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INSTRUCTIONS-PARTS LIST 308018
This manual contains important
Rev. W
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
Model PRO 3500hc
Electrostatic Air Spray Gun
65 kV, HIGH CONDUCTIVITY, MANUAL GUN
100 psi (7 bar, 0.7 MPa) Maximum Working Pressure
For use with electrically conductive, solvent based coatings, including metal flake paint
Part No. 222625, Series B
PRO 3500hc Electrostatic High Conductivity Air Spray Gun
Part No. 223451 Conversion Kit
To change the PRO 3500sc
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2 308018
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Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Prepare the Gun for Service . . . . . . . . . . . . . . . . . 24 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Air Cap/Nozzle/Resistor Stud Replacement . . . 24 Electrode Replacement . . . . . . . . . . . . . . . . . . . . . 25 Barrel Removal . . . . . . . . . . . . . .
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WARNING 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 manual. 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. S
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WARNING 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 Procedure on page 13 whenever you: are instructed to relieve the pressure; stop spraying; clean, check, or servicing the equipment; and install or clean the fluid nozzle
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Introduction How the Electrostatic Air Spray Gun Works The air hose supplies air to the spray gun. Part of the The pump supplies fluid to the hose and gun, where air operates the turbine and the rest of the air atomizes the fluid is electrostatically charged as it passes the the fluid being sprayed. The turbine generates power, electrode. The charged fluid is attracted to the which is converted by the power cartridge, to supply grounded workpiece, wrapping around and evenly high voltage current
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Converting a PRO 3500sc Gun to a PRO 3500hc Gun H G L A M D E B K J C F Fig. C Fig. A H G 12 L M 12a 12b 10 28 12 J 10 D E F Fig. B Fig. D 308018 7
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Installation AM ES ON-OFF Lever 1 is ON 0 is OFF N H E* S O B* C* D G J* V G X W F R P L K U* Q* WARNING SIGN T Non-hazardous Area Hazardous Area The air supply to the gun must be electrically interlocked with the ventilators to prevent the power supply from operating without ventilating fans on. KEY A Main Air Supply Line K Fluid Filter T Air Line Drain Valve B* Ventilation Fan Interlock Solenoid Valve L Fluid Supply Line Shutoff Valve U* Fluid Drain Valve C* Main Air Supply Shutoff Valve M Fl
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Installation NOTE: High velocity air exhaust will decrease the Installing the System operating efficiency of the electrostatic system. Air exhaust velocity of 100 ft/min (31 linear meters/minute) WARNING should be sufficient. FIRE, EXPLOSION, AND Connect the Air Line (Refer to Fig. 1) ELECTRIC SHOCK HAZARD Installing and servicing this equipment requires access to parts which may WARNING cause electric shock or other serious injury if work is not performed properly. ELECTRIC SHOCK HAZARD To red
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Installation The following are minimum grounding requirements for Connect the Exhaust Tube a basic electrostatic system. Your system may include Press the exhaust tube (provided) onto the barbed other equipment or objects which must be grounded. adapter on the bottom of the gun handle. Secure the Check your local electrical code for detailed grounding tube with the clamp provided. Refer to page 36. instructions. Your system must be connected to a true earth ground. Connect the Fluid Line (Refer
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Installation a. If using a black or grey air hose, use a me- Check the Electrical Grounding (See Fig. 2) gohmmeter (AA) to measure the resistance. Use an applied voltage of 500 minimum to 1000 volts maximum. The resistance should WARNING not exceed 2 megohms. FIRE, EXPLOSION, AND b. If using a red turbine air hose, use an ohmme- ELECTRIC SHOCK HAZARD ter to measure the resistance. Resistance Megohmmeter P/N 241079 (AA-see Fig. should not exceed 100 ohms. 2) is not approved for use in a hazard-
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Notes 12 308018
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Operation Pressure Relief Procedure Operating Checklist Check the following list daily, before starting to operate WARNING the system, to help ensure safe, efficient operation. PRESSURIZED EQUIPMENT HAZARD ____ 1. All the operators are properly trained to The system pressure must be manually relieved to safely operate an electrostatic air spray prevent the system from starting or spraying acci- system as instructed in this manual. dentally. To reduce the risk of an injury from electric shock, ac
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Operation DD 26 45 43 31 1 20 Fig. 4 Selecting a Fluid Nozzle and Air Cap Operating the Spray Gun WARNING WARNING PRESSURIZED EQUIPMENT HAZARD PRESSURIZED EQUIPMENT HAZARD To reduce the risk of an injury, follow the Pressure To reduce the risk of an injury, follow the Pressure Relief Procedure on page 13 whenever you stop Relief Procedure on page 13 before removing or spraying and whenever you are instructed to installing a fluid nozzle and/or air cap. relieve pressure. The gun is s
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Operation 7. Set the atomizing air valve (31) about 1.5 turns out Operating the Spray Gun (continued) for most applications. The Atomizing Air Valve 1. Follow the Operating Checklist on page 13. Adjustment chart shows the effect of the atomiz- ing air valve adjustment on the air cap air flow. 2. To adjust the air cap for a vertical or horizontal spray pattern, first make sure the pressure is 8. Adjust the pattern width with the fan air valve (43). relieved. Then loosen the air cap retaining nut,
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Operation 1. Relieve the pressure. Shutdown 2. Flush and clean the equipment. Follow the instruc- WARNING tion in Maintenance. PRESSURIZED EQUIPMENT HAZARD To reduce the risk of an injury, follow the Pressure Relief Procedure on page 13 whenever you stop spraying and whenever you are instructed to relieve pressure. Maintenance Daily Care and Cleaning CAUTION WARNING To avoid contaminating the fluid to be sprayed, make sure that any solvent that is inside the shroud is PRESSURIZED EQUIPMENT HAZAR
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Maintenance Clean the Air Cap and Fluid Nozzle WARNING PRESSURIZED EQUIPMENT HAZARD CAUTION To reduce the risk of an injury, follow the Pressure Relief Procedure on page 13 whenever you stop Do not use metal tools to clean the air cap or spray tip holes as this could scratch them, and make sure spraying and whenever you are instructed to the electrode wire is not damaged. Scratches in the relieve the pressure. air cap or spray tip or a damaged electrode wire can distort the spray pattern. 1. Rel
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Troubleshooting WARNING WARNING ELECTRIC SHOCK HAZARD PRESSURIZED EQUIPMENT HAZARD Installing and servicing this equipment To reduce the risk of an injury, follow the Pressure requires access to parts which may Relief Procedure on page 13 before checking or cause an electric shock or other serious servicing any part of the system and whenever you injury if the work is not performed properly. Do not are instructed to relieve the pressure. install or service this equipment unless you are trained a
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Troubleshooting Gun Operation Troubleshooting Problem Cause Solution The needle packings or shaft are worn. Replace the packings or shaft; see page Fluid leakage from the fluid packing 28. area The packing nut is loose Tighten the packing nut; see page 28. Air leakage from the front of the gun The air valve is not seating properly. Clean and service the air valve; see page 31. The air valve o-ring is sticking. Lubricate the o-ring; see page 31. Fluid leakage from the front of the gun The needle
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Troubleshooting Electrical Troubleshooting Problem Cause Solution Poor wrap-around The ES ON-OFF lever is in the OFF (O) Turn the lever to ON (1). position.* The distance between the gun and work- Adjust the spraying distance to 8 to 12 inches piece is incorrect. (203 to 305 mm) The parts are poorly grounded. Clean the workpiece hangers. Check for proper grounding on the conveyer or track. The booth exhaust velocity is too high. Reduce exhaust velocity within code limits. The atomizing air press
