Graco PRO 247936 Instructions Manual Download Page 1

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Instructions

Manual Electrostatic

PRO

™

Xs Waterborne

Air Spray Gun

Smart Model
247937

Standard Model
247936

312900C

ENG

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.

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

U.S. Patent Pending

Important Safety Instructions:

Read all warnings and instructions in this manual.
Save these instructions.

See page 2 for Table of Contents.

II 2 G EEx 0.24 mJ

Summary of Contents for PRO 247936

Page 1: ... 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 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 U S Patent Pending Important Safety Instructions Read all warnings and instructions in this manual Save these instructions S...

Page 2: ...Resistance 23 Test Gun Resistance 23 Test Charging Probe Resistance 23 Test Power Supply Resistance 24 Test Barrel Resistance 24 Spray Pattern Troubleshooting 25 Gun Operation Troubleshooting 26 Gun Repair 27 Prepare the Gun for Repair 27 Replace Air Cap Nozzle 28 Replace Fluid Needle 28 Remove Fluid Packing 29 Repair Packing Rod 30 Remove Barrel 31 Install Barrel 31 Remove and Replace Power Suppl...

Page 3: ...n unless ventilating fans are on Use cleaning solvents with highest possible flash point when flushing or cleaning equipment Always turn the electrostatics off when flushing cleaning or servicing equipment If there is static sparking or you feel a shock stop operation immediately Do not use equipment until you identify and correct the problem Eliminate all ignition sources such as pilot lights cig...

Page 4: ...er or modify equipment Use equipment only for its intended purpose Call your distributor for information Route hoses and cables away from traffic areas sharp edges moving parts and hot surfaces Do not kink or over bend hoses or use hoses to pull equipment Keep children and animals away from work area Comply with all applicable safety regulations TOXIC FLUID OR FUMES HAZARD Toxic fluids or fumes ca...

Page 5: ... grounded at all times and therefore eliminate the need for an isolation sys tem MAX FLUID WPR 100 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO ES I O ES MAX AIR WPR 100 PSI 7bar 0 7 Mpa MAX FLUID WPR 100 PSI 7bar 0 7 Mpa MAX AIR WPR 100 PSI 7bar 0 7 Mpa To avoid shock or explosion Use properly grounded air hose Read instruction manual I O ES KEY A Air swivel inlet page 6 B Fluid inlet page 6 C Turbine air ...

Page 6: ...r swivel inlet Left hand thread B Fluid inlet C Turbine air exhaust D Air cap and nozzle See page 13 for sizes E Fluid needle Shuts off fluid flow and provides a ground point ti1254a A ti1254a B ti1254a C ti1255a D ti1256a E ...

Page 7: ...s atomizing air flow Replace with plug included if desired I ES ON OFF switch Turns electrostatics ON I or OFF 0 MAX FLUID WPR 100 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO ES I O ES MAX AIR WPR 100 PSI 7bar 0 7 Mpa F MAX FLUID WPR 100 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO ES I O ES MAX AIR WPR 100 PSI 7bar 0 7 Mpa G ti1257a I O ES H MAX FLUID WPR 100 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO ES I O ES MAX AIR WPR...

Page 8: ...ustment 247937 only Remove plug to adjust to 4 settings MAX FLUID WPR 100 PSI 7bar 0 7 Mpa MAX AIR WPR 100 PSI 7bar 0 7 Mpa To avoid shock or explosion Use properly grounded air hose Read instruction manual I O ES J ti12581 MAX FLUID WPR 100 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO ES I O ES MAX AIR WPR 100 PSI 7bar 0 7 Mpa K Voltage Current ti12582 MAX FLUID WPR 100 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO E...

Page 9: ...r exhaust will decrease the operating effi ciency of the electrostatic system Air exhaust velocity of 100 ft min 31 linear meters minute should be sufficient 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 Be sure yo...

Page 10: ...f Air Line Lubricator g Air Pressure Regulator h Pump j Pump Ground Wire k Fluid Filter l Fluid Supply Line Shutoff Valve m Fluid Pressure Regulator n Fluid Supply Line o Gun Air Line Filter Water Separator p Gun Air Supply Line Shutoff Valve bleed type q Air Hose Ground Wire r Graco Grounded Air Hose s Electrostatic Air Spray Gun t Air Line Drain Valve u Fluid Drain Valve v Gun Air Inlet w Gun Fl...

Page 11: ...ply line to shut off air to the gun s Connect the Charging Probe 1 Apply dielectric grease to probe socket 2 Press electrode on in Connect Disconnect position shown in FIG 4 3 Rotate electrode to spray position FIG 4 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 FIG 2 T...

Page 12: ...pump outlet 4 Connect the fluid line to the 3 8 npsm gun fluid inlet W FIG 6 5 Before running any paint through the spray gun flush it with a compatible solvent Filter the Fluid Install a fluid filter K to remove particles and sediment that could clog the spray nozzle FIG 5 The fluid drain valve U is required in your system to assist in relieving fluid pressure in the displacement pump hose and gu...

Page 13: ...ury follow the Pressure Relief procedure on page 19 before removing or installing a fluid nozzle and or air cap Table 1 Fluid Nozzles Part No Orifice Size 197265 1 2 mm 047 in 197266 1 5 mm 055 in 197267 1 8 mm 070 in 249922 1 2 mm 047 in 249923 1 5 mm 055 in 249924 1 8 mm 070 in Table 2 Air Caps Part No Pattern Shape and Length in mm Recommended Fluids and Production Rates 24A438 Round end 15 17 ...

Page 14: ...wear shoes with non conductive soles such as rubber or plastic If gloves are necessary wear the conductive gloves that are supplied with the gun If non Graco gloves are worn cut off fingers or palm area of gloves to ensure your hand contacts the grounded gun han dle Object being sprayed keep the workpiece hangers clean and grounded at all times Resistance must not exceed 1 megohm The floor of the ...

Page 15: ...static air spray system Follow the instructions included with the meter and probe If the material is above 1 megohm cm then a Pro Xs3 HC gun may be a better option The Pro Xs WB gun is intended to spray very conductive waterborne materi als and other materials less than 1 megohm cm Fire Explosion and Electric Shock Hazard Megohmmeter Part No 241079 AA see FIG 7 is not approved for use in a hazardo...

Page 16: ...osition air cap 2 Fully open fan air adjustment valve 3 Fully open fluid adjustment valve 4 Fully open atomizing air restrictor valve 5 Check that ES ON OFF switch is OFF O 6 Start pump Adjust fluid regulator until stream from gun travels 8 12 in 200 300 mm before falling off Typically if fluid pressure is below 5 psi 04 MPa 0 4 bar or above 20 psi 0 14 MPa 1 4 bar a change of nozzle size is recom...

Page 17: ...clockwise for wider pattern 10 Turn ES ON OFF switch ON I 11 Check that ES indicator or display is lit If not see Electrical Troubleshooting page 22 12 Spray test piece Examine edges for coverage If wrap is poor see Spray Pattern Troubleshooting page 25 TI1281A Air Hose Length ft m Regulator Setting psi MPa bar 15 4 6 50 0 35 3 5 25 7 6 60 0 42 4 2 50 15 3 75 0 52 5 2 5 16 in 8 mm diameter 8 mm 5 ...

Page 18: ...e pressure page 19 6 Hang gun from hook Nozzle must point down 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 flush...

Page 19: ...the hose end coupling Now clear the nozzle or hose Shutdown Follow these steps at end of workshift and before clean ing checking or repairing equipment 1 Flush page 18 2 Hang gun from hook Nozzle must point down 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...

Page 20: ... c Do not immerse gun 3 Remove air cap 4 Clean air cap retaining ring and nozzle with soft brush and non conductive compatible solvent 5 Clean probe with soft brush and compatible solvent 6 Use toothpick or other soft tool to clean air cap holes Do not use metal tools 7 Reinstall air cap Tighten securely ti1292a ti1293a ti1294a ti1295a ti1296 ti1297a ti12716 ti1299a ...

Page 21: ...lieve pressure page 19 2 Clean fluid and air filters 3 Check for fluid leaks Tighten all fittings 4 Clean workpiece hangers Use non sparking tools 5 Check movement of trigger T and valves V Lubricate if necessary ti1934 ti1291a ti1300a T V ti12658 ...

Page 22: ...rrect distance from gun to part Should be 8 12 in 200 300 mm Poorly grounded parts Resistance must be 1 megohm or less Clean workpiece hangers Faulty gun resistance See Test Total Gun Resistance on page 23 Faulty turbine alternator Be sure the plug is in place on the back of the power supply housing Remove and test the turbine alterna tor See page 33 The KV HI LO lever is on LO Check the lever act...

Page 23: ...st Charging Probe Resistance Measure resistance between the metal spring in the charging probe DD and the charging probe tip BB see FIG 9 it should be 15 30 megohms If outside this range replace the charging probe If in range inspect the spring and barrel socket for possible causes of poor continuity Reassemble the charging probe and retest the gun resistance Fire Explosion and Electric Shock Haza...

Page 24: ...Resistance Test Barrel Resistance 1 Insert a conductive rod GG into the gun barrel removed for the power supply test and against the metal contact HH in the front of the barrel 2 Measure the resistance between the conductive rod GG and the charging probe socket CC See FIG 12 The resistance should be 15 30 megohms 3 If the resistance is outside the range replace barrel 4 If resistance is in range r...

Page 25: ... To reduce the risk of an injury follow the Pressure Relief procedure on page 19 whenever you are instructed to relieve the pressure Problem Cause Solution Fluttering or spitting spray No fluid Refill supply Loose dirty damaged nozzle seat Clean or replace nozzle page 28 Air in fluid supply Check fluid source Refill Improper spray pattern Damaged nozzle or air cap Replace page 28 Fluid buildup on ...

Page 26: ...el finish Atomizing air pressure too low Open atomizing air valve more or increase gun air inlet pressure use lowest air pressure necessary Poorly mixed or filtered fluid Remix or refilter fluid Fluid too thick Reduce viscosity Fluid leaks from the fluid packing area Worn packings or rod Replace packings or rod see page 30 Air leaks from the front of the gun Air valve 21 is not seating properly Cl...

Page 27: ...tely Kit parts are marked with an asterisk for example 6 Fluid Seal Repair Kit 244911 is available The kit must be purchased separately Kit parts are marked with a double asterisk for example 5 1 Flush the gun page 18 2 Relieve the pressure page 19 3 Disconnect the gun air and fluid lines 4 Remove the gun from the worksite Repair area must be clean Electric Shock Hazard Installing and repairing th...

Page 28: ...acing forward Replace Fluid Needle 1 Prepare the gun for repair page 27 2 Remove the air cap and nozzle page 28 3 Unscrew the fluid needle 29 Hold the packing rod end 26 to prevent it from turning FIG 13 4 Apply low strength purple Loctite or equivalent thread sealant to the fluid needle and packing rod threads Install the fluid needle finger tight Do not overtighten 5 Install the fluid nozzle and...

Page 29: ...gger screws 8 and trigger 30 See FIG 14 5 Remove the packing rod 26 using the multi tool 37 6 Check all parts for wear or damage and replace if necessary Fig 14 Remove Fluid Packing NOTICE Clean all parts in non conductive solvent compati ble with the fluid being used such as xylol or min eral spirits Use of conductive solvents can cause the gun to malfunction TI1549A 37 30 8 ...

Page 30: ...er on the fluid rod 26a in the direction shown Generously apply dielectric grease to the outside of the spacer 3 Place the rod packing 26d packing spreader 26c and housing 26b on the packing rod 26h 4 Lightly tighten the packing nut 26g The packing nut is properly tightened when there is 3 lb 13 3 N of drag force when sliding the packing housing 26b assembly along the rod Tighten or loosen the pac...

Page 31: ... air holes are aligned properly Replace if damaged See FIG 17 2 Place the barrel 16 over the power supply 18 and onto the gun handle 17 3 Tighten the three screws 11 oppositely and evenly about a half turn past snug 4 Assemble the fluid tube 14 into the bracket fitting 13 Ensure that the ferrules are in place Tighten the nut 54 5 Test gun resistance page 23 Fig 17 Install Barrel NOTICE To avoid da...

Page 32: ...y 5 Check the power supply resistance page 24 Replace if necessary 6 On Smart Model only connect the 6 pin flexible cir cuit 59 to the power supply 7 Connect the 3 wire connector GG Slide the alter nator 19 down onto the power supply 18 8 Lubricate the alternator o ring 19a with non sili cone grease Part No 111265 Do not over lubri cate Ensure the alternator pads 19e are in place 9 Lubricate the p...

Page 33: ... the valve assembly 20 and unscrew it from the handle 17 You may replace the valve as an assembly go to step 9 or as individual parts steps 3 9 3 Remove the retaining ring 20a See FIG 19 4 Turn the valve stem 20d counterclockwise until it comes free from the valve housing 20c 5 Remove the o ring 20b 6 Clean all parts and inspect for wear or damage Use non silicone grease Part No 111265 Do not over...

Page 34: ...ct the rubber sealing surface and replace the air valve if damaged 5 Inspect the u cup 6 Do not remove the u cup unless damaged If removed install the new one with its lips facing into the gun handle 17 6 Install the air valve 21 and spring 15 into the gun handle 17 7 Install the fluid adjustment valve 25 Torque to 15 25 in lb 1 7 2 8 N m 8 Install the barrel page 31 Fig 21 Air Valve NOTICE Clean ...

Page 35: ...3a to 15 20 in lb 1 7 2 3 N m Fig 22 Atomizing Air Restrictor Valve Repair ES ON OFF Valve 1 Prepare the gun for repair page 27 2 Loosen the screw 48 Remove the valve 3 Lubricate the o rings 22a and 22b with non sili cone grease Part No 111265 Do not over lubri cate 4 Clean and inspect parts for damage Replace if nec essary The protrusion on the retainer plate 22d must point upward 5 Reinstall the...

Page 36: ...e page 38 for detail views of the alternator 19 fan adjustment valve 20 ES ON OFF valve 22 and packing rod 26 27 30 10 1 60 31 26 29 7 9 27a 7a 7b 11 18 18a 8 20 25 15 21 24 14 19 6 23 35 13 16 ti11932 4 54 24a 32 55 53 3 22 Ref No 37 Multi tool 8 17 2 Maximum torque 10 in lb 1 1 N m 1 1 1 ...

Page 37: ...r detail views of the alternator 19 fan adjustment valve 20 ES ON OFF valve 22 and packing rod 26 27 30 10 1 60 31 26 29 7 9 27a 7a 7b 11 18 18a 8 22 20 25 15 21 24 14 19 6 23 35 13 16 ti12659 4 54 24a 32 55 59 53 2 3 5 58 56 57 Ref No 37 Multi tool 8 17 Maximum torque 10 in lb 1 1 N m 1 1 1 ...

Page 38: ...00 PSI 7bar 0 7 Mpa 100 KV Ma 0 HI LO ES I O ES MAX AIR WPR 100 PSI 7bar 0 7 Mpa Ref No 26 Packing Rod 26h 26f 26c 26d 26g 26b 26e 26a TI1487A TI1481a 22a 22b 22c 22d 22e 22f 22g 20a 20b 20c 20d 19a 19b 19b 19c Ref No 20 Fan Adjustment Valve Ref No 19 Alternator 19d 19e Ref No 22 ES ON OFF Valve Ref No 37 Multi tool 247937 Smart Model controls 247936 Standard Model controls ti12719 ti12720 ...

Page 39: ...6 1 18 24A332 POWER SUPPLY 60 kV 1 18a 256267 SEAL 1 19 244555 TURBINE alternator includes 19a 19e 1 19a 110073 O RING fluoroelastomer 1 19b 223688 BEARING KIT includes front and rear bearings and fan 1 19c 244577 COIL 1 19d 111745 RING retaining 1 19e 198821 PAD pressure 2 20 244556 VALVE adjustment fan includes 20a 20d 1 20a 101021 RING retaining 1 20b 106560 O RING fluorocarbon 1 20c 197566 HOU...

Page 40: ...2 32 111285 FERRULE back 1 35 244834 SWIVEL air 1 4 npsm m left hand threads 1 36 107460 WRENCH ball end 4 mm 1 37 276741 MULTI TOOL 1 38 185103 TUBE exhaust not shown 1 39 110231 CLAMP not shown 1 40 116553 GREASE dielectric tube not shown 1 41 197979 COVER gun box of 10 not shown 1 Ref No Part No Description Qty 42 179791 TAG warning not shown replace ment available at no cost 1 43 180060 SIGN w...

Page 41: ...he pump air motor when closed 107141 3 4 npt Air Line Shutoff Valve 150 psi 10 bar 1 0 MPa Maximum Working Pressure For turning air to gun on or off 224754 1 4 npsm m x 1 4 npsm f left hand thread Air Line Quick Disconnect 112534 Swiveling quick disconnect replaces stan dard air inlet swivel Air Hose Adapter Nipple 185493 Use to connect multiple air hoses 1 4 npt x 1 4 npsm left hand thread Non Sw...

Page 42: ... 113 g tube of sanitary non silicone lubricant for fluid seals and wear areas Alternator Bearing Kit 223688 To repair the turbine alternator Cleaning Brush 105749 For cleaning air cap and fluid nozzle Miscellaneous Accessories Ground Wire and Clamp 222011 For grounding pump and other components and equipment in the spray area 12 gauge 25 ft 7 6 m Megohmmeter 241079 500 Volt output 0 01 2000 megohm...

Page 43: ...0 28 MPa 2 8 bar 90 4 dB A at 100 psi 0 7 MPa 7 bar 105 4 dB A Sound Pressure measured 1 m from gun at 40 psi 0 28 MPa 2 8 bar 87 dB A at 100 psi 0 7 MPa 7 bar 199 dB A Air inlet fitting left hand thread 1 4 npsm Fluid inlet fitting 3 8 18 npsm R 3 8 19 compound thread Gun Weight 247936 22 4 oz 634 g 247937 25 1 oz 712 g Gun Length with probe 10 6 in 24 6 cm Paint Resistivity 1 megohm cm Wetted Pa...

Page 44: ...haser transportation prepaid If inspection of the equipment does not disclose any defect in material or workmanship repairs will be made at a reasonable charge which charges may include the costs of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A...

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