background image

Troubleshooting

334730F

35

Basic electrical problems

Motor leads are securely 

fastened and properly mated

Replace loose terminals; crimp 

to leads. Be sure terminal are 

firmly connected.
Clean circuit board terminals. 

Securely reconnect leads.

For loose motor brush lead 

connections and terminals. 

Tighten terminal screws. 

Replace brushes if leads are 

damaged. 

Brushes must be 1/2 in. 

[13mm] minimum. NOTE: 

Brushes do not wear at the 

same rate on both sides of 

motor. Check both brushes.

Replace brushes. 

Broken or misaligned motor 

brush springs. Rolled portion of 

spring must rest squarely on 

top of brush. 

Replace spring if broken. 

Realign spring with brush.

Motor brushes may be binding 

in brush holders.

Clean brush holders. Remove 

carbon with small cleaning 

brush. Align brush leads with 

slot in brush holder to assure 

free vertical brush movement.

Motor armature commutator for 

burn spots, gouges or extreme 

roughness.

Remove motor and have motor 

shop resurface commutator if 

possible.

Problem

What to Check

How to check

Summary of Contents for FinishPro II 395 PC

Page 1: ... 17C421 17C320 17C321 3300 psi 228 bar 22 8 MPa Maximum Working Pressure See page 3 for additional model information Important Safety Instructions Read all warnings and instructions in this manual and related manuals Be familiar with the controls and the proper usage of the equipment Save these instructions Related Manuals Gun 333182 Pump 334599 ti25382a Use only genuine Graco replacement parts Th...

Page 2: ...y Tip Installation 17 Spray 18 Clear Tip Clog 20 Digital Display 21 Cleanup 23 Maintenance 26 Troubleshooting 27 Mechanical Fluid Flow 27 Electrical 30 Sprayer 39 Sprayers Parts List 41 Control and Filter 42 Control and Filter Parts List 43 Compressor 44 Compressor Parts List 45 Wiring Diagrams 46 120V US 110V UK 46 230V 47 Technical Specifications 48 Graco Standard Warranty 50 Graco Information 5...

Page 3: ...ro II 395 PC 17C417 230 CEE 7 7 FinishPro II 395 PC 17C418 230 Europe Multicord FinishPro II 395 PC 17C421 110 UK FinishPro II 395 PC 17C320 230 Asia ANZ FinishPro II 395 PC 17C321 230 China 110474 Certified to CAN CSA C22 2 No 68 Conforms to UL 1450 ...

Page 4: ...hen repair or replacement of the cord or plug is required do not connect the grounding wire to either flat blade terminal The wire with insulation having an outer surface that is green with or without yellow stripes is the grounding wire Check with a qualified electrician or serviceman when the grounding instructions are not completely understood or when in doubt as to whether the product is prope...

Page 5: ...unless they are anti static or conductive Connect to a grounded outlet and use grounded extensions cords Do not use a 3 to 2 adapter Do not use a paint or a solvent containing halogenated hydrocarbons Do not spray flammable or combustible liquids in a confined area Keep spray area well ventilated Keep a good supply of fresh air moving through the area Sprayer generates sparks Keep pump assembly in...

Page 6: ...e of producing 3300 psi Use Graco replacement parts or accessories that are rated a minimum of 3300 psi Always engage the trigger lock when not spraying Verify the trigger lock is functioning properly Verify that all connections are secure before operating the unit Know how to stop the unit and bleed pressure quickly Be thoroughly familiar with the controls EQUIPMENT MISUSE HAZARD Misuse can cause...

Page 7: ...e equipment with protective guards or covers removed Pressurized equipment can start without warning Before checking moving or servicing equipment follow the Pressure Relief Procedure and disconnect all power sources 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 Read SDSs to know the specific hazards of t...

Page 8: ...e Control C Air Hose Connection D Prime Valve E Gun Filter F Tip Guard G Spray Tip H Gun J Airless Hose K Power Cord L Trigger Lock M Drain Tube N Fluid Intake P Pump R Fluid Outlet S Hanger T Filter U Finger Guard TSL Fill Point V Pail Hook W Display X Gun Air Regulator Y Sprayer Air Pressure Regulator Z Air Pressure Gauge Model Serial Tag Not shown ...

Page 9: ... reduce sprayer performance Pails Solvent and oil based fluids follow local code Use only conductive metal pails placed on a grounded surface such as concrete Do not place pail on a non conductive surface such as paper or cardboard which interrupts grounding continuity Always ground a metal pail connect a ground wire to the pail Clamp one end to the pail and the other end to a true earth ground su...

Page 10: ...gger lock 4 Hold a metal part of the gun firmly to a grounded metal pail Trigger the gun to relieve pressure 5 Engage trigger lock This equipment stays pressurized until pressure is manually relieved To help prevent serious injury from pressurized fluid such as skin injection splashed fluid and moving parts follow the Pressure Relief Procedure whenever sprayer is stopped and before sprayer is clea...

Page 11: ...or hose is clogged or that pressure has not been fully relieved a VERY SLOWLY loosen tip guard retainingnutorhoseendcouplingto relieve pressure gradually b Loosen nut or coupling completely c Clear hose or tip obstruction Trigger Lock Always engage the trigger lock when sprayer is stopped to prevent the gun from being triggered accidentally by hand or if dropped or bumped ti24607a ti25411a ...

Page 12: ... Connect Graco airless hose to fluid outlet Use wrenches to tighten securely 2 Connect other end of hose to gun 3 Use wrenches to tighten securely 4 Engage trigger lock 5 Remove tip guard air cap 6 When unpacking sprayer for the first time remove packaging materials from inlet strainer After long term storage check inlet strainer for clogs and debris ti24616a ti25412a ti25450a ti25407a ...

Page 13: ...zzle into the top center opening in the grill at the front of the sprayer b Squeeze bottle to dispense enough TSL to fill the space between the pump rod and packing nut seal 8 Make certain SELECTOR switch is OFF 9 Plug power supply cord into a properly grounded electrical outlet 10 Turn prime valve down ti24638a ti24639a ti25541a ti24651a ti24608a ...

Page 14: ...ineral spirits to flush oil based paint 20 Set SELECTOR switch to AIRLESS position 21 Turn prime valve horizontal Disengage trigger lock 22 Hold a metal part of the gun firmly to a grounded metal pail Trigger gun and flush until clean 23 Set SELECTOR switch to OFF position 24 Engage trigger lock 25 Sprayer is now ready to startup and spray in airless mode 26 Attach air hose to sprayer air hose con...

Page 15: ...tion 4 Place fluid intake in paint pail Place drain tube in waste pail 5 Increase pressure 1 2 turn to start motor Allow paint to circulate through drain tube for 15 seconds 6 Turn prime valve horizontal Disengage trigger lock 7 Hold gun against grounded metal waste pail Trigger gun until paint appears ti25345a ti25537a ti24645a 15 s ti25455a ti25471a ...

Page 16: ...ef Procedure page 10 thentightenallfittingsandrepeatStartup procedure If there are no leaks continue with the next step 10 Screw tip assembly onto gun and tighten See Spray Tip Installation page 17 For gun assembly instructions see separate gun manual High pressure spray is able to inject toxins into the body and cause serious bodily injury Do not stop leaks with hand or rag ti25472a 20 s ti25473a...

Page 17: ...er end of gun Hand tighten Tip Selection ti25450a NOTICE If air cap is not fully installed on gun fluid pressure can force paint into air line and dam age sprayer ti25475a 6 35 33a 33b 33 ti25474a 6 Material Oil Based Water Based Tip Size Fluid Setting Air setting Stains Varnish 008 010 500 700 psi 34 48 bar 10 15 psi 0 7 1 0 bar Lacquers 008 010 700 1000 psi 48 69 bar 10 15 psi 0 7 1 0 bar DTM 01...

Page 18: ...ons moisture can accumulate in the air line If this occurs install an in line desiccant filter 24U981 or 24U982 to prevent moisture from entering the gun 1 Set SELECTOR switch to AIRLESS position 2 Open gun air regulator all the way 3 Prime pump see Startup page 15 4 Set fluid pressure to highest setting 5 While spraying gun decrease fluid pressure until tails appear in spray pattern 6 Set SELECTO...

Page 19: ...Startup page 15 3 Start with pressure turned to the lowest setting Spray test pattern Gradually increase fluid pressure until you achieve a consistent spray pattern without heavy edges Use a smaller tip size if pressure adjustment alone does not eliminate heavy edges Hold gun perpendicular and 10 12 inches from the surface Overlap strokes by 50 Move gun before triggering and release trigger before...

Page 20: ...ck Return spray tip to original position Disengage trigger lock and continue spraying a Flat tip Remove and clean guard and tip b RAC Tip Proceed to next step 4 Rotate tip 180 5 Disengage trigger lock 6 Trigger gun at waste area to clear clog 7 Engage trigger lock 8 Rotate tip back 180 to spray position ti25450a ti25549a ...

Page 21: ...ressure Relief Procedure page 10 2 Plug sprayer into grounded outlet Set SELECTOR switch to AIRLESS position 3 The pressure is displayed Dashes indicate pressure is less than 200 psi 14 bar 1 4 MPa 4 Press and hold display button to change pressure units psi bar or MPa Stored Data Display 1 Set SELECTOR switch to OFF position ti25540a ti2786a ti2888a ti25541a ...

Page 22: ...tton again to display Data Point 2 Motor run time in hours is displayed 23 5 Press display button again to display Data Point 3 This will be the last error code 6 To erase last error code press and hold display button 7 Press display button again to display Data Point 4 The software revision is displayed 8 Press display button again to return to Data Point 1 9 Set SELECTOR switch to OFF position t...

Page 23: ...id Use water for water base paint and mineral spirits for oil based paint Place drain tube in waste pail 5 To flush drain tube turn prime valve down 6 Increase pressure 1 2 turn to start motor Hold gun against paint pail Disengage trigger lock Trigger gun and increase pressure until the pump runs steady and flushing fluid appears 7 Stop triggering gun Move gun to waste pail hold gun against pail t...

Page 24: ...out of drain tube clear 9 Raise fluid intake above flushing fluid 10 With prime valve horizontal Trigger gun into flushing pail to purge fluid from hose 11 Set SELECTOR switch to AA Air Assisted position 12 Trigger gun and slowly increase air pressure to blow material out of the gun air passages 13 Engage trigger lock ti25471a ti24714a ti25596a ti25450a ...

Page 25: ...ter from gun and sprayer if installed Clean and inspect Install filter See separate gun manual 16 If flushing with water flush again with mineral spirits or Pump Armor to leave a protective coating to prevent freezing or corrosion 17 Wipe sprayer hose and gun with a rag soaked in water or mineral spirits ti25543a ti25509a ti25544a ti25545a ...

Page 26: ...t be 1 2 in 13mm minimum length NOTE Brushes do not wear at the same rate on both sides of motor Check both brushes Every 1000 gallons 3785 liters Check sprayer stall With sprayer gun NOTtriggered sprayer motor should stall and not restart until gun is triggered again If sprayer starts again with gun NOT triggered inspect pump for internal external leaks and check prime valve for leaks Every 1000 ...

Page 27: ...ual Spray tip clogged Relieve pressure Check and clean spray tip Paint supply Refill and reprime pump Intake strainer clogged Remove and clean then reinstall Intake valve ball and piston ball are not seating properly Remove intake valve and clean Check balls and seats for nicks replace if necessary See pump manual Strain paint before using to remove particles that could clog pump Fluid filter or t...

Page 28: ...e brushes Broken and misaligned motor brush springs Rolled portion of spring must rest squarely on top of brush Replace spring if broken Realign spring with brush Motor brushes are binding in brush holders Clean brush holders remove carbon dust with a small cleaning brush Align brush lead with slot in brush holder to assure free vertical brush movement Motor runs but pump does not stroke Connectin...

Page 29: ...sible during priming Intake valve is leaking Clean intake valve Be sure ball seat is not nicked or worn and that ball seats well Reassemble valve Pump packings are worn Replace pump packings See pump manual Paint is too thick Thin the paint according to supplier recommendations Sprayer operates for 5 to 10 minutes then stops Pump packing nut too tight When pump packing nut is too tight the packing...

Page 30: ...tatus light Set the SELECTOR switch to OFF remove the control cover then set SELECTOR switch to AIRLESS Observe the status light Blinking LED total count equals the error code for example two blinks equals CODE 02 Keep clear of electrical and moving parts during troubleshooting procedures To avoid electrical shock hazards when covers are removed for troubleshooting wait 7 seconds after disconnecti...

Page 31: ...next step Install new transducer Connect power set SELECTOR switch to AIRLESS and control knob 1 2 turn clockwise Replace control board if sprayer does not run properly Sprayer does not run at all AND Display shows E 03 OR Control board status light blinks 3 times repeatedly Check transducer or transducer connections control board is not detecting a pressure signal Set SELECTOR switch to OFF and d...

Page 32: ... sprayer If motor runs check for locked or frozen pump or drive train If sprayer does not run continue to step 2 2 Set SELECTOR switch to OFF and disconnect power to sprayer 3 Disconnect motor connector s from control board socket s Check that motor connector and control board contacts are clean and secure If contacts are clean and secure continue to step 4 4 Connect a DC voltmeter across the two ...

Page 33: ...n open is found replace the motor 7 Check motor thermal protection Motor should be at ambient temperature for this test Connect the yellow leads from the motor to an Ohm meter Meter should indicate continuity or Ohms depending on the motor type Problem What to Check How to check YELLOW BLACK RED ti24723a 1 3 ohms YELLOW BLACK RED ti24725a ...

Page 34: ...tus light blinks 6 times repeatedly Motor is hot or there is a fault in the motor thermal device Allow sprayer to cool If sprayer runs when cool correct cause of overheating Keep sprayer in cooler location with good ventilation Make sure motor air intake is not blocked If sprayer still does not run replace motor Sprayer does not run at all AND Display shows E 08 OR Control board status light blink...

Page 35: ...es do not wear at the same rate on both sides of motor Check both brushes Replace brushes Broken or misaligned motor brush springs Rolled portion of spring must rest squarely on top of brush Replace spring if broken Realign spring with brush Motor brushes may be binding in brush holders Clean brush holders Remove carbon with small cleaning brush Align brush leads with slot in brush holder to assur...

Page 36: ...troubleshooting Sprayer Will Not Run see following pages for steps See Step 2 Do you have over 100 VAC 220 VAC for 230v units Repair or replace power cord See Step 3 Is there Continuity through the thermal switch wires See Step 4 Does the motor run Replace the potentiometer Replace the transducer Replace the control board If motor is hot let cool and retest If Step 3 still shows no continuity repl...

Page 37: ...Black J11 J8 J7 N L C15 White Control Board Step 2 Plug power cord in and turn switch ON Connect Probes to ON OFF switch Turn meter to AC Volts ti24728a BEEP Yellow Thermistor Wires to motor Step 3 Check motor thermal switch Unplug yellow wires Meter should read continuity NOTE Motor should be cool during reading ti24729a J8 Control Board Step 4 Disconnect potentiometer Plug power cord in and turn...

Page 38: ...ting Procedure Plumb pressure gauge into paint hose plug sprayer in and turn power switch ON Does sprayer reach or exceed its maximum pressure Mechanical problem See the proper fluid pump manual for the sprayer for further troubleshooting procedures Is the control board status light on NO Replace the control board NO Replace the control board NO YES YES Unplug the transducer from control board Doe...

Page 39: ...rayer 78 76 103 54 66 87 124 80 77 12 64 12 67 114 88 59 23 65 12 47 111 116 191 54a 54b ti25385a 63 See page 42 1 2 2 2 2 Ref Torque 140 160 in lb 15 8 18 1 N m 30 35 in lb 3 4 4 0 N m 1 2 See page 44 for Compressor parts ...

Page 40: ... 12 43 45 132 84 60 14 102 57 62 55 120 70 105 107 ti25384a 200 61 101 46b 46g 46e 46a 46 46d 46f 40 25 44 26 28 29 27 1 2 1 3 4 Ref Torque 140 160 in lb 15 8 18 1 N m 30 35 in lb 3 4 4 0 N m Hammer tight 25 30 ft lb 33 9 40 7 N m 1 2 3 4 ...

Page 41: ... 248189 FAN motor 1 54b 115477 SCREW mach Torx painted 1 55 287952 HOSE drain Ultra hi boy includes 39 1 57 246385 STRAINER 7 8 14 unf 1 59 24U249 FRAME cart hi AA 1 60 17C992 TUBE suction includes 14 57 84 102 120 1 61 GUN assy AA G40 262929 Models 17C417 17C321 1 262932 Models 17C418 17C421 17C320 1 62 276888 CLIP drain line 1 63 LABEL warning fire explo sion skin 15B516 Model 17C417 1 15H087 Mo...

Page 42: ... 47 36 27 17 3 51 18 2 58 20 11 19 24 4 6 6 7 30 81 12 107 38 5 26 35 49 37 16 109 106 ti25528a 37 128 1 2 5 6 7 1 Ref Torque 140 160 in lb 15 8 18 1 N m 30 35 in lb 3 4 4 0 N m 20 25 in lb 2 3 2 8 N m 37 43 ft lb 50 2 58 3 N m 130 150 in lb 14 7 16 9 N m 1 2 5 6 7 ...

Page 43: ...dj pressure with nut 1 38 243222 TRANSDUCER pres sure control includes 3 1 47 117493 SCREW mach hex washer hd 4 48 CONTROL BOX machined 15J469 Model 17C417 1 15M176 Model 17C418 17C421 17C320 17C321 1 49 CONTROL BOARD 288840 Model 17C417 1 288842 Model 17C418 17C421 17C321 1 288843 Model 17C320 1 51 24B026 KIT display st includes 106 107 1 58 SWITCH toggle 1 120544 Model 17C417 120844 All other mo...

Page 44: ...94 21 6 31 182 89 82 141 184 185 91 92 93 85 90 95 31 96 146 95 106 107 170 105 112 169 86a 131 186 136 188 140 147 135 138 165 168 166 167 183 108 108 108 108 133 113 148 ti25529a 2 1 Ref Torque 60 85 in lb 6 8 9 6 N m 95 100 in lb 10 7 11 3N m 1 2 ...

Page 45: ... hex mscr 1 105 120653 FITTING push to conn 1 106 120753 FITTING push to con nect elbow 1 107 15K391 TUBE air 1 108 15B822 TUBE air 2 112 195551 RETAINER plug adapter 1 113 16X530 CORD pwr comp female end 1 131 16X915 TANK painted 1 133 16X477 HOSE air 1 135 127343 SWITCH pressure 1 136 127339 VALVE check 1 8 in mnpt x fnpt 1 138 801012 GROMMET 1 140 115942 NUT hex flange head 2 141 127340 VALVE c...

Page 46: ...SSOR BLACK BLACK WHITE WHITE BROWN BROWN BROWN PRESSURE SWITCH BLUE GREEN YELLOW WHITE BLACK WHITE RED 2X WHITE DIGITAL DISPLAY TRANSDUCER BLACK POTENTIOMETER BLACK TO COMPRESSOR BROWN GREEN YELLOW BLACK GREEN BLUE BLACK YELLOW YELLOW TO POWER PLUG ON OFF SWITCH FROM MOTOR ti22659b ...

Page 47: ... WHITE WHITE BROWN BROWN BROWN PRESSURE SWITCH BLUE GREEN YELLOW WHITE BLACK WHITE FERRITE BEAD RED 2X WHITE DIGITAL DISPLAY TRANSDUCER BLACK POTENTIOMETER BLACK TO COMPRESSOR BROWN BROWN BROWN GREEN YELLOW GREEN BLUE BLUE TO POWER PLUG ON OFF SWITCH FROM MOTOR ti22660b ...

Page 48: ...27 bar Maximum material pressure AA US UK 2800 psi 193 bar Europe Asia Australia 3300 psi 227 bar Atomizing air output US UK 3 2 cfm 3 2 cfm Europe Asia Australia 2 9 cfm 2 9 cfm Air pressure 35 psi 2 4 bar Dimensions Length 32 5 in 82 5 cm Width 21 in 53 3 cm Height 40 5 in 102 8 cm Weight bare 110 lb 49 9 kg Noise dBa 70 psi 0 48 MPa 4 8 bar Sound pressure 79 dBA Sound power 96 dBA Materials of ...

Page 49: ...cetal leather UHMWPE aluminum tungsten carbide polyethylene fluoroelastomer urethane Notes Startup pressures and displacement per cycle may vary based on suction condition discharge head air pressure and fluid type Sound pressure measured 3 feet 1 meter from equipment Sound power measured per ISO 3744 FinishPro II 395 PC US Metric ...

Page 50: ...s 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 inci...

Page 51: ...Information For the latest information about Graco products visit www graco com For patent information see www graco com patents TO PLACE AN ORDER contact your Graco distributor or call 1 800 690 2894 to identify the nearest distributor ...

Page 52: ...hanges at any time without notice Original instructions This manual contains English MM 334730 Graco Headquarters Minneapolis International Offices Belgium China Japan Korea GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 USA Copyright 2015 Graco Inc All Graco manufacturing locations are registered to ISO 9001 www graco com Revision F January 2019 ...

Reviews: