Graco 3A2495C important safety instructions Power Supply Removal and Replacement

Page 45

Repair

Power Supply Removal and Replacement

•Inspect the gun handle power supply cavity for dirt or moisture. Clean with a clean, dry rag.

•Do not expose gasket (5) to solvents.

1.See Prepare the Gun for Service, page 39.

2.See Gun Barrel Removal, page 43.

(EE)make contact with the handle. On Smart models, align the connector of the 6–pin ﬂexible circuit (40) with the socket (CS) at the top of the handle. Push the connector securely into the socket as you slide the power supply/alternator assembly into the handle.

NOTICE

Be careful when handling the power supply

(11)to avoid damaging it.

3.Grasp the power supply (11) with your hand. With a gentle side to side motion, free the power supply/alternator assembly from the gun handle (16), then carefully pull it straight out. On Smart Models only, disconnect the ﬂexible circuit (40) from the socket at the top of the handle.

4.Inspect the power supply and alternator for damage.

5.To separate the power supply (11) from the alternator (15), disconnect the 3-wire ribbon connector (PC) from the power supply. On Smart Models only, disconnect the 6–pin ﬂexible circuit

(40)from the power supply. Slide the alternator up and off the power supply.

6.See Test Power Supply Resistance, page 33. Replace the power supply if necessary.

To repair the alternator, see

Alternator Removal and Replacement, page 46.

7.Smart models only: connect the 6–pin ﬂexible circuit (40) to the power supply.

To prevent damage to the cable and possible interruption of the ground continuity, bend the alternator’s 3–wire ribbon cable (PC) upward and back, so the bend faces the power supply and the connector is at the top.

8.Connect the 3-wire ribbon connector (PC) to the power supply. Tuck the ribbon forward, under the power supply. Slide the alternator (15) down onto the power supply (11).

9.Insert the power supply/alternator assembly in the gun handle (16). Make sure the ground strips

Figure 32 Connect Flexible Circuit

10.Make sure the gasket (5*), ground spring (37a), and power supply spring (11a) are in place. Assemble the barrel (1) to the handle (16). See Gun Barrel Installation, page 43.

11.See Test Gun Resistance, page 32.

Figure 33 Power Supply

3A2495C

45

Image 45

Contents Instructions Important Safety InstructionsContents II 2 G Smart Display Standard DisplayFIRE, EXPLOSION, and Electric Shock Hazard Skin Injection Hazard Equipment Misuse Hazard How the Electrostatic AA Spray Gun Works Gun OverviewSetup Checklist, Chart, page 62, for availDescription Purpose See Spray Tip SelectionSmart Guns Operating Mode Bar GraphError Display Key for Figs Description Purpose Description Purpose Diagnostic Mode Alternator Speed Hertz Screen Ventilate the Spray Booth InstallationAir Supply Line Fluid Supply LineHose NON-HAZARDOUS Area Typical Installation Key DescriptionGun Setup Checklist Gun SetupGun Setup Pressure Drop LED Indicator Colors DescriptionGrounding Key to Figs Ground the Operator Ground the Gun Check Gun Electrical Grounding Check Fluid Resistivity Flush Before Using EquipmentCheck Fluid Viscosity Fluid Resistivity Levels Megohms-cmOperation Pressure Relief ProcedureStartup ShutdownFlushing MaintenanceClean the Gun Daily Maintenance Check Gun Electrical Grounding, Daily System CareTest Gun Resistance Electrical TestsAlternator Removal and Replacement, Test Power Supply ResistanceTest Gun Barrel Resistance Spray Pattern Troubleshooting TroubleshootingProblem Cause Solution Clean the Gun Daily,Gun Operation Troubleshooting Power Supply Removal Replacement,Replacement, page 45 Test Gun Resistance,Replacement, page 52 See Clean the Gun Daily,Repair Prepare the Gun for ServiceSee Prepare the Gun for Service, Air Cap, Spray Tip, and Fluid Seat Housing ReplacementSee Test Gun Resistance, Electrode ReplacementFluid Tube Removal and Replacement Fluid Filter ReplacementGun Barrel Removal Gun Barrel InstallationRemove Cap and Springs Fluid Needle ReplacementSee Prepare the Gun for Service, See Gun Barrel Removal, Power Supply Removal and ReplacementAlternator Removal and Replacement Alternator Fan Air Adjustment Valve Fan Air Adjustment Valve RepairAtomizing Air Adjustment Valve Repair ES On-Off Valve Repair Air Valve Repair See Gun Barrel Installation,Smart Module Smart Module ReplacementAir Inlet Fitting and Air Exhaust Valve Air Swivel and Exhaust Valve ReplacementParts Standard Air-Assisted Spray Gun AssemblyDescription Qty Smart Air-Assisted Spray Gun Assembly See Smart Module Assembly Part No N664 Alternator Assembly Alternator AssemblyPart No N632 ES On-Off Valve Assembly ES On-Off Valve AssemblyPart No N634 Fan Air Valve Assembly Fan Air Valve AssemblyAir Cap Assembly Smart Module Assembly AEM Fine Finish Spray Tips Spray Tip Selection ChartOriﬁce Fluid Output AEF Fine Finish Pre-Oriﬁce Spray TipsOz/min l/min 41 bar MPa Bar Spray TipGun Accessories Repair Kits, Related Manuals, and AccessoriesSystem Accessories Test EquipmentHoses Operator AccessoriesGun Model In. mm Weight, oz g DimensionsTechnical Data Graco Information Graco Pro Xp Warranty