Manuale d’uso / di manutenzione del prodotto 3500WB del fabbricante Graco Inc.
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308584 Rev . H U.S. P A TENT NO. 4,290,091; 4,219,865; 4,497,447; 4,462,061; 4,660,774 ; D313,064; 4,978,075 Patented 1986, 1987 Canada Brevete 1986, 1987 U.
2 308584 T able of Contents Symbols 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . W arnings 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction 6 . . . . . . . . . . . . . . . . . .
308584 3 W ARNING ELECTRIC SHOCK HAZARD Improper grounding or an improper setup can cause a hazardous condition and result in an electric shock or other serious injury . Ground the equipment, personnel in or close to the spray area, the object being sprayed, and all other electrically conductive objects in the spray area.
4 308584 W ARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and result in a fire or explosion. Electrostatic equipment must be used only by trained, qualified personnel who understand the requirements stated in this instruction manual.
308584 5 W ARNING INSTRUCTIONS EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result in a serious injury . This equipment is for professional use only . Read all the instruction manuals, tags, and labels before operating the equipment.
6 308584 Introduction Spraying W aterborne Fluids Electrostatically The PRO 3500wb spray gun is a 60 kV electrostatic spray gun that is designed to spray conductive, water- borne, non-flammable fluids.
308584 7 Introduction KEY -Fig. 1 A Air Cap B Electrode C Retaining Nut D Gun Barrel E Gun Handle F Air Inlet G Fluid Inlet H T rigger J Fluid Adjustment Knob K Exhaust T ube L Hook M ES Indicator Light N ES ON-OFF Lever P Fan Air Adjustment V alve R Atomizing Air V alve S Power Supply T T urbine/Alternator 05404 Fig.
8 308584 Introduction Graco W aterborne Fluid Hose (purchased separately) A Graco waterborne fluid hose must be used between the voltage isolation system fluid outlet and the spray gun fluid inlet. This fluid hose consists of three layers (see Fig. 2): Inner Hose Layer (EE): is a PT FE tube.
308584 9 Installation Installing the System W ARNING ELECTRIC SHOCK HAZARD Installing and servicing this equipment requires access to parts which could 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.
10 308584 Installation KEY -Fig. 3 A Air Regulator B Spray Gun Air Shut-of f V alve C Gun Fluid Regulator D Graco Waterborne Fluid Hose E Gun Fluid Inlet F PRO 3500wb Spray Gun G Gun Air Inlet H Graco.
308584 11 Installation Install the Air Line Accessories 1. Install an air line filter and an air and water separa- tor on the main air supply line to ensure a dry , clean air supply to the gun. Dirt and moisture can ruin the appearance of your finished workpiece and can cause the gun to malfunction.
12 308584 Installation Filter the Fluid Filter the fluid to remove coarse particles and sediment which could clog the fluid nozzle. The filter must be installed at the grounded fluid inlet to the voltage isolation system.
308584 13 Installation Connect the Fluid Hose (continued) 5. Insert the hose (Y) into the hose ferrule housing (79). See Fig. 5. 6. Push the hose firmly through the fluid inlet tube (75) until the o-rings on the hose barbed fitting are seated and the hose bottoms out.
14 308584 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.
308584 15 Installation Check the Electrical Grounding 1. Have a qualified electrician check the electrical grounding continuity of the spray gun and air hose. 2. Make sure the red Graco electrically conductive air hose (EE) is connected to the gun and the hose ground wire is connected to a true earth ground.
16 308584 Operation Fluid V oltage Discharge and Grounding Procedure W ARNING ELECTRIC SHOCK HAZARD The high voltage fluid supply is charged with high voltage until the voltage is dis- charged. Contact with the charged com- ponents of the isolation system or spray gun elec- trode will cause an electric shock.
308584 17 Operation Operating Checklist Check the following list daily , before starting to operate the system, to help ensure safe, efficient operation. ____ 1. All the operators are properly trained to safely operate an electrostatic, waterborne, air spray system as instructed in this manual and the voltage isolation system manual.
18 308584 Operation Operating the Spray Gun W ARNING FIRE AND EXPLOSION HAZARD T o reduce the risk of fire and explosion, only use this equipment to spray non- flammable, waterborne fluids as defined on the front cover of this manual. W ARNING ELECTRIC SHOCK HAZARD Contact with the charged components of the spray gun will cause an electric shock.
308584 19 Operation 7. Set the atomizing air valve (R) about 1.5 turns out for most applications. The Atomizing Air V alve Adjustment chart shows the effect of the atomiz- ing air valve adjustment on the air cap air flow . 8. Adjust the pattern width with the fan air valve (P).
20 308584 Operation Shutdown W ARNING PRESSURIZED EQUIPMENT HAZARD T o reduce the risk of an injury , follow the Pressure Relief Procedure on page 16 whenever you stop spraying and whenever you are instructed to relieve pressure. 1. Relieve the pressure.
308584 21 Maintenance Clean the Air Cap and Fluid Nozzle Equipment needed: Soft bristle brush Non-flammable cleaning fluid CAUTION Do not use metal tools to clean the air cap or fluid nozzle holes as this could scratch them, and make sure the electrode wire is not damaged.
22 308584 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.
308584 23 T roubleshooting V oltage Loss T roubleshooting (continued) 7. T o eliminate air gaps in the fluid column, spray enough fluid to purge the air out between the voltage isolation system and the spray gun.
24 308584 T roubleshooting V oltage Loss T roubleshooting (continued) 1 1. A dielectric breakdown is most likely in one of the following three areas. Repair or replace the com- ponent that is failing. Fluid hose Check for leakage or any bulges in the outer jacket, which may indicate a pin-hole leak through the P TFE layer .
308584 25 T roubleshooting Spray Pattern T roubleshooting NOTE: Some spray pattern problems are caused by the improper balance between air and fluid. Problem Cause Solution Fluttering or spitting spray The fluid supply is insufficient. Adjust the fluid regulator , or fill the fluid supply .
26 308584 T roubleshooting Poor Electrostatic Wrap T roubleshooting Problem Cause Solution The system is holding voltage but there is poor electrostatic wrap on The distance between the gun and workpiece is incorrect. Adjust the spraying distance to 8 to 12 inches (203 to 305 mm).
308584 27 T roubleshooting Gun Operation T roubleshooting (continued) Excessive spray fog The air pressure is too high. Reduce the air cap air pressure by closing the atomizing air valve more or decreasing the gun air inlet pres- sure; use the least air pressure needed for good results.
28 308584 Electrical T ests W ARNING ELECTRIC SHOCK HAZARD Follow the Fluid V oltage Discharge and Grounding Procedure on page 16 before checking or servicing and when- ever you are instructed to discharge the voltage to ensure the voltage is discharged and avoid serious injury from an electric shock.
308584 29 Electrical T ests T est Power Supply Resistance 1. Prepare the gun for service as instructed on page 30. 2. Remove the power supply (18) from the gun handle as instructed on page 40. 3. Remove the turbine alternator (37) from the power supply as instructed on page 41.
30 308584 Service T ools Included with the Gun Multi-tool Ball-end W rench 2 mm Hex Key Allen Wrench Prepare the Gun for Service NOTE: Check all the possible remedies in T roubleshoot - ing before disassembling the gun. If the plastic parts of the gun must be held in a vise, use padded vise jaws to avoid damaging parts.
308584 31 Service Air Cap/Nozzle/Resistor Stud Replacement (continued) 4. Unscrew the resistor stud (22) from the fluid nozzle (21) with the multi-tool (62). See Fig. 17. W ARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD The resistor stud contact ring (D) is a conductive contact ring, not a sealing o-ring.
32 308584 Service Electrode Needle Replacement 1. Prepare the gun for service as instructed on page 30. 2. Remove the air cap, nozzle and resistor stud as instructed on page 30. 3. Unscrew and remove the electrode needle (20) with the multi-tool (62).
308584 33 Service Fluid Packing Rod Removal and Repair Preventative Maintenance CAUTION If the conductive fluid is allowed to leak through the packings, it will eventually cause an electrical short through the packings and along the gun barrel, resulting in a loss of voltage at the tip of the gun.
34 308584 Service Fluid Packing Rod Removal and Repair (continued) 7. Place the packing nut (28c) and o-ring (28f) on the fluid rod (28a). Flats on the packing nut must be facing toward the back of the fluid rod. 8. Fill the entire inner cavity of the spacer (28h) with the dielectric grease included with the gun.
308584 35 Service Fan Air Adjustment V alve Repair NOTE: The fan air valve (43) can be replaced as an assembly or as individual parts. 1. Prepare the gun for service as instructed on page 30. 2. Place a wrench on the flats of the valve housing and remove it from the handle.
36 308584 Service Fluid Adjustment Assembly Repair (continued) 5. T o remove the sleeve (45d), hold the cap (45c) and turn the sleeve stop (45e) counterclockwise with a pliers. 6. Remove the stem (45a) and o-ring (45b). 7. Repair or replace any damaged parts.
308584 37 Service Atomizing Air V alve Repair 1. Prepare the gun for service as instructed on page 30. 2. Remove the fan air adjustment valve (43) as instructed on page 35. CAUTION T o avoid damaging the atomizing air valve, the fan air adjustment valve must be removed before remov- ing the atomizing air valve.
38 308584 Service ES ON-OFF V alve Repair 1. Prepare the gun for service as instructed on page 30. 2. Loosen the set screw (24) with the 2 mm hex key (69).
308584 39 Service Barrel Removal 1. Prepare the gun for service as instructed on page 30. 2. Loosen the nut (78) from the ferrule housing (79). Pull the ferrule housing through the gun bracket (76). See Fig. 25. 3. Loosen the three barrel screws (5) with the ball- end wrench (63).
40 308584 Service Power Supply Replacement 1. Prepare the gun for service as instructed on page 30. 2. Remove the barrel as instructed on page 39. CAUTION Be careful when handling the power supply to avoid damaging it. 3. Grasp the power supply with your hand.
308584 41 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 30. 2. Remove the barrel as instructed on page 39.
42 308584 Service Graco W aterborne Fluid Hose Repair W ARNING FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD T o reduce the risk of a fire, explosion, or electric shock: Follow the Fluid V oltage Dis.
308584 43 PRO 3500sc Gun Conversion NOTE: See page 48 to order the conversion kit, part no. 2231 14. The fluid hose and air hose are not in- cluded with this kit. See page 48 to order hoses. Use only the electrically conductive air supply hoses and waterborne fluid hoses specified in this manual.
44 308584 PRO 3500sc Gun Conversion Fig. 31 8* H 20* L 28* N P M *80 91 *75 *78 *76 *79 *77 D E F Apply a very light coat of lubricant to the o-ring on the outside of the fluid packing rod (28). Apply dielectric grease to the o-rings (80, 81) and tube (75) threads.
308584 45 PRO 3500sc Gun Conversion 6. Assemble the two o-rings (80*, 81*) onto the fluid inlet tube (75*). Apply dielectric grease to the o-rings and tube threads. 7. Screw the fluid inlet tube (75*) into the barrel inlet until it bottoms out. a. Apply dielectric grease (82) to the O.
46 308584 Spray Gun Parts 6 4 13 3 1 8 2 22 20 21 25* 28 35 **34 45d 23** 39 42** 66 17 15 19 33 26 24 36 46 38 47 32 31 41** **37a 37b 18a** 18b** 18c 30 5 18d 19** See Detail A 28a 28g* 28b 28d* 28e.
308584 47 Spray Gun Parts W ARNING EQUIPMENT MISUSE HAZARD Use only genuine Graco replacement parts. Using non-Graco parts could alter the gun ’ s grounding continuity or cause parts to rupture or fail, which could result in a serious injury and property damage.
48 308584 Accessories Use Only Genuine Graco Parts and Accessories W aterborne Fluid Hose Assembly 100 psi (0.7 MPa, 7 bar) Maximum Working Pressure T o connect between the Graco H 2 O PRO V oltage Block and the gun; 0.25 in. (6.35 mm) ID; PT FE Fluid Hose Assy .
308584 49 Accessories Use Only Genuine Graco Parts and Accessories Snap Ring Pliers 1 10090 For removing the ES ON-OFF V alve Retaining Ring (item 47 in Parts List). Gun High V oltage Probe & Meter 217452 For direct measurement of the gun output voltage.
50 308584 N.
308584 51 T echnical Data Category Data Weight 1.87 lb (0.85 Kg) Gun Length 9.5 in. (240 mm) Maximum Working Pressure 100 psi (0.7 MPa, 7 bar) Air Pressure Operating Range 0 – 100 psi (0 – 0.7 MPa, 0 – 7 bar) Fluid Pressure Operating Range 0 – 100 psi (0 – 0.
52 308584 The Graco W arranty and Disclaimers W ARRANTY Graco warrants all equipment manufactured by it 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.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Graco Inc. 3500WB è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Graco Inc. 3500WB - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Graco Inc. 3500WB imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Graco Inc. 3500WB ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Graco Inc. 3500WB, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Graco Inc. 3500WB.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Graco Inc. 3500WB. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Graco Inc. 3500WB insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
