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Graco PRO 247936 Instructions Manual

Manual electrostatic waterborne air spray gun 100 psi (0.7 mpa, 7 bar) maximum air inlet pressure 100 psi (0.7 mpa, 7 bar) maximum working fluid pressure
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Instructions
Manual Electrostatic
PRO
Xs Waterborne
™
Air Spray Gun
For use with conductive spray materials (waterborne and other materials
less than 1 megohm-cm). For professional use ONLY.
For use in Class I, Div. I hazardous locations using Group D spray materials.
For use in Group II, Zone 1 areas using Group IIA spray materials.
II 2 G EEx 0.24 mJ
247936 Standard Model
247937 Smart Model
100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure
100 psi (0.7 MPa, 7 bar) Maximum Working Fluid Pressure
Important Safety Instructions:
Read all warnings and instructions in this manual.
Save these instructions.
See page 2 for Table of Contents.
U.S. Patent Pending
Standard Model
247936
312900C
Smart Model
247937
ENG

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Summary of Contents for Graco PRO 247936

  • Page 1 Instructions Manual Electrostatic Xs Waterborne ™ Air Spray Gun For use with conductive spray materials (waterborne and other materials less than 1 megohm-cm). For professional use ONLY. For use in Class I, Div. I hazardous locations using Group D spray materials. For use in Group II, Zone 1 areas using Group IIA spray materials.

  • Page 2: Table Of Contents

    Table of Contents Warnings ....... . . 3 Warning Symbol ......3 Notice .

  • Page 3: Warnings

    Warnings Warning Symbol WARNING This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama- tion point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk.
  • Page 4 Warnings EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system com- ponent.

  • Page 5: Overview

    Overview 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 volt- age current to the gun’s external charging probe.
  • Page 6 Overview Air swivel inlet. Left-hand thread. Fluid inlet. Turbine air exhaust. Air cap and nozzle. See page 13 for sizes. Fluid needle. Shuts off fluid flow and provides a ground point. ti1254a ti1254a ti1254a ti1255a ti1256a 312900C...
  • Page 7 Fluid adjustment valve. Adjusts fluid needle travel. Use only in low flow conditions, to reduce needle wear. Fan air adjustment valve. Adjusts fan size and shape. Atomizing air restrictor valve. Restricts atomizing air flow. Replace with plug (included) if desired. ES ON/OFF switch.
  • Page 8 Overview ES indicator (247936 only). Green when ES is ON (I). Voltage (247937 only). Shows voltage and current. Green/yellow=spray, red=see Electrical Troubleshooting, page 22. NOTE: Normal current draw for this model is higher and the yellow current bar will be lit. ES HI/LO switch (247937 only).

  • Page 9: Installation

    Installation Install the System 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 equipment unless you are trained and qualified. •...
  • Page 10 Installation c‡ ‡e Fig. 1. Typical Installation Main Air Supply Line b‡ Ventilation Fan Interlock Solenoid Valve c‡ Main Air Supply Shutoff Valve (bleed-type) Pump Air Line Filter/Water Separator e‡ Pump Air Supply Shutoff Valve (bleed-type) Air Line Lubricator Air Pressure Regulator Pump j‡...

  • Page 11: Connect The Air Line

    Connect the Air Line To reduce the risk of electric shock or other serious injury, the air supply hose must be electrically con- nected to a true earth ground. Use only Graco Grounded Air Supply Hose. 1. Connect the Graco Grounded Air Supply Hose (R) between the air supply line and the gun's air inlet (V) .

  • Page 12: Connect The Exhaust Tube

    Installation Connect the Exhaust Tube Press the exhaust tube (38) onto the barbed adapter on the bottom of the gun handle. Secure the tube with the clamp (39) (F . 5). Barbed adapter ti1275a Connect the Fluid Line 1. Before connecting the fluid line (N), blow it out with air and flush it with solvent.

  • Page 13: Select A Fluid Nozzle And Air Cap

    Select a Fluid Nozzle and Air The gun is supplied with Part No. 197266 Nozzle and 24A276 Air Cap. If you require a different size, refer to Table 1 and Table 2 , and instruction manual 309419, or consult with your Graco distributor. See Replace Air Cap/Nozzle on page 28.

  • Page 14: Grounding

    Installation Grounding Fire, Explosion, and Electric Shock Hazard When operating the electrostatic gun, any ungrounded objects in the spray area (people, containers, tools, etc.) can become electrically charged. Improper grounding can result in static sparking, which can cause a fire, explosion, or electric shock. Follow the grounding instructions below.

  • Page 15: Check Electrical Grounding

    Check Electrical Grounding Fire, Explosion, and Electric Shock Hazard Megohmmeter Part No. 241079 (AA-see F approved for use in a hazardous area. To reduce the risk of sparking, do not use the megohmmeter to check electrical grounding unless: • The gun has been removed from the hazardous area;...

  • Page 16: Check Fluid Viscosity

    Installation Check Fluid Viscosity To check fluid viscosity you will need: • a viscosity cup • a stopwatch. 1. Completely submerge the viscosity cup in the fluid. Lift the cup out quickly, starting the stopwatch as soon as the cup is completely removed. 2.
  • Page 17 7. Set gun air regulator to deliver minimum 40 psi (0.28 MPa, 2.8 bar) at gun when triggered, for maximum transfer efficiency. See table at right. Air Hose* Length Regulator Setting** ft (m) psi (MPa, bar) 15 (4.6) 50 (0.35, 3.5) 25 (7.6) 60 (0.42, 4.2) 50 (15.3)
  • Page 18 Installation Flush Fire, Explosion, and Electric Shock Hazard Read Fire and Explosion, and Electric Shock Hazards, page 3. Follow steps 1-6 below to flush the gun when using gun first time, changing colors, before fluid dries, at end of day, and before storing gun. NOTICE This gun has nylon components which will be dam- aged if you use methylene chloride as a flushing or...

  • Page 19: Pressure Relief

    Pressure Relief Pressurized Equipment Hazard The system pressure must be manually relieved to prevent the system from starting or spraying acciden- tally. To reduce the risk of an injury from electric shock, accidental spray from the gun, splashing fluid, or mov- ing parts, follow the Pressure Relief Procedure whenever you: •...

  • Page 20: Maintenance

    Maintenance Maintenance Clean Gun Daily 1. Flush, page 18. Clean outside of gun with non-conductive, compatible solvent. Point gun down. Use soft, damp cloth. Do not immerse gun. ti1292a 3. Remove air cap. 4. Clean air cap, retaining ring, and nozzle with soft brush and non-conductive, compatible solvent.
  • Page 21 Maintenance Daily System Care 1. Relieve pressure, page 19. 5. Check movement of trigger (T) and valves (V). Lubricate if necessary. ti1934 2. Clean fluid and air filters. ti12658 3. Check for fluid leaks. Tighten all fittings. ti1291a 4. Clean workpiece hangers. Use non-sparking tools. ti1300a 312900C...

  • Page 22: Electrical Troubleshooting

    Electrical Troubleshooting Electrical Troubleshooting 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 prop- erly. Do not install or repair this equipment unless you are trained and qualified.

  • Page 23: Electrical Tests

    Electrical Tests Electrical components inside the gun affect performance and safety. The following procedures test the condition of the power supply (18), barrel (16) and charging probe (31), and electrical continuity between components. Use megohmmeter Part No. 241079 (AA) and an applied voltage of 500 V.

  • Page 24: Test Power Supply Resistance

    Electrical Tests Test Power Supply Resistance 1. Remove the power supply (18), page 31. 2. Remove the turbine alternator (19) from the power supply, page 32. 3. Measure resistance from the power supply's ground strips (EE) to the conductive contact in the center of the power supply seal (FF).

  • Page 25: Spray Pattern Troubleshooting

    Spray Pattern Troubleshooting 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 prop- erly. Do not install or repair this equipment unless you are trained and qualified.

  • Page 26: Gun Operation Troubleshooting

    Gun Operation Troubleshooting Gun Operation Troubleshooting 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 prop- erly. Do not install or repair this equipment unless you are trained and qualified.

  • Page 27: Gun Repair

    Gun Repair Prepare the Gun for Repair Electric Shock Hazard Installing and repairing 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.

  • Page 28: Replace Air Cap/Nozzle

    Gun Repair Replace Air Cap/Nozzle NOTICE Hold the front end of the gun up and trigger the gun while removing the nozzle to help drain the gun and prevent any paint or solvent left in the gun from entering the air passages. 1.

  • Page 29: Remove Fluid Packing

    Remove Fluid Packing 1. Prepare the gun for repair, page 27. 2. Remove the air cap and fluid nozzle, page 28. 3. Remove the fluid needle, page 28. 4. Loosen the trigger screws (8) and trigger (30). See . 14. 5.

  • Page 30: Repair Packing Rod

    Gun Repair Repair Packing Rod You may replace the packing rod as individual parts or as an assembly. The assembly is pre-adjusted at the factory. Before installing the fluid packing rod into the gun barrel, make sure the internal surfaces of the barrel are clean.

  • Page 31: Remove Barrel

    Remove Barrel 1. Prepare the gun for repair, page 27. 2. Carefully loosen the nut (54) from the bracket fluid fitting (13). Pull the tube (14 or 50a) out of the fitting. Make sure both ferrules and the nut stay with the tube.

  • Page 32: Remove And Replace Power Supply

    Gun Repair Remove and Replace Power Supply • Inspect the gun handle power supply cavity for dirt or moisture. Clean with a clean, dry rag. • Do not expose gasket (10) to solvents. 1. Prepare gun for service, page 27. 2.

  • Page 33: Remove And Replace Turbine Alternator

    Remove and Replace Turbine Alternator Replace turbine alternator bearings after 2000 hours of operation. Order Part No. 223688 Bearing Kit. 1. Prepare gun for repair, page 27. 2. Remove the power supply/alternator assembly, page 32. 3. Disconnect the alternator from the power supply, page 32.

  • Page 34: Repair Fluid Adjustment Valve

    Gun Repair Repair Fluid Adjustment Valve 1. Prepare the gun for repair, page 27. 2. Remove the fluid adjustment valve (25). It can only be replaced as a complete assembly. See F 3. Screw the valve (25) into the gun handle. Torque to 15-25 in-lb (1.7-2.8 N•m).

  • Page 35: Remove And Replace Atomizing Air Restrictor Valve

    Remove and Replace Atomizing Air Restrictor Valve 1. Prepare the gun for repair, page 27. 2. Remove the atomizing air restrictor valve (23). Inspect the o-ring (23c*). Replace if necessary. See . 22. 3. Install a new atomizing air restrictor valve (23), or disassemble and replace parts individually.

  • Page 36: Parts

    Parts Parts Part No. 247936 60 kV Electrostatic Gun, Series A (Standard model) Maximum torque 10 in-lb (1.1 N•m) 27a* Ref. No. 37: Multi-tool See page 38 for detail views of the alternator (19), fan adjustment valve (20), ES ON/OFF valve (22), and packing rod (26). 32 55 24a* ti11932...
  • Page 37 Part No. 247937 60 kV Electrostatic Gun, Series A (Smart model) Maximum torque 10 in-lb (1.1 N•m) 27a* Ref. No. 37: Multi-tool 312900C See page 38 for detail views of the alternator (19), fan adjustment valve (20), ES ON/OFF valve (22), and packing rod (26). 24a* Parts ti12659...
  • Page 38 Parts Ref. No. 19: Alternator Ref. No. 22: ES ON/OFF Valve 22b* 22a* Ref. No. 37: Multi-tool Ref. No. 20: Fan Adjustment Valve 19a* TI1481a Ref. No. 26: Packing Rod 26d† 26c† 26h† ti12720 247936 (Standard Model) controls MAX FLUID WPR: 100 PSI (7bar, 0.7 Mpa) MAX AIR WPR: 100 PSI (7bar, 0.7 Mpa)
  • Page 39 Part No. 247936 60 kV Electrostatic Gun, Series A (Standard model) Part No. 247937 60 kV Electrostatic Gun, Series A (Smart model) Ref. Part No. Description 111157 FITTING, tube, fluid 197967 PLUG, handle 198058 SCREW, cap, socket head 185111 SPRING, compression 111450 PACKING, o-ring (247937 only) 188749...
  • Page 40 Parts Ref. Part No. Description 24A331 NEEDLE; includes 26a-26h 24A330 . NEEDLE, assembly 185495 . HOUSING, packing † 178763 . PACKING, needle † 178409 . PACKING, fluid † 186069 . SPACER, packing † 116905 . SEAL 197641 . NUT, packing †...

  • Page 41: Accessories

    Accessories Air Line Accessories ™ AirFlex Flexible Grounded Air Hose 100 psi (7 bar, 0.7 MPa) Maximum Working Pressure 0.315 in. (8 mm) ID; 1/4 npsm(f) x 1/4 npsm(f) left-hand thread 244963 6 ft (1.8 m) 244964 15 ft (4.6 m) 244965 25 ft (7.6 m) 244966...

  • Page 42: Gun Accessories

    Accessories Gun Accessories Gun Repair Kits 244781 Air Seal Repair Kit 244911 Fluid Seal Repair Kit Push/Pull Fan Air Valve 244912 For quick change of fan size. ES Always On Kit 244913 Replaces inlet fitting with ball valve to shut off air during flushing.

  • Page 43: Technical Data

    Technical Data Category Maximum Working Fluid Pressure... 100 psi (0.7 MPa, 7 bar) Maximum Working Air Pressure ... 100 psi (0.7 MPa, 7 bar) Maximum Fluid Operating Temperature ... 120°F (49°C) Maximum voltage output ... 60kV Sound Pressure (measured per ISO Standard 9216) ... at 40 psi (0.28 MPa, 2.8 bar); 90.4 dB(A) Sound Pressure (measured 1 m from gun) ...

  • Page 44: Graco Warranty

    Graco Warranty 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 to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months or two thousand hours of operation from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.

This manual is also suitable for:

Pro 247937Pro 312900cPro xs 247936Pro xs 247937Pro xs247936 ... Show all

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