Graco Inc. 311911C Paint Sprayer User Manual
Contents
1. Motor thermal switch Yellow motor leads must have continuity through thermal switch Brush cap missing or loose brush lead connections Brush length which must be 1 4 in 6mm minimum NOTE Brushes do not wear at the same rate on both sides of motor Check both brushes Motor armature commutator for burn spots gouges and extreme rough ness Motor armature for shorts using armature tester growler or perform spin test page 16 Pressure control not plugged in to control board Troubleshooting What To Do When check is not OK refer to this column Reset building circuit breaker replace building fuses Try another outlet Replace extension cord Use shorter extension cord Replace power supply cord See page 21 Power Cord Replacement Replace fuse after completing motor inspection See page 23 Fuse Replacement Replace loose terminals crimp to leads Be sure ter minals are firmly connected Clean circuit board terminals Securely reconnect leads Replace motor See page 34 Motor Replacement Install brush cap or replace brushes if leads are dam aged See page 18 Motor Brush Replacement Replace brushes See page 18 Motor Brush Replacement Remove motor and have motor shop resurface com mutator if possible See page 34 Motor Replace ment Replace motor See page 34 Motor Replacement Insert pressure control connector into control board Troubleshooting What To2. Sprayer model number displays for a few seconds and then data point 1 displays 5 Push display button and next data point displays 311911C Pressure Control Replacement FinishPro 390 6 Turn sprayer OFF and then ON to leave in stored data mode 1 4 Number of hours power switch has been power switch has been ON with power applied 2 Number of hours motor has been Number of hours motor has been running A error code Press and hold san button to clear error code to E 00 _ Software revision 31 Drain Valve Replacement Drain Valve Replacement Removal 1 Relieve pressure page 7 Disconnect power cord from outlet 2 Using a punch and hammer tap pin 26 out of drain handle 25 3 Pull drain handle 25 and base 24 off drain valve 23 4 Using a wrench loosen drain valve 23 and remove it from manifold 15 32 Installation Before installing new drain valve be sure old gas ket 23a and seat 23b are not still inside mani fold Thread drain valve 23 into manifold 15 opening 2 Handtighten securely Using a wrench torque to 120 to 130 in lb 3 Push base 24 over drain valve 23 and then drain handle 25 over base 24 4 Replace pin 26 in drain handle 25 If necessary use a hammer to tap it in place completely 23b ti8384a 311911C Drain Line Removal Replacement Drain Line Removal Replacement FinishPro 390 Removal To r
3. asa n n oe e E a das pate I Asia Australia 255116 255117 Repair N GRACO FinishPro 390 395 Airless Air Assisted Sprayer 311911C For the application of architectural paints and coatings Maximum Fluid Working Pressure 3300 psi 227 bar 22 7 MPa Maximum Air Working Pressure 35 psi 2 4 bar 0 24 MPa IMPORTANT SAFETY INSTRUCTIONS e Read all warnings and instructions Save these instructions Contact Graco Customer Ser vice your local Graco distributor or our website www graco com to obtain a manual in your lan guage Models FinishPro 390 FinishPro 395 Europe CEE 7 7 255110 255111 FinishPro 395 UK 255114 255115 Related Manuals 309250 311937 312100 ti9019a PROVEN QUALITY LEADING TECHNOLOGY Graco Inc P O Box 1441 Minneapolis MN 55440 1441 O ED C PE Copyright 2007 Graco Inc is registered to l S EN ISO 9001 sona Warning Warning The following warnings are for the setup use grounding maintenance and repair of this eduipment The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure specific risks Refer back to these warnings Additional product specific warnings may be found throughout the body of this manual where appli cable Ah WARNING FIRE AND EXPLOSION HAZARD Flammable fumes such as solvent and paint fumes in work area can ignite or explode To help prevent fire and explosi
4. page 13 3 Disconnect power cord from outlet 2 Pushdrive housing into front endbell housing Insert gear crank 3 through hole in connecting rod 7 4 Remove two screws 30 and cover 32 5 Remove four screws 6 6 Pull drive housing 5 out of motor front endbell 7 Remove gear cluster 2 and 3 and thrust bearing 4 from drive housing 3 Install four screws 6 CAUTION Do not drop gear cluster 3 and 2 when removing 5 Install pump 9 Displacement Pump Replace drive housing 5 Gear cluster may stay engaged in ment page 13 motor front endbell or drive housing 4 Install cover 32 with two screws 30 311911C 15 Spin Test Spin Test See Wiring Diagram page 36 Armature Brushes and Motor Wiring Open Circuit Test Continuity 1 Connect red and black motor leads with test lead Turn motor fan by hand at about two revolutions per second To check armature motor winding and brush electrical 2 If uneven or no resistance check for missing brush continuity caps broken brush springs brush leads and worn brushes Repair as needed page 18 1 Relieve pressure page 7 Disconnect power cord from outlet 3 If still uneven or no resistance replace motor page 34 2 Remove two screws 30 and shroud 29 4 Reattach motor connector F 3 Remove drive housing 5 page 15 l 5 Replace drive housing page 15 4 Disconnect motor connector F 6 Repla
5. zen in sprayer Place sprayer in warm area to thaw Do not start sprayer until thawed completely If paint hardened dried in sprayer replace pump packings See page 13 Displacement Pump Replacement Displacement pump connecting rod Push pin into place and secure with spring retainer pin Pin must be completely pushed See page 13 Displacement Pump Replacement into connecting rod and retaining spring must be firmly in groove or pump pin Motor Remove drive housing Replace motor if fan won t turn See page 34 Motor assembly See page 15 Drive Hous Replacement ing Replacement Try to rotate fan by hand Basic Air Pressure Power function selector Ensure selection is AA 2 Spray air pressure regulator may be Pull air regulator to unlock and turn clockwise to closed FinishPro 395 Air valve at gun may be closed Turn air regulator counter clockwise to open 8 311911C Problem Basic Electrical See wiring diagram page 36 311911C What To Check If check is OK go to next check Electric supply Meter must read 105 130 Vac for 110 120 Vac models and 210 255 Vac for 230 Vac mod els Extension cord Check extension cord continuity with volt meter Sprayer power supply cord Inspect for damage such as broken insula tion or wires Fuse FinishPro 390 Check replaceable fuse on control board next to ON OFF switch Motor leads are securely fastened and properly connected to control board
6. 16 3 Disconnect pressure switch connector A from con ti5766c trol board 33 If you plan to reuse the pressure control assembly be very careful not to damage or tangle the wires 4 Remove tape 22 holding wires to manifold i while unscrewing the assembly 5 Pull wires back through hole K in housing 8 Remove pressure control assembly Installation Inspect pressure control assembly before installa tion to verify the o ring is installed and in place 1 Align grommet collar 17 on fluid manifold so open ing faces toward motor 2 Apply Loctite to pressure control assembly threads 16 3 Screw pressure control assembly 16 into manifold and torque to 150 in lb 17 0 N m ti5768e Be careful when tightening pressure control knob 6 Turn the pressure control knob 16 counter clock that wires do not get pinched between the pressure wise as far as you can to access the flats on either control assembly and fluid manifold side of the pressure control assembly 4 Wrap wires around knob and feed through slot in 7 Using a 1 in 26 mm wrench loosen and unscrew grommet 21 pressure control assembly l 5 Insert grommet 21 in hole K in housing Secure wires to manifold housing with tape 22 6 Reconnect pressure switch connector A to control board 33 7 Install shroud 29 and two screws 30 see illustra tion page 15 28 311911C Pressure Con
7. 37 Wiring Diagram Notes 38 311911C Power reguirements Max tip size Max material output gpm lpm Maximum material pres sure Airless Maximum material pres sure AA Atomizing air output Air pressure Pump motor Compressor motor Material hose Air hose Gun Wetted parts Length Width Height Weight bare 311911C Technical Data FinishPro 390 Models 0 020 43 gpm 1 6 lpm 2600 psi 180 bar 2600 psi 180 bar 3 2 cfm 35 psi 2 4 bar 5 8 HP DC 1 0 HP AC Induction 3 16 in x 50 ft blue 3 8 in x 50 ft clear G40 w RAC X tip 120 Vac 50 60 Hz 15A 230 Vac 50 60 Hz 10A 0 021 47 gpm 1 8 lpm 2600 psi 180 bar 2600 psi 180 bar 2 9 cfm 35 psi 2 4 bar 5 8 HP DC 1 0 HP AC Induction 3 16 in x 50 ft blue 3 8 in x 50 ft clear G40 w RAC X tip Technical Data FinishPro 395 Models 0 021 47 gpm 1 8 lpm 3300 psi 228 bar 2800 psi 193 bar 3 2 cfm 35 psi 2 4 bar TEFC 7 8 HP DC 1 0 HP AC Induction 3 16 in x 50 ft blue 3 8 in x 50 ft clear G40 w RAC X tip 120 Vac 50 60 Hz 15A 230 Vac 50 60 Hz 10A 0 023 54 gpm 2 0 Ipm 2600 psi 180 bar 2600 psi 180 bar 2 9 cfm 35 psi 2 4 bar TEFC 7 8 HP DC 1 0 HP AC Induction 3 16 in x 50 ft blue 3 8 in x 50 ft clear G40 w RAC X tip zinc plated carbon steel nylon stainless stee
8. 390 Digital Display Messages FinishPro 395 e No display does not mean the sprayer is not pressurized Relieve pressure before repair Display Sprayer Operation What To Do No Display Sprayer stops Power is not applied Sprayer Loss of power Check power source Relieve may be pressurized pressure before repair or disas sembly 3000 psi Sprayer is pressurized Power is applied Normal operation 210 bar Pressure varies with tip size and pressure 21 MPa control setting Sprayer may continue to run Power is Pressure greater than Replace pressure control board applied 4500p psi 310 bar 31 or pressure transducer mpa or a pressure trans ducer is faulty Sprayer stops Power is applied Pressure transducer Check transducer connection faulty bad connection or Open drain valve Substitute broken wire new transducer for transducer in sprayer If sprayer runs replace transducer Sprayer does not start or stops Power is Motor fault Check for locked rotor shorted applied wiring or disconnected motor Repair or replace failed parts Power is applied Pressure is less than 200 Increase pressure if desired psi 14 bar 1 4 MPa Drain valve may be open Sprayer stops Power is applied Empty paint pail Loss of Refill paint pail Check for leaks pressure or clogged pump inlet Repeat Startup procedure Pressure Control Transducer 6 Remove pressure control transducer and packing FinishPro 395 o ring f
9. motor 54 on frame 59 with screws 47 2 Install manifold 15 with screws 47 3 Install control housing 48 with screws 47 4 Install board 49 with screws 6 Connect all leads to board See wiring diagram for your sprayer model on page 36 5 Install drive housing 42 Drive Housing Replace ment page 15 6 Install pump 41 Displacement Pump Replace ment page 13 ti9605a 35 Wiring Diagram Wiring Diagram FinishPro 395 120 Vac Black ON OFF Blue Black Yellow le Switch Potentiometer SI N Green Yellow o lo a To e I To Power Plug a na 5 Black J E Transducer UL White Eni Red Black White From Motor 2X White FinishPro 390 Digital Display 120 Vac From Motor ES Black Replaceable Fuse F y O Pressure i Control Assembly Capacitor _ QuE A ma iii Y O ti9722a 311911C Wiring Diagram FinishPro 390 240 Vac Pressure Control From Motor Red Assembly Capacitor 2X Yellow he ON OFF SAR Switch sy To Compressor 311911C
10. pressure page 7 Disconnect power cord from outlet 2 Remove two screws 30 and shroud 29 see illus tration on page 16 3 Disconnect motor connector D from control board 33 4 Cuttie wrap F 5 Locate two yellow wires C thermal leads Cut each yellow wire at the center 6 Using a flat screwdriver pry off two brush caps A Remove brushes B from motor 7 Discardold brush harness 8 While rotating fan by hand using compressed air blow air into positive top brush holder to remove brush dust To contain the dust turn on your shop Vac Place the end of the hose over the negative lower brush holder while blowing compressed air into the posi tive top brush holder Installation Use all new parts included in your brush kit Do not reuse old parts if new replacement parts are pro vided 1 With wires facing toward front of motor install new brushes B in motor Be sure to install the positive red brush lead in the top of the motor as shown and the negative black brush lead in the side of the motor 18 2 Push each cap A into place over brush Orient each cap with the 2 projections on either side of the brush lead You will hear a snap when cap is securely in place 3 Using a wire stripper strip off wire insulation approx imately 1 4 inch 6 mm from the end of each yellow wire C to the motor 4 Insert stripped end into end of a butt splice E on new brush a
11. to avoid damaging parts ti7388a 1 Install new brush G with lead into brush holder D 2 Slide brush lead E onto terminal F 3 Install spring clip B Push down to set hook C into brush holder D 4 Repeat for other side 5 Test brushes a Remove pump Displacement Pump Replace ment page 13 b With sprayer OFF turn pressure control knob fully counter clockwise to minimum pressure Plug in sprayer c Turn sprayer ON Slowly increase pressure until motor is at full speed CAUTION Do not run sprayer dry for more than 30 seconds while checking brushes to avoid damaging displace ment pump packings 6 Install brush inspection covers A and gaskets 7 Break in brushes a Operate sprayer 1 hour with no load b Install pump Displacement Pump Replace ment page 13 19 Control Board Replacement Control Board Replacement See Wiring Diagram page 36 6 Pull control board out slightly and then slide it back and off of frame N Malo sure power cord is free and not wrapped around cord wrap FinishPro 390 Removal 7 Remove grommet and wires from strain relief 1 Relieve pressure page 7 Disconnect power cord Ground wire will remain attached to sprayer with from outlet grounding screw 2 Remove two screws 30 and shroud 29 see illus tration page16 3 Disconnect pressure switch connector A from con trol board 33 Strain Relief ti6122a Gromm
12. Check What To Do Problem If check is OK go to next check When check is not Ok refer to this column Low Fluid Output 1 Worn spray tip Relieve pressure page 7 Replace tip Refer to gun instruction manual 311937 2 Verify pump does not continue to Service pump See page 13 Displacement Pump stroke when gun trigger is released Replacement Prime valve leaking Relieve pressure page 7 Then repair prime valve See page 28 Pressure Control Replacement Suction hose connections Tighten any loose connections Check o rings on suction hose swivel Electric supply with volt meter Meter Reset building circuit breaker replace building fuse must read 105 130 Vac for 110 120 Repair electrical outlet or try another outlet Vac models and 210 255 for 240 Vac models Low voltages reduce sprayer performance Extension cord size and length Replace with a correct grounded extension cord See page 6 Grounding and Electric Require ments Leads from motor to circuit board for Be sure male terminal pins are centered and firmly damaged or loose wire connectors connected to female terminals Replace any loose Inspect wiring insulation and termi terminals or damaged wiring Securely reconnect nals for signs of overheating terminals Worn motor brushes which must be Replace brushes See page 18 Motor Brush 1 4 in 6 mm minimum Replacement Motor brushes binding in brush hold Clean brush holders Remove carb
13. act Only use an extension cord with an undamaged ground contact ti4297a Recommended extension cords for use with this sprayer e 3 wire 12 AWG 2 5 mm minimum 300 ft 90 m maximum length Smaller gauge or longer extension cords may reduce sprayer performance Spray gun ground through connection to a properly grounded fluid hose and pump Fluid supply container follow local code Solvent and Oil based fluids follow local code Use only conductive metal pails placed on a grounded sur face such as concrete Do not place the pail on a non conductive surface such as paper or cardboard which interrupts grounding continuity Grounding the metal pail connect a ground wire to the pail by clamping one end to pail and other end to ground such as a water pipe To maintain grounding continuity when flushing or relieving pressure hold metal part of the spray gun firmly to the side of a grounded metal pail then trigger the gun t19270a 311911C Pressure Relief Procedure Follow this Pressure Relief Procedure whenever you are instructed to relieve pressure stop spraying check or service equipment or install or clean spray tip i A i 1 Setfunctionselectionswitchto i OFF and unplug sprayer l Al ie I gt am AIRLESN ti8798a 2 Turn pressure to lowest setting 3 Hold gun against side of ads grounded metal flushing EE pail Trigger gun to S do relieve pressure Sat A
14. ce shroud 29 and two screws 30 Armature Short Circuit Test Quickly turn motor fan by hand If motor coasts two or three revolutions before complete stop there are no electrical shorts If motor does not spin freely armature is shorted Replace motor page 34 FinishPro 390 FinishPro 395 F a N O ti2572b ti5638a 16 311911C Fan Replacement Fan Replacement 3 Remove spring clip 1b on back of motor 4 Pull off fan 100 Installation ae 1 Slide new fan 1a in place on back of motor Be FinishPro 390 sure blades of fan face motor as shown Removal 2 Install spring clip 1b 1 Relieve pressure page 7 Disconnect power cord from outlet 3 Replace shroud 29 and two screws 30 2 Remove two screws 30 and shroud 29 29 FinishPro 395 1 Relieve pressure page 7 Disconnect power cord from outlet 2 Remove four screws 12 and shroud 23 3 Remove retaining ring 126 on fan 125 4 Pull off fan Installation 1 Slide new fan 125 on back of motor Be sure blades of fan face motor as shown 2 Install retaining ring 126 3 Replace shroud 23 and four screws 12 ti9604a 311911C 17 Motor Brush Replacement Motor Brush Replacement See Wiring Diagram page 36 FinishPro 390 Removal Replace brushes worn to less than 1 4 in omm Brushes wear differently on each side of motor check both sides 1 Relieve
15. emoval page 19 and Wiring Diagram page 36 1 Relieve pressure page 7 Disconnect power cord from outlet 4 Connect ground wire G to motor with green ground screw 31 2 Remove pump 9 Displacement Pump Replace ment page 13 5 Install Drive Housing Drive Housing Replace ment page 15 3 Remove drive housing Drive Housing Replace ment page 15 6 Install pump 9 Displacement Pump Replace ment page 13 4 Remove two screws 6 and manifold 15 7 Install shroud 29 with two screws 30 see illustra 5 Disconnectall leads from board 33 and remove tion page 16 control board Control Board Replacement Fin ishPro 390 Removal page 19 A Liberally apply grease 34 311911C Motor Replacement See Wiring Diagram page 36 FinishPro 395 CAUTION Do not drop gear cluster 44 and 40 when removing from drive housing 42 Gear cluster may stay engaged in motor front end bell or drive housing Removal 1 Relieve pressure page 7 2 Remove pump 41 Displacement Pump Replace ment page 13 3 Remove drive housing 42 Drive Housing Replacement page 15 4 Remove screws 12 from cover 50 5 Disconnectall leads from board 49 Remove screws 6 and board 49 311911C Motor Replacement 6 Remove screws 47 and control box 48 7 Remove screws 47 and manifold 15 8 Remove screws 47 and motor 54 from frame 59 Installation 1 Install new
16. emove the drain line 40 from the manifold 1 Cutdrain line 40 from barbed fitting 20 2 Unscrew barbed fitting 20 from manifold If you replace the manifold and reuse the existing barbed fitting 20 and drain line 40 cut the remaining drain line material off the end of the barbed fitting 20 with a sharp knife FinishPro 390 O I v 5 311911C Installation 1 Screw barbed fitting 20 into manifold 2 Push drain line 40 onto barbed fitting 20 Xe make the drain line more pliable and easier to install on barbed fitting heat drain line 40 end with a hair dryer or place end in hot water a few seconds FinishPro 395 Removal Unscrew drain line 55 from filter manifold 15 Installation Screw drain line 55 into filter manifold 15 FinishPro 395 ti9603a 33 Motor Replacement Motor Replacement See Wiring Diagram page 36 6 Remove ground wire G from motor endbell 7 Remove four screws 6 and motor 1 from frame 45 CAUTION Installation Do not drop gear cluster 3 and 2 when removing 1 Install new motor 1 on frame 45 with four screws drive housing 5 Gear cluster may stay engaged in 6 motor frontend bell or drive housing 2 Install manifold 15 with two screws 6 FinishPro 390 3 Install control board 33 with three screws 30 Connect all leads to board See Control Board Replacement FinishPro 390 Installation R
17. equipment or materials not supplied by Graco This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect If the claimed defect is verified Graco will repair or replace free of charge any defective parts The equipment will be returned to the original purchaser 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 PARTICULAR PURPOSE Graco s sole obligation and buyer s sole remedy for any breach of warranty shall be as set forth above The buyer agrees that no other remedy including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or any other incidental or consequential loss shall be available Any action for breach of warranty must be brought within two 2 years of the date of sale GRACO MAKES NO WARRANTY AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IN CONNECTION WITH ACCESSORIES EQUIPMENT MATERIALS OR COMPONENTS SOLD BUT NOT MANUFACTURED BY GRACO These items sold but not manufac
18. es Wait for air pressure to bleed to zero sor hums Excessive head pressure compres Electrical air unloader stuck closed Replace sor hums electrical air unloader Excessive head pressure compres Open air regulator FinishPro 395 sor hums Install air line Do Startup Operation Manual 311905 Compressor thermal switch is open Move sprayer to shaded cooler area Ensure ambient temperature is below 115 F 46 C Low compressor performance Worn compressor repair compressor with Compressor Service Kit 288723 Poor air spray pattern 1 Air cap air ports clogged Soak in solvent to clean 3 Worn spray tip Relieve pressure page 7 Replace tip Refer to gun instruction manual 311937 Water in pattern 1 Water in air line Add Water Separator Kit 289535 to air line 12 311911C Displacement Pump Replacement Displacement Pump Replacement See manual 309250 for pump repair instructions 6 Usinga flat screwdriver push retaining spring C up Push out pump pin 32 Removal 1 Relieve pressure page 7 Unplug sprayer from out let 2 Loosen two screws 30 and rotate cover 44 ti6106a 30 7 Usinga hammer loosen pump jam nut 11 Unscrew and remove pump 9 ti6140a 3 Loosen nut A and remove suction hose 35 Loosen nut B and remove the high pressure hose 14 ti6107b O 4 Cycle pump until pin 32 is in position to be removed 5 Disconnect p
19. et 8 Remove two power cord connectors C from control board ti6143b 4 Disconnect motor connector B from control board 33 5 Remove three screws 30 securing control board to housing two are located on the front and one on the back next to the power cord ti6143b 20 311911C Control Board Replacement Installation 1 Position grommet and power cord wires through strain relief in control board 33 B Strain AN Eo Relief A ti6143b Grommet ti6122a 5 Attach motor connector B and pressure control 2 Connect the power cord connectors to the correct assembly connector A terminals indicated on the control board 120V black and white 240V blue and brown on control board 33 Install shroud 29 and two screws 30 see illustra tion page 16 ti6143b 3 Carefully slide control board back into place on the side of the motor frame 4 Install three screws 30 Torque to 30 35 in lb 3 4 3 9 N m 311911C 21 Control Board Replacement FinishPro 395 Clean pad on rear of motor control board 49 Apply small amount of thermal compound to pad Install motor control board with screws 6 Connect all leads to motor control board Bundle and tie all loose wires so none are in contact with inductor coil See Wiring Diagram page 36 Installation 1 2 Removal 3 1 Relieve pressure page 7 Disconnect power cord from out
20. h 58 Install toggle boot nut 30 3 Connect three wires A to ON OFF switch 4 Install pressure control cover 50 with four screws 12 ti9665a 23 On Off Switch Replacement 3 Disconnect three wires A from ON OFF switch 58 4 Remove toggle boot nut 30 Remove ON OFF switch 58 FinishPro 390 Installation 1 Install new ON OFF switch 58 Install toggle Removal boot nut 30 1 Relieve pressure page 7 2 Connect three wires A to ON OFF switch 58 2 Remove four screws 12 and switch box cover 50 3 Install switch box cover 50 with four screws 12 Note Tag wires before removing to ensure wires are identifiable when assembling ti9649a 24 311911C Fuse Heplacement Fuse Replacement 3 Remove fuse from control board 4 Remove spare fuse from motor Installation FinishPro 390 only 1 Replace fuseon control board with spare fuse Removal 2 Install shroud 29 and two screws 30 see illustra l i tion page 16 1 Relieve pressure page 7 Disconnect power cord from outlet 2 Remove two screws 30 and shroud 29 see illus tration page 16 Spare Fuse ti9134b 311911C 25 Removing and Installing Air Filter Removing and Installing Air Filter Removal 1 Relieve pressure page 7 Disconnect power cord from outlet 2 FinishPro 390 Unscrew filter D from back of sprayer Install new filter from Compressor Filter K
21. hylene chloride other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment Such use can cause serious chemical reaction and equipment rupture and result in death serious injury and property damage BURN HAZARD Equipment surfaces can become very hot during operation To avoid severe burns do not touch hot equipment Wait until equipment has cooled completely MOVING PARTS HAZARD Moving parts can pinch or amputate fingers and other body parts e Keep clear of moving parts e Do not operate equipment with protective guards or covers removed e Pressurized equipment can start without warning Before checking moving or servicing equipment follow the Pressure Relief Procedure in this manual Disconnect power or air supply TOXIC FLUID OR FUMES HAZARD Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin inhaled or swallowed e Read MSDS s to know the specific hazards of the fluids you are using e Store hazardous fluid in approved containers and dispose of it according to applicable guidelines PERSONAL PROTECTIVE EQUIPMENT You must wear appropriate protective equipment when operating servicing or when in the operating area of the equipment to help protect you from serious injury including eye injury inhalation of toxic fumes burns and hearing loss This equipment includes but is not limited to e Protective eye wear e Clothing and res
22. it 288724 r a am x IT y I F i F F F A i fi Ti A F ie A E an te sl a A pr A y Na a as ae l a si j I i TL AL FE a j N e n of ti9266a k Fr F w Bi ma fi FinishPro 395 a Remove four screws 12 from back louvered cover 64 b Unscrew filter D from back of sprayer Install new filter from Compressor Filter Kit 288724 c Install back cover 64 with four screws 12 26 311911C Compressor Heplacement and Hepair Compressor Replacement and Repair ARA e To repair compressor use Compressor Service N Kit 288723 Refer to Thomas Compressor manual provided e Replace compressor piston assembly use Kit 288723 Removing Compressor from Sprayer 1 Relieve pressure page 7 Disconnect power cord from outlet 2 Remove front and back louvers from sprayer t9259a AZIO toda Front Louvers Back Louvers 3 Disconnect air fitting from compressor ti9262a 311911C 4 Disconnect electrical connection from solenoid valve tig265a 5 Remove compressor from sprayer Follow instruc tions provided with your repair kit ti9263a 27 Pressure Control Heplacement FinishPro 390 Pressure Control Replacement FinishPro 390 See Wiring Diagram page 36 Removal 1 Relieve pressure page 7 Disconnect power cord from outlet 2 Remove two screws 30 and shroud 29 see illus tration page
23. l PTFE acetal chrome plating leather UHMWPE aluminum tungsten carbide Dimensions FinishPro 390 Models 28 in 71 cm 22 in 56 cm 25 in 64 cm 78 Ib 43 6 kg FinishPro 395 Models 28 in 71 cm 23 in 58 cm 32 in 80 cm 96 Ib 43 6 kg 39 Warranty Warranty Graco warrants all equipment referenced in this document which is 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 from the date of sale repair or replace any part of the equipment determined by Graco to be defective This warranty applies only when the equipment is installed operated and maintained in accordance with Graco s written recommendations This warranty does not cover and Graco shall not be liable for general wear and tear or any malfunction damage or wear caused by faulty installation misapplication abrasion corrosion inadequate or improper maintenance negligence accident tampering or substitution of non Graco component parts Nor shall Graco be liable for malfunction damage or wear caused by the incompatibility of Graco equipment with structures accessories equipment or materials not supplied by Graco or the improper design manufacture installation operation or maintenance of structures accessories
24. let 4 2 Remove four screws 12 and cover 50 5 3 Disconnect all leads to motor control board 49 4 Remove screws 6 and motor control board Install cover 50 with four screws 6 A Yellow wires not used on 240V Black Blue Black VA A Potentiometer O To Compressor Black P Black White P Red x gt O f To Power Plug Green p 0 eas Transducer Ei Black White From Motor 2X White 22 HHHH m Digital Display ti9715a o o o 311911C On Off Switch Replacement See Wiring Diagram page 36 FinishPro 395 1 Relieve pressure page 7 2 Remove four screws 12 and pressure control cover 50 Note Tag wires before removing to ensure wires are identifiable when assembling 311911C On Off Switch Replacement 3 Disconnect three wires A from ON OFF switch 58 4 Remove toggle boot nut 30 5 Remove two yellow wires B from ON OFF switch Remove ON OFF switch Installation 1 Connect two yellow wires B to ON OFF switch 58 2 Install new ON OFF switc
25. lt p A ti9270a CS 4 Turn prime valve down gt ar ti2719a If you suspect the spray tip or hose is clogged or that pressure has not been fully relieved after following the steps above VERY SLOWLY loosen tip guard retaining nut or hose end coupling to relieve pressure gradually then loosen completely Clear hose or tip obstruction 5 Engage trigger safety lock on gun if unit is being shut down or left unattended 311911C Pressure Relief Procedure General Repair Information Flammable materials spilled on hot bare motor could cause fire or explosion To reduce risk of burns fire or explosion do not operate sprayer with cover removed e Keep all screws nuts washers gaskets and electri cal fittings removed during repair procedures These parts usually are not provided with replacement kits e Test repairs after problems are corrected If sprayer does not operate properly review repair procedure to verify you did it correctly See Troubleshooting page 8 e Overspray may build up in the air passages Remove any overspray and residue from air pas sages and openings in the enclosures whenever you service sprayer e Do not operate sprayer without motor shroud in place Replace if damaged Motor shroud directs cooling air around motor to prevent overheating and insulates control board from accidental electric shock To reduce risk of serious injury including electric shock Do not to
26. on Use equipment only in well ventilated area Eliminate all ignition sources such as pilot lights cigarettes portable electric lamps and plastic drop cloths potential static arc Sprayer generates sparks When flammable liquid is used in or near the sprayer or for flushing or cleaning keep sprayer at least 20 feet 6 m away from explosive vapors Keep work area free of debris including solvent rags and gasoline Do not plug or unplug power cords or turn lights on or off when flammable fumes are present Ground equipment and conductive objects in work area Read Grounding instructions If there is static sparking or you feel a shock stop operation immediately Do not use equipment until you identify and correct the problem Keep a working fire extinguisher in the work area ELECTRIC SHOCK HAZARD Improper grounding setup or usage of the system can cause electric shock Turn off and disconnect power cord before servicing equipment Use only grounded electrical outlets Use only 3 wire extension cords Ensure ground prongs are intact on sprayer and extension cords Do not expose to rain Store indoors SKIN INJECTION HAZARD High pressure fluid from gun hose leaks or ruptured components will pierce skin This may look like just a cut but it is a serious injury that can result in amputation Get immediate surgical treatment Do not point gun at anyone or at any part of the body Do not put your hand over
27. on dust by using ers compressed air to blow out brush dust Low stall pressure Turn pressure Replace pressure control assembly See page 28 control knob fully clockwise Pressure Control Assembly Replacement Motor armature for shorts by using Replace motor See page 34 Motor Replacement an armature tester growler or per form spin test page 16 10 311911C What To Check Problem If check is OK go to next check Motor runs and pump strokes Intake valve ball and piston ball are seating properly 6 Leaking around throat packing nut which may indicate worn or damaged packings Motor runs but pump does not 1 stroke Displacement pump pin damaged or missing Connecting rod assembly for dam age Gears or drive housing Motor is hot and runs intermittently Be sure ambient temperature where sprayer is located is not more than 115 F 46 C and sprayer is not located in direct sun Motor has burned windings indicated by removing positive red brush and seeing burned adjacent commutator bars Tightness of pump packing nut Overtightening tightens packings on rod restricts pump action and dam ages packings Low air output at gun 2 Sprayer air regulator may be closed FinishPro 395 311911C 1 Air valve at gun may be closed Turn air valve counter clockwise to open 3 Air connections may be loose Troubleshooting What To Do When check is not OK refer to thi
28. ower cord from outlet 311911C 13 Displacement Pump heplacement Installation 5 Screw in pump until threads are flush with top of drive housing opening If pump pin works loose parts could break off due to force of pumping action Parts could project through air and result in serious injury or property damage CAUTION 1 Extend pump piston rod full Apply grease to top of pump rod at D or inside connecting rod 7 Install jam nut 11 on pump threads DIO NA ti6112c Ju 7 Screw jam nut 11 up onto pump until nut stops Tighten jam nut by hand then tap 1 8 to 1 4 turn with a 20 oz maximum hammer to approximately 75 ft lb 102 Nem ti5732b l l 8 Install suction tube 35 and high pressure hose 2 Install pump rod D into connecting rod 7 14 Tighten nuts A and B 3 Install pump pin 32 Verify retainer spring C is in groove over pump pin ti6105b 9 Fill packing nut with Graco TSL until fluid flows onto top of seal Rotate cover 44 Tighten screws 30 4 Push pump 9 up until pump threads engage ti5735b 14 311911C Drive Housing Replacement Drive Housing Replacement Installation 1 Apply a liberal coat of grease to gears and needle bearing surfaces Install thrust bearing 4 and gears 2 and 3 in front endbell housing Removal Needle Bearing Surfaces 1 Relieve pressure page 7 2 Remove pump 9 Displacement Pump Replace ment
29. pirator as recommended by the fluid and solvent manufacturer e Gloves e Hearing protection Component Identification Component Identification FinishPro 390 C t FinishPro 395 LA Y r L K it i 1 Y Y i om ent A e ae F a e gt f Aap le em i gt A AO AAT A a A En i i I A a x A be ba A i at GT 168 i i le IN F Li 0 SUI i i vi i Y 74 H E E Cl n r NO 4 311911C Component Identification Component Identification 1 Prime Drain Tube Hose Air Hose Connection O S Prime Spray Valve Fluid Outlet _ e i O e p e pe Gun see manual O Beil i Filter Manifold OA Fluid Pressure Control 10 Power Function Selector 11 Suction Tube 12 Gun Air Regulator Ci CI 17 Gun Filter 18 High Pressure Paint Swivel 19 Hose T clip Flex Coil Air Hose Fluid Pressure Gage FinishPro 390 model only 311911C 5 Installation Installation Grounding and Electric Requirements The sprayer cord includes a grounding wire with an appropriate grounding contact de e i The sprayer requires 110 120 Vac Sprayers 100 120 Vac 50 60 Hz 15A 1 phase circuit with a grounding receptacle 230 Vac Sprayers 230 Vac 50 60 Hz 10A 1 phase cir cuit with a grounding receptacle Never use an outlet that is not grounded or an adapter ti5573a Do not use the sprayer if the electrical cord has a dam aged ground cont
30. rom filter housing Installation 1 Install packing o ring and pressure control trans ducer in filter housing Torque to 30 35 ft lb Removal 2 Thread transducer lead plastic connector up through transducer grommet 1 Relieve pressure page 7 Unplug sprayer 3 Install filter housing with two screws 2 Remove screws and cover 4 Connect lead to motor control board 3 Disconnect lead E from motor control board 5 Install cover with screws 4 Remove two screws and filter housing 5 Thread transducer lead plastic connector down through transducer grommet 30 311911C Pressure Adjust Potentiometer FinishPro 395 Removal 1 Relieve pressure page 7 Unplug sprayer 2 Remove screws and cover 3 Disconnect all leads from motor control board 4 Remove potentiometer knob nut and pressure adjust potentiometer Installation 1 Install pressure adjust potentiometer nut and poten tiometer knob a Turn potentiometer fully clockwise b Install knob at full clockwise position 2 Connect all leads to motor board 3 Install cover with screws Stored Data The SmartControl contains stored data to assist with troubleshooting and maintenance to view this stored data on the digital display proceed as follows 1 Relieve pressure page 7 2 Plug in sprayer 3 Hold down digital display button and turn sprayer ON 4 Release display button about 1 second after turning on sprayer
31. s column Close prime valve See Pump Manual 309250 Strain paint before using to remove particles that could clog pump See Pump Manual 309250 7 Pump rod damaged See Pump Manual 309250 Replace pump pin if missing Be sure retaining spring is fully in groove all around connecting rod See page 13 Displacement Pump Replacement Replace connecting rod assembly See page 13 Displacement Pump Replacement Inspect drive housing assembly and gears for damage and replace if necessary See page 15 Drive Housing Replacement Move sprayer to shaded cooler area if possible Replace motor See page 34 Motor Replacement Loosen packing nut Check for leaking around throat Replace pump packings if necessary See pump manual 309250 Pull to unlock and turn air regulator clockwise to Check all connections for leaking air 11 Troubleshooting What To Check What To Do Problem If check is OK go to next check When check is not Ok refer to this column Low air output at gun 4 Damaged leaking air supply hose Air intake filter clogged 2 Voltage to compressor below 105 Try another outlet Reduce extension cord length or Vac for 110 120 Vac models or increase extension cord gauge below 210 Vac for 240 Vac models 3 Loose power connections Verify all connections are firm 4 Excessive head pressure compres Moisture frozen in air supply line sor hums Excessive head pressure compr
32. ssembly 5 Use a crimping tool to squeeze the ends of the butt splice E tightly around each wire Pull gently on each wire to be sure it will not pull out of the butt splice 6 Using new tie wrap F from kit wrap tie around motor and wires only Trim off excess Be sure pres sure hose and wire leads are not caught in tie wrap 7 Reconnect motor connector D to control board 33 ti5637a 8 Replace shroud 29 and two screws 30 see illus tration page 16 311911C Motor Brush Replacement FinishPro 395 Removal Replace brushes worn to less than 1 2 in Brushes wear differently on each side of motor check both sides Brush Repair Kit 287735 is available 1 Read General Repair Information page 7 2 Relieve pressure page 7 3 Remove motor shroud and two inspection covers A ti7386a 4 Push clip spring B to release hook C from brush holder D Pull out spring clip B 5 Pull brush lead E off terminal F Remove brush G AN Motor lead do not disconnect D Minimum 0 5 in 12 5 mm Ca A Included in Brush Repair Kit o C E Cai A NO y F ti7387a 311911C Motor Brush Replacement 6 Inspect commutator for excessive pitting burning or gouging A black color on commutator is normal Have commutator resurfaced by a motor repair shop if brushes wear too fast Installation CAUTION When installing brushes follow all steps carefully
33. the spray tip Do not stop or deflect leaks with your hand body glove or rag Engage trigger lock when not spraying Follow Pressure Relief Procedure in this manual when you stop spraying and before cleaning checking or servicing equipment 311911C 311911C Warning WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury e Do not exceed the maximum working pressure or temperature rating of the lowest rated system component Read Technical Data in all equipment manuals Use fluids and solvents that are compatible with equipment wetted parts Read Technical Data in all equipment manuals Read fluid and solvent manufacturers warnings For complete information about your material request MSDS from distributor or retailer Check equipment daily Repair or replace worn or damaged parts immediately with genuine Graco replacement parts only Do not alter or modify equipment Use equipment only for its intended purpose Call your Graco distributor for information Route hoses and cables away from traffic areas sharp edges moving parts and hot surfaces Do not kink or overbend hoses or use hoses to pull equipment Keep children and animals away from work area Comply with all applicable safety regulations Keep children and animals away from work area Do not operate the unity when fatigued or under the influence of drugs or alcohol PRESSURIZED ALUMINUM PARTS HAZARD Do not use 1 1 1 trichloroethane met
34. trol Heplacement FinishPro 390 Motor Control Board Diagnostics FinishPro 395 e Keep new transducer on hand for use for test e Refer to Digital Display Messages page 30 CAUTION Do not allow sprayer to develop fluid pressure without transducer installed Leave drain valve open if test 1 Relieve pressure page 7 and unplug sprayer transducer is used 2 Remove screws and cover 3 Turn ON OFF switch ON 4 Observe LED operation and reference following table LED Blinks Sprayer Operation What To Do Two times repeatedly Sprayer shuts down and Run away pressure Pressure greater than Replace motor control board or LED continues to blink 4500 psi 310 bar or damaged pressure pressure transducer two times repeatedly transducer Three times repeatedly Sprayer shuts down and Pressure transducer is faulty or missing Check transducer connection LED continues to blink Open drain valve Substitute three times repeatedly new transducer for transducer in sprayer If sprayer runs replace transducer Four times repeatedly Sprayer shuts down and Line voltage is too high Check for voltage supply prob LED continues to blink lems four times repeatedly Five times repeatedly Sprayer does not start or Motor fault Check for locked rotor shorted shuts down and LED con wiring or disconnected motor tinues to blink five times Repair or replace failed parts repeatedly 311911C 29 Pressure Control Heplacement FinishPro
35. tured by Graco such as electric motors switches hose etc are subject to the warranty if any of their manufacturer Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties In no event will Graco be liable for indirect incidental special or consequential damages resulting from Graco supplying equipment hereunder or the furnishing performance or use of any products or other goods sold hereto whether due to a breach of contract breach of warranty the negligence of Graco or otherwise ADDITIONAL WARRANTY COVERAGE Graco does provide extended warranty and wear warranty for products described in the Graco Contractor Equipment Warranty Program TO PLACE AN ORDER contact your Graco distributor or call 1 800 690 2894 to identify the nearest distributor All written and visual data contained in this document reflects the latest product information available at the time of publication Graco reserves the right to make changes at any time without notice mm 311911 This manual contains English Graco Headquarters Minneapolis International Offices Belgium Korea China Japan GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 http www graco com 2 2007 Rev 07 2008 40 311911C
36. uch moving or electric parts with fingers or tools while testing repair Unplug sprayer when power is not required for testing Install all covers gaskets screws and washers before you operate sprayer CAUTION Do not run sprayer dry for more than 30 seconds Doing so could damage pump packings Protect the internal drive parts of this sprayer from water Openings in the cover allow for air cooling of the mechan ical parts and electronics inside If water gets in these openings the sprayer could malfunction or be perma nently damaged Prevent pump corrosion and damage from freezing Never leave water or water base paint in sprayer in cold weather Freezing fluids can seriously damage sprayer Store sprayer with Pump Armor to protect sprayer during storage Do not allow material to dry on gun air cap Poor spray finish could result Troubleshooting Troubleshooting What To Check What To Do Problem If check is OK go to next check When check is not Ok refer to this column Sprayer Won t Operate Basic Fluid Pressure 1 Pressure control knob setting Motor Slowly increase pressure setting to see if motor will not run if set at minimum fully starts counter clockwise Spray tip or fluid filter may be Relieve pressure page 7 Then clear clog or clean clogged gun filter Refer to gun instruction manual 311937 Basic Mechanical Pump frozen or hardened paint Thaw sprayer if water or water based paint has fro
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