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Graco 222300 manual

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Table of contents for the manual

  • Page 1

    307912 Rev . AC Part No. 222300 shown 06443 INSTRUCTIONS-P ARTS LIST INSTRUCTIONS This manual contains important warnings and information. READ AND KEEP FOR REFERENCE. Model PRO 3500sc  Electrostatic Air Spray Gun 65 kV , MANUAL GUN 100 psi (7 bar , 0.7 MPa) Maximum Working Pressure Part No. 222300, Series B With T wo-Finger T rigger Part No. 22[...]

  • Page 2

    2 307912 T able of Contents Symbols 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W arnings 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How the Electrostatic Air Spray Gun W orks 5 . . . . Installation 5[...]

  • Page 3

    307912 3 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[...]

  • Page 4

    4 307912 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 a 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 [...]

  • Page 5

    307912 5 Introduction How the Electrostatic Air Spray Gun Works The air hose supplies air to the spray gun. Part of the air operates the turbine and the rest of the air atomizes the fluid being sprayed. The turbine generates power , which is converted by the power cartridge, to supply high voltage current to the gun ’ s ionizing electrode. The pu[...]

  • Page 6

    6 307912 Installation 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 Fluid Supply Line Shutoff V alve M Fluid P[...]

  • Page 7

    307912 7 Installation Connect the Air Line (Refer to Fig. 1) W ARNING ELECTRIC SHOCK HAZARD T o reduce the risk of an electric shock or other serious injury , the air supply hose must be electrically connected to a true earth ground. Use Only Graco Electrically Con- ductive Air Supply Hose. 1. Connect the Graco Electrically Conductive Air Supply Ho[...]

  • Page 8

    8 307912 Installation Ground the System W ARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD When operating the electrostatic device, any ungrounded objects in the spray area (such as people, containers, tools, etc.) can become electrically charged. Improper grounding can result in static sparking, which can cause a fire, explo- sion, or electric sh[...]

  • Page 9

    307912 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 [...]

  • Page 10

    10 307912 Notes[...]

  • Page 11

    307912 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[...]

  • Page 12

    12 307912 Operation Fig. 4 06443 05151A DD 31 26 43 1 20 45 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 185158[...]

  • Page 13

    307912 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[...]

  • Page 14

    14 307912 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 [...]

  • Page 15

    307912 15 Maintenance Clean the Air Cap and Fluid Nozzle CAUTION Do not use metal tools to clean the air cap or spray nozzle holes as this could scratch them, and make sure the electrode wire is not damaged. Scratches in the air cap or spray nozzle or a damaged electrode wire can distort the spray pattern. Equipment needed:  Soft bristle brush ?[...]

  • Page 16

    16 307912 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[...]

  • Page 17

    307912 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. The packing nut is loose Tighten the packing nut; see page 26. Air leakage from the front of the gun The air valve is not seating properly . Cle[...]

  • Page 18

    18 307912 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[...]

  • Page 19

    307912 19 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[...]

  • Page 20

    20 307912 Electrical T ests T est Power Supply Resistance Remove the power cartridge (18) from the gun handle. See Power Cartridge Replacement on page 27. Remove the turbine alternator from the power car- tridge. See T urbine Alternator Removal on page 28. Measure the resistance from the power supply ’ s ground contact point (EE) to the contact s[...]

  • Page 21

    307912 21 Electrical T ests T est Resistor Stud Resistance (continued) If the resistance is outside the specified range, remove the resistor stud (22). See Air Cap/Nozzle/Resistor Stud Replacement on page 22. Check the resistance between the black resistor stud contact ring (D) and the needle contact ring (E). Refer to Fig. 10. Y ou may have to pre[...]

  • Page 22

    22 307912 Service Prepare the Gun for Service 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 [...]

  • Page 23

    307912 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. 7. Install the air cap assembly (1, 2, 8). T est the gun resistance as instructed on page 19. Fig. 1 1 20 [...]

  • Page 24

    24 307912 Service Barrel Removal 1. Prepare the gun for service as instructed on page 22. 2. Carefully loosen the nut from the fluid fitting (10). 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. Hold the gun[...]

  • Page 25

    307912 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 remove the trigger (13). 4. Remove the packing cartridge and needle assem- bly (28), using the multi-t[...]

  • Page 26

    26 307912 Service Fluid Packing and Needle Repair The fluid packings and needle can be replaced as individual parts or as assemblies. The overall assem- bly is pre-adjusted at the factory . NOTE: Before installing the packing and needle as- sembly into the gun barrel, make sure the internal surfaces of the barrel are clean. Remove any residue with [...]

  • Page 27

    307912 27 Service Fig. 18 7 35 37a 37b 18b 18c 18a 18 18d 37 F 05160   Apply a very light coat of lubricant  Do not expose to solvents   Power Cartridge Replacement NOTE: The power cartridge consists of the alternator (37), power supply (18) and retaining ring (35). See Fig. 18. 1. Prepare the gun for service as instructed on page 22[...]

  • Page 28

    28 307912 Service T urbine Alternator Replacement NOTE: Replace turbine bearings after 2,000 hours of operation. See your authorized Graco representative. 1. Prepare the gun for service as instructed on page 22. 2. Remove the power cartridge from the gun handle as instructed on page 27. 3. Squeeze the two ends of the retaining ring (35) together an[...]

  • Page 29

    307912 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 valve: 3. Remove the retaining ring (4[...]

  • Page 30

    30 307912 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[...]

  • Page 31

    307912 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[...]

  • Page 32

    32 307912 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[...]

  • Page 33

    307912 33 Notes[...]

  • Page 34

    34 307912 Parts Item 18 includes items 18a to 18f Item 28 includes items 28a to 28h Item 37 includes items 37a and 37b Item 43 includes items 43b to 43e Item 45 includes items 45a to 45e 6 7 4 13 3 1 8 2 22 20 21 25* 28 35 34  44 45d 23  39 40 42  66 17 15 19 33 12 14 10 *29 24 26 36 46 38 47 32 31 9* 16 41  37a  37b 18a  18c 18b [...]

  • Page 35

    307912 35 Parts W ARNING Some PRO 3500sc 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[...]

  • Page 36

    36 307912 Accessories Use Only Genuine Graco Parts and 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) 21[...]

  • Page 37

    307912 37 Accessories Use Only Genuine Graco Parts and 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 Appro[...]

  • Page 38

    38 307912 Accessories Use Only Genuine Graco Parts and Accessories MISCELLANEOUS ACCESSORIES Snap Ring Pliers 1 10090 For removing the ES ON-OFF V alve Retaining Ring (item 47 in Parts List). Paint Resistance Meter 722886 Used with 722860 Paint Probe to measure resistance of paint. Not for use in Hazardous areas. Paint Probe 722860 Used with 722886[...]

  • Page 39

    307912 39 T echnical Data Category Data Gun Weight 1.87 lb (0.85 Kg) Gun Length 9.5 in. (240 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 – 65 kV Paint Resistivity Range 7 [...]

  • Page 40

    40 307912 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 an authorized Graco distributor to the original purchaser for use. With the exception of any special, extended , or limited warranty published by Graco, Graco will, for[...]