Graco 247936, 247937 Remove and Replace Turbine Alternator, Repair Fan Air Adjustment Valve

Page 33

Remove and Replace Turbine Alternator

Replace turbine alternator bearings after 2000 hours of operation. Order Part No. 223688 Bearing Kit.

1.Prepare gun for repair, page 27.

2.Remove the power supply/alternator assembly, page 32.

3.Disconnect the alternator from the power supply, page 32.

4.Measure resistance between the two outer termi- nals of the 3-wire connector (GG); it should be

2.5-3.5 ohms. If outside this range, replace the alter- nator coil.

5.Follow the bearing replacement procedure in the bearing kit manual 308034.

6.Install the alternator on the power supply, page 32.

7.Install the power supply/alternator assembly, page 32.

Gun Repair

Repair Fan Air Adjustment Valve

1.Prepare the gun for service, page 27.

2.Place a wrench on the flats of 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-lubricate.

7.When reassembling the fan air valve (20), lightly lubricate the valve threads and screw the stem (20d) fully into the housing (20c) until bottomed. Install the o-ring (20b*), lubricate, and unscrew the valve stem until the o-ring enters the housing.

8.Reassemble the retaining ring (20a). Unscrew the valve stem from the housing until it is stopped by the retaining ring.

9.Screw the valve assembly (20) into the gun handle, using a wrench on the flats of the housing. Torque to 15-25 in-lb (1.7-2.8 N•m).

20d

TI1487A

20b*

20c

20a

Fig. 19. Fan Air Adjustment Valve

312900G

33

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Contents II 2 G EEx 0.24 mJ PRO Xs Waterborne Air Spray GunTable of Contents FIRE, EXPLOSION, and Electric Shock Hazard Equipment Misuse Hazard How the Electrostatic Air Spray Gun Works OverviewSmart Model 247937 Standard Model 247936Air swivel inlet. Left-hand thread Fan air adjustment valve. Adjusts fan size ES indicator 247936 only. Green when ES is on Installation Install the SystemVentilate the Spray Booth Typical Installation Key Connect the Air Line Connect the Charging ProbeGrounded Air Supply Hose Connect the Exhaust Tube Connect the Fluid LineFilter the Fluid Orifice Size Select a Fluid Nozzle and Air CapFire, Explosion, and Electric Shock Hazard GroundingCheck Fluid Resistivity Check Electrical GroundingPrepare to Paint Check Fluid ViscosityTurn ES ON/OFF switch on Flush Pressure Relief ShutdownPressurized Equipment Hazard Clean Gun Daily MaintenanceDaily System Care Electric Shock Hazard Electrical TroubleshootingSee Test Total Gun Resistance on See Check Electrical Grounding onTest Gun Resistance Electrical TestsTest Total Gun Resistance Test Charging Probe ResistanceTest Barrel Resistance Test Power Supply ResistanceSpray Pattern Troubleshooting Gun Operation Troubleshooting Prepare the Gun for Repair Gun RepairReplace Fluid Needle Replace Air Cap/NozzleRemove Fluid Packing Remove Fluid PackingPacking Rod Repair Packing RodRemove Barrel Install BarrelPower Supply Remove and Replace Power SupplyRemove and Replace Turbine Alternator Repair Fan Air Adjustment ValveRepair Air Valve Repair Fluid Adjustment ValveRepair ES ON/OFF Valve Remove and Replace Atomizing Air Restrictor ValveParts Part No 60 kV Electrostatic Gun, Series a Standard modelRef. No Multi-tool Part No 60 kV Electrostatic Gun, Series a Smart model Ref. No Packing Rod Ref. No Alternator Ref. No Fan Adjustment ValveRef. No ES ON/OFF Valve Smart Model controlsDescription Qty Description Qty Accessories Air Line AccessoriesFluid Line Accessories Miscellaneous Accessories Gun AccessoriesCategory Data Technical DataGraco Information Graco Warranty
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