Graco FinishPro 311911C Repair Manual

Airless/air-assisted sprayer

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Repair

FinishPro

Airless/Air-Assisted Sprayer

- 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!

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:

Region

FinishPro 390

Europe CEE 7/7

Europe Multi Cord

Asia/Australia

Related Manuals:

311905

309250

311937

312100

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

™

390/395

FinishPro 395

249690

249691

255110

255111

255112

255113

255114

255115

255116

255117

311911C

FinishPro 395

FinishPro 390

ti9026a

ti9019a

Table of Contents

Summary of Contents for Graco FinishPro 311911C

Page 1 Repair ™ FinishPro Airless/Air-Assisted Sprayer - 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! 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.
Page 2 Warning Warning The following warnings are for the setup, use, grounding, maintenance and repair of this equipment. 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.
Page 3 EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • 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.
Page 4: Component Identification
Component Identification Component Identification FinishPro 390 FinishPro 395 ti9021a ti9018a 311911C...
Page 5 Component Identification Item 311911C Component Prime/Drain Tube/Hose Air Hose Connection Prime/Spray Valve Fluid Outlet Air/Fluid Supply Hose Displacement Pump Gun (see manual) Filter Manifold Fluid Pressure Control Power/Function Selector Suction Tube Gun Air Regulator Direct Immersion Tube (FinishPro 390 model only) Sprayer Air Pressure Regulator (FinishPro 395 model only) Digital Display (FinishPro 395 model only) Air Pressure Gauge (FinishPro 395 model only)
Page 6: Installation
Installation Installation Grounding and Electric Requirements The sprayer cord includes a grounding wire with an appropriate grounding contact. 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.
Page 7: Pressure Relief Procedure
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. 1. Set function selection switch to OFF and unplug sprayer. 2. Turn pressure to lowest setting. 3.
Page 8: Troubleshooting
Troubleshooting Troubleshooting Problem (If check is OK, go to next check) Sprayer Won’t Operate Basic Fluid Pressure Basic Mechanical Basic Air Pressure What To Check Pressure control knob setting. Motor will not run if set at minimum (fully counter-clockwise). Spray tip or fluid filter may be clogged.
Page 9 Problem (If check is OK, go to next check) Basic Electrical See wiring diagram, page 36 10. Motor armature for shorts using 11. Pressure control not plugged in to 311911C What To Check Electric supply. Meter must read 105-130 Vac for 110-120 Vac models and 210-255 Vac for 230 Vac mod- els.
Page 10 Troubleshooting Problem (If check is OK, go to next check) Low Fluid Output 10. Low stall pressure. Turn pressure 11. Motor armature for shorts by using What To Check Worn spray tip. Verify pump does not continue to stroke when gun trigger is released. Prime valve leaking.
Page 11 Problem (If check is OK, go to next check) Motor runs and pump strokes Motor runs but pump does not stroke Motor is hot and runs intermittently Low air output at gun 311911C What To Check Prime Valve Open. Paint supply. Intake strainer clogged.
Page 12 Troubleshooting Problem (If check is OK, go to next check) Low air output at gun Air compressor does not run Poor air spray pattern Water in pattern What To Check Damaged (leaking) air supply hose. Air intake filter clogged. Mechanical air unloader stuck open. Replace mechanical air unloader. Electrical air unloader stuck open.
Page 13: Displacement Pump Replacement
Displacement Pump Replacement See manual 309250 for pump repair instructions. Removal 1. Relieve pressure, page 7. Unplug sprayer from out- let. 2. Loosen two screws (30) and rotate cover (44). 3. Loosen nut (A) and remove suction hose (35). Loosen nut (B) and remove the high pressure hose (14).
Page 14 Displacement Pump Replacement Installation 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 If the pump jam nut loosens during operation, the threads of the drive housing will be damaged.
Page 15: Drive Housing Replacement
Drive Housing Replacement Removal 1. Relieve pressure, page 7. 2. Remove pump (9). Displacement Pump Replace- ment, page 13. 3. Disconnect power cord from outlet. ti9268a 4. Remove two screws (30) and cover (32). 5. Remove four screws (6). 6. Pull drive housing (5) out of motor front endbell. 7.
Page 16: Spin Test
Spin Test Spin Test See Wiring Diagram, page 36. To check armature, motor winding and brush electrical continuity: 1. Relieve pressure, page 7. Disconnect power cord from outlet. 2. Remove two screws (30) and shroud (29). 3. Remove drive housing (5), page 15. 4.
Page 17: Fan Replacement
Fan Replacement FinishPro 390 Removal 1. Relieve pressure, page 7. Disconnect power cord from outlet. 2. Remove two screws (30) and shroud (29). FinishPro 395 1. Relieve pressure, page 7. Disconnect power cord from outlet. 2. Remove four screws (12) and shroud (23). 3.
Page 18: Motor Brush Replacement
Motor Brush Replacement Motor Brush Replacement See Wiring Diagram, page 36. FinishPro 390 Removal Replace brushes worn to less than 1/4 in. (6mm). Brushes wear differently on each side of motor, check both sides. 1. Relieve pressure, page 7. Disconnect power cord from outlet.
Page 19 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.
Page 20: Control Board Replacement
Control Board Replacement Control Board Replacement See Wiring Diagram, page 36. FinishPro 390 Removal 1. Relieve pressure, page 7. Disconnect power cord from outlet. 2. Remove two screws (30) and shroud (29) (see illus- tration, page16). 3. Disconnect pressure switch connector (A) from con- trol board (33).
Page 21 Installation 1. Position grommet and power cord wires through strain relief in control board (33). Grommet ti6122a 2. Connect the power cord connectors to the correct terminals indicated on the control board (120V, black and white, 240V, blue and brown) on control board (33).
Page 22 Control Board Replacement FinishPro 395 See Wiring Diagram, page 36. Removal 1. Relieve pressure, page 7. Disconnect power cord from outlet. 2. Remove four screws (12) and cover (50). 3. Disconnect all leads to motor control board (49). 4. Remove screws (6) and motor control board. To Compressor To Power Plug Installation...
Page 23: On/Off Switch Replacement
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.
Page 24 On/Off Switch Replacement FinishPro 390 Removal 1. Relieve pressure, page 7. 2. Remove four screws (12) and switch box cover (50). Note: Tag wires before removing to ensure wires are identifiable when assembling. 3. Disconnect three wires (A) from ON/OFF switch (58). 4.
Page 25: Fuse Replacement
Fuse Replacement FinishPro 390 only Removal 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 311911C 3. Remove fuse from control board. 4. Remove spare fuse from motor. Installation 1.
Page 26 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 Kit 288724. FinishPro 395: a.
Page 27 Compressor Replacement and Repair • To repair compressor, use Compressor Service Kit 288723. Refer to Thomas Compressor manual provided. • Replace compressor piston assembly, use Kit 288723. Removing Compressor from Sprayer 1. Relieve pressure, page 7. Disconnect power cord from outlet. 2.
Page 28 Pressure Control Replacement: 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 16). 3. Disconnect pressure switch connector (A) from con- trol board (33).
Page 29 Motor Control Board Diagnostics: FinishPro 395 CAUTION Do not allow sprayer to develop fluid pressure without transducer installed. Leave drain valve open if test transducer is used. LED Blinks Sprayer Operation Once Sprayer runs Two times repeatedly Sprayer shuts down and LED continues to blink two times repeatedly Three times repeatedly Sprayer shuts down and...
Page 30 Pressure Control Replacement: FinishPro 390 Digital Display Messages: FinishPro 395 Display Sprayer Operation No Display Sprayer stops. Power is not applied. Sprayer may be pressurized. 3000 psi Sprayer is pressurized. Power is applied. 210 bar (Pressure varies with tip size and pressure 21 MPa control setting.) E=02...
Page 31 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.
Page 32: Drain Valve Replacement
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).
Page 33 Drain Line Removal/Replacement FinishPro 390 Removal To remove the drain line (40) from the manifold: 1. Cut drain 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.
Page 34: Motor Replacement
Motor Replacement Motor Replacement See Wiring Diagram, page 36. CAUTION Do not drop gear cluster (3) and (2) when removing drive housing (5). Gear cluster may stay engaged in motor frontend bell or drive housing. FinishPro 390 Removal 1. Relieve pressure, page 7. Disconnect power cord from outlet.
Page 35 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.
Page 36: Wiring Diagram
Wiring Diagram Wiring Diagram FinishPro 395 120 Vac FinishPro 390 120 Vac From Motor 2X Yellow Pressure Control Assembly White Power Plug Red (+) Bl ck (-) Replaceable Fuse Capacitor Black Green ti9741a ON/OFF Switch To Compressor ti9722a 311911C...
Page 37 FinishPro 390 240 Vac From Motor Capacitor 2X Yellow Power Plug 311911C Pressure Control Assembly Red (+) Bl ck (-) Replaceable Fuse Wiring Diagram ON/OFF Switch To Compressor...
Page 38 Wiring Diagram Notes 311911C...
Page 39: Technical Data
FinishPro 390 Models Power requirements 120 Vac, 50/60 Hz, 15A, 1 phase Max tip size 0.020 Max material output .43 gpm (1.6 lpm) gpm (lpm) Maximum material pres- 2600 psi (180 bar) sure - Airless Maximum material pres- 2600 psi (180 bar) sure - AA Atomizing air output 3.2 cfm...
Page 40: Warranty
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.

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Graco FinishPro 311911C Repair Manual

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