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Resumen del manual
7. Test the gun resistance as instructed on page 20. Power Supply Adjustment The KV HI/LO switch, on the back of the gun manifold, enables you to switch between full voltage and a lower voltage output. The lower voltage is factory set at 60 kV, but can be adjusted. The power supply may be equipped with either a potentiometer or a two position jumper pin. If you have the jumper pin style, place the pin in either the 45 kV or 60 kV position. If you have the potentiometer style, follow the directions below. To adjust the low voltage setting, use a small blade end screw driver to turn the potentiometer (G), clockwise to increase the voltage or counterclockwise to decrease the voltage; fully clockwise is 80 kV, fully counterclockwise is 45 kV. Service Turbine Alternator Removal and Replacement NOTE: Replace turbine bearings after 2000 hours of operation. See your authorized Graco representative. 1. Prepare the gun for service as instructed on page 22. 2. Remove the power supply from the gun handle as instructed on page 27. 3. Squeeze the two ends of the retaining ring (35) together and carefully pull the alternator (37) away from the power supply (18) until the 3-wire connector (F) disengages. See Fig. 18, page 27. 4. Use an ohmmeter to test the turbine alternator coil. Measure the resistance between the two outer terminals of the 3-wire connector (F). The resistance should be 3 to 5 ohms. If the reading varies from this value, replace the alternator. 5. Measure the resistance between each outer terminal of the 3-wire connector and the turbine alternator housing. The resistance should be infinite. If the resistance is not infinite, replace the alternator. 6. Connect the 3-wire connector to the 3 prongs in the power supply. Push the alternator (37) onto the power supply (18) until the retaining ring (35) engages with the alternator. 7. Install the power supply in the gun handle as described on page 27. Barrel Installation 1. Be sure the gaskets (34 & 18a) and spring (30) are in place. See Fig. 13. Replace if damaged. 2. Place the barrel (3) over the power supply (18) and onto the gun handle (7). Make sure the fluid rod spring (30) is seated properly. 3. Tighten the three socket head cap screws (5) oppositely and evenly to 18 in-lbs (2 Nm) maximum (about a half turn past snug) with the wrench (63) supplied. CAUTION To avoid damaging the gun, do not over-tighten the cap screws (5). 4. Assemble the fluid tube (12) back into the fluid fitting (16). 5. Test the gun resistance as instructed on page 20. 18a 3 34 30 18 5 7 14 12 16 . Tighten to 18 in-lbs (2 Nm) maximum (about half turn past snug), using wrench provided. Fig. 19 28 308131 Service Fan Air Adjustment Valve Repair 1. Prepare the gun for service as instructed on page 22. 2. Place a wrench on the flats of the valve housing and remove it from the handle. See Fig. 20. NOTE: The fan air valve (43) can be replaced as an assembly or as individual parts. To disassemble the fan air valve: 1. Rotate the adjustment knob (43c) counterclockwise, backing out until it stops. Remove the retaining ring (43h) and back off the KV HI-LO lever (43g) from the valve housing (43d). See Fig. 20. 2. Using a standard wrench, remove the valve housing (43d) from the gun. 3. Remove the retaining ring (43b). 4. Rotate the adjustment knob (43c) counterclockwise until it is disengaged from the valve housing threads (43d). Pull the fan valve from the housing. The KV HI-LO lever (43g) and the wave spring (43f) can be removed if necessary. 5. Clean all the parts and inspect them for wear or damage. 6. When reassembling the fan air valve (43), lubricate the o-rings (43e) and the threads on the adjustment knob (43c) with petroleum jelly. Reassemble the retaining ring. 7. Apply low strength (purple) Loctite or equivalent thread sealant to the threads of the valve housing (43d). Start the valve housing threads into the handle by turning the adjustment knob (43c). Once the threads are started, rotate the knob (43c) fully counterclockwise. Torque the valve housing (43d) to 10–12 in-lb (1.1–1.4 Nm). 8. Reposition the KV HI-LO lever (43g) back onto the valve housing (43d) in correct orientation. Reinstall the retaining ring (43h) into the groove on the valve housing. 0385A 0386A DETAIL 43 43b 43d 43c43h43e 43g 43f Lubricate o-rings (43e) and top knob threads (43c) with petroleum jelly Apply low strength (purple) Loctite or equivalent to housing (43d) threads; Torque to 10–12 in-lb (1.1–1.4 N.m) Fig. 20 308131 29 Service Fluid Adjustment Assembly Repair 1. Prepare the gun for service as instructed on page 22. 2. Using a 14 mm socket wrench, remove the fluid adjustment assembly (45). See Fig. 21. 3. Turn the stem (45a) fully clockwise and remove the sleeve stop (45e). 4. To completely disassemble the fluid adjustment assembly, the sleeve stop (45e) must be assembled back on to the stem (45a). Turn the stem until the sleeve is protruding about 0.4 inches (10 mm). 5. To remove the sleeve (45d), hold the...
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