR  ) . See Accessories to order the SVR and the RF transmitting power supply . Problem Cause Solution Lower than normal voltage output Insufficient air pressure to the turbine alternator [...]

20 308131 Electrical T ests The performance and safety of the spray gun are directly affected by the condition of the electrical components contained inside the gun. The electrical tests below can be used to determine the condition of the power supply (18) and the resistor stud (22) as well as the continuity of the electrical path between the compo[...]

308131 21 Electrical T ests T est Power Supply Resistance (See Fig. 9) Remove the power supply (18) from the gun. See Power Supply Removal and Replacement , page 27. Remove the turbine alternator from the power supply . See T urbine Alternator Removal and Replacement , page 28. Measure the resistance from the power supply ’ s ground contact point[...]

22 308131 Service Prepare the Gun for Service W ARNING ELECTRIC SHOCK HAZARD Installing and servicing this equipment requires access to parts that may cause electric shock or other serious injury if the work is not performed properly . Do not install or service this equipment unless you are trained and qualified. W ARNING PRESSURIZED EQUIPMENT HAZA[...]

308131 23 Service Air Cap/Nozzle/Resistor Stud Replacement (continued) 6. T rigger the gun while installing the fluid nozzle (21) and resistor stud (22) assembly with the multi-tool (62). Tighten until the fluid nozzle seats in the gun barrel (1/8 to 1/4 turn past hand tight). 7. Install air cap assembly (1, 8, 49) and retaining ring (2). T est gun[...]

24 308131 Service Barrel Removal 1. Prepare the gun for service as instructed on page 22. 2. Carefully loosen the nut (14) from the bracket/fluid fitting (16). Pull the tube (12) out of the fitting. Make sure both ferrules and the nut stay with the tube. See Fig. 14. 3. Using the wrench (63) supplied, loosen the three socket head cap screws (5). 4.[...]

308131 25 Service Fluid Packing Removal 1. Prepare the gun for service as instructed on page 22. 2. Remove the air cap assembly , fluid nozzle and resistor stud and electrode as instructed on page 23. 3. Loosen the trigger screws (4) far enough to re- move the trigger (13). 4. Remove the needle assembly (28), using the multi-tool (62). See Fig. 16.[...]

26 308131 Service Fluid Packing Rod Repair The fluid packing rod can be replaced as individual parts or as an assembly . The overall assembly is pre-adjusted at the factory . NOTE: Before installing the fluid packing rod into the gun barrel, make sure the internal surfaces of the barrel are clean. Remove any residue with a soft brush or cloth. Chec[...]

308131 27 Service Fig. 18 7 35 37a 37b 18a 18 37 F 3 18b 18c 18f G   Apply a very light coat of lubricant  Do not expose to solvents  0384B B  Power Supply Removal and Replacement NOTES:  T o avoid a loss in electrostatic performance, inspect the gun handle power supply cavity for dirt or mois- ture. Clean the cavity with a clean,[...]

28 308131 Service T urbine Alternator Removal and Replacement NOTE: Replace turbine bearings after 2000 hours of operation. See your authorized Graco representative. 1. Prepare the gun for service as instructed on page 22. 2. Remove the power supply from the gun handle as instructed on page 27. 3. Squeeze the two ends of the retaining ring (35) tog[...]

308131 29 Service Fan Air Adjustment V alve Repair 1. Prepare the gun for service as instructed on page 22. 2. Place a wrench on the flats of the valve housing and remove it from the handle. See Fig. 20. NOTE: The fan air valve (43) can be replaced as an assembly or as individual parts. T o disassemble the fan air valve: 1. Rotate the adjustment kn[...]

30 308131 Service Fluid Adjustment Assembly Repair 1. Prepare the gun for service as instructed on page 22. 2. Using a 14 mm socket wrench, remove the fluid adjustment assembly (45). See Fig. 21. 3. T urn the stem (45a) fully clockwise and remove the sleeve stop (45e). 4. T o completely disassemble the fluid adjustment assembly , the sleeve stop (4[...]

308131 31 Service Air T rigger V alve Repair 1. Prepare the gun for service as instructed on page 22. 2. Using a 14 mm socket wrench, remove the fluid adjustment assembly (45), o-ring (23) and spring (44). See Fig. 21. CAUTION Clean all parts in non-conductive solvent compatible with the fluid being used, such as xylol or mineral spirits. Use of co[...]

32 308131 Service ES ON-OFF V alve Repair 1. Prepare the gun for service as instructed on page 22. 2. Loosen the set screw (24) with the 2 mm hex key (69) provided. Remove the lever (26) from the valve. See Fig. 23. W ARNING MOVING P ARTS HAZARD T o reduce the risk of eye injury , be sure to wear safety glasses when removing or installing the retai[...]

308131 33 Notes[...]

34 308131 Parts 28c 28a *28d *28e *28h DET AIL A 1, 75 8 2 22 21 *25 See Detail A 28b 20 43b 43d 43f 43c 43e  43h 43g 5 3  34 18a  18b 18c 18f 35 37b 37a  REF . 12 14 9* 66 67 17 16 33 19 15 41 39 44 45c 46 38 36 47 32 26 24 30 REF . 40 42  10 29* 12 45d 45b 45a 6 4 13 31 19  7 23   49 0601 *28f *28g 45e 12 16 13 80 79 33 Pa[...]

308131 35 Parts W ARNING Some PRO 4500sc Gun replacement parts look similar to other PRO Gun parts but are not interchangeable! When servicing, do not mix or use other PRO Gun parts! Use of parts other than those specified in the parts list below could alter the grounding continuity of the gun, cause parts to leak or rupture, or cause the gun to ma[...]

36 308131 Accessories AIR LINE ACCESSORIES Conductive Air Supply Hose; black 100 psi (7 bar , 0.7 MPa) Maximum Working Pressure FM Approved; Color coded black; 0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) left-hand thread 220444 6 ft (1.8 m) 218100 15 ft (5 m) 218101 25 ft (8 m) 218102 36 ft (1 1 m) 218103 50 ft (15 m) 2201 19 75 ft (23 m) 220120[...]

308131 37 Accessories FLUID LINE ACCESSORIES Fluid Hose Assemblies (Nylon) 225 psi (14 bar , 1.4 MPa) Maximum Working Pressure FM Approved; 1/4 in. (6.35 mm) ID, 3/8 npsm(fbe) 215637 25 ft (8 m) 215638 50 ft (15 m) Fluid Hose Assemblies (Nylon) 500 psi (35 bar , 3.5 MPa) Maximum Working Pressure FM Approved; 1/4 in. (6.35 mm) ID, 3/8 npsm(fbe) 2160[...]

38 308131 Accessories GUN SYSTEMS Gun System 224637 With 36 ft (1 1 m) conductive air hose. Includes: Part N o . Description Qty 224200 PRO 4500sc ES Spray Gun 1 223071 Conductive Air Hose, 36 ft (1 1 m) 1 206199 Air Regulator with Gauge 1 106149 Air Filter 1 158491 Hex Nipple 1 158212 Bushing 1 164672 Hex Red. Nipple 1 Gun System 224638 With 50 ft[...]

308131 39 T echnical Data Category Data Gun Weight 34.3 oz (974 g) Gun Length 1 1.1 in (283 mm) Maximum Working Pressure 100 psi (7 bar , 0.7 MPa) Air Pressure Operating Range 0 – 100 psi (0 – 7 bar, 0 – 0.7 MPa) Fluid Pressure Operating Range 0 – 100 psi (0 – 7 bar, 0 – 0.7 MPa) V oltage Output 0 – 85 kV Short Circuit Current Output [...]

40 308131 Graco Standard W arranty 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 a n authorized Graco distributor to the original purchaser for use. With the exception of any special, extended , or limited warranty published by Graco, Graco will, fo[...]