Graco Inc 308-084, 4600SC manual Power Supply Removal and Replacement, Power Supply Adjustment, 40c

Page 25

SERVICE

KEY

 

40

40e

F

3-wire Connector

G

Potentiometer

 

 

10

Gun Barrel

 

40b

13

Retainer Ring

 

27

Alternator

 

G

27a

O-Ring

 

 

 

27b

Cushion

40a

 

39

Gun Body

 

40Power Supply

40a

Gasket

40c

40b

Pad

 

40c

Pad

 

40d

Seal

 

40e

Cushion

40d

13

39

F

 

 

 

27a

 

10

 

 

27b

27

0450

Fig 23

Power Supply Removal and Replacement

REPAIR NOTES:

a.To avoid a loss in electrostatic performance, inspect the gun handle’s power supply cavity for dirt or moisture. Clean the cavity with a clean, dry rag.

b.Do not expose the seal (40d) or o-ring (27a) to solvents as solvents will damage them.

1.Remove the barrel as described in Barrel Removal.

2.Grasp the power supply (40) with your hand. With a gentle side-to-side motion, being careful not to dam- age the power supply, pull the power supply free from the gun handle (39), then pull it straight out.

3.Inspect the power supply for any physical damage. Check the electrical resistance as instructed in Test Power Supply Resistance. If needed, replace the power supply.

Before installing the power supply, inspect the seal (40d) for any damage or swelling; replace if neces- sary. Also, make sure the gaskets/pads (40a–40e) are in place.

4.Lubricate the o-ring (27a) and insert the power sup- ply in the gun handle.

5.Install the barrel on the handle as described in Barrel Installation.

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 between 45 and 80 kV.

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 it; fully clockwise is 80 kV, fully counterclockwise is 45 kV.

Turbine Alternator Removal and

Replacement

NOTE: Replace turbine bearings after 2,000 hours of operation. See your authorized Graco representative.

1.Remove the power supply from the gun handle as described at left.

2.Squeeze the two ends of the retaining ring (13) together and carefully pull the alternator (27) away from the power supply (40) until the wire connector

(F) disengages. See Fig 23 .

3.Use an ohmmeter to test the turbine alternator coil. Measure the resistance between the two outer termi- nals of the 3-wire connector (F). Resistance should be 3 to 5 ohms. If the reading varies from this value, replace the alternator.

4.Connect the 3-wire connector to the 3 prongs in the power supply. Push the alternator (27) onto the pow- er supply (40) until the retaining ring (13) engages with the alternator.

5.Install the power supply in the gun handle as described at left.

308-084￿ ￿ ￿ ￿ ￿ 25

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Contents Part No -893, Series a Part No -224, Series a Air Spray Gun, without shroudPart No -894, Series a Part No -094 Series a Gun ManifoldEquipment Misuse Hazard Hose SafetyHazardous Fluid Hazard Ventilate the Spray Booth Flushing and Cleaning SafetyFIRE, EXPLOSION, or Electrostatic Shock Hazard GroundingTable of Contents Installing the System Typical InstallationSystem Options Spraying Voltage MonitorVentilate the Spray Booth InstallationInstall the Gun Mounting Bracket Install the Gun and Manifold See FigAir Cap/Air Cap Nut Accessories sectionCheck the Electrical Grounding See Fig Install the Fabric Cover See FigAdjusting the Spray Pattern Operating ChecklistOperation Selecting a Fluid Nozzle and Air Cap Gun FunctionsAdjusting the Turbine Air Pressure MaintenanceDaily Care and Cleaning Activating the Voltage Select KV HI/LOFollow the Pressure Relief Procedure Warning on Clean the Air Cap and Fluid NozzleCheck for Fluid Leakage See Fig Check for signs of fluid leakage where indicated by arrowsProblem Cause Solution Improper Spray Pattern Spray Pattern Troubleshooting ChartProblem Cause Solution GUN Operation Troubleshooting ChartSee Check the Electrical Grounding Electrical Troubleshooting ChartElectrical Tests Test Power Supply Resistance See FigTest Gun Resistance See Fig 40dTest Resistor Stud Resistance Air Cap/Nozzle/Resistor Stud ReplacementService Notes ServiceFlush the Gun and Relieve Pressure To install the resistor stud Air Cap/Nozzle/Resistor Stud ReplacementElectrode Replacement Barrel Removal Barrel Installation Fluid Packing Rod Removal and Repair   Power Supply Adjustment Power Supply Removal and ReplacementTurbine Alternator Removal Replacement 40cSpray GUN Service Notes Manifold Service Notes Detail a Spray GUN Parts DrawingPart No -893, Series a Air Spray Gun, with standard shroud Spray GUN Parts ListManifold Parts Drawing Manifold Parts ListSure Relief Procedure on Installing the PRO 4600HC Conversion KitPRO 4600HC Conversion KIT Accessories Volt Power Supply Gun Mount AssemblyMount Extensions 224-255/259 Nylon Fabric CoverGrounding Clamp and Wire Bulkhead ConnectorFiber Optic Cables MegohmmeterManual Change Summary Technical DataGraco Phone Numbers Graco Warranty and DisclaimersMINNEAPOLIS, MN

308-084, 4600SC, 224-094, 235-894, 235893 specifications

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In summary, Graco Inc. provides a range of high-performance products like the 224-224, 235893, 235-894, 224-094, and 4600SC, each with distinctive features and technologies that cater to a broad spectrum of fluid handling needs. These models reflect the company’s dedication to enhancing efficiency, durability, and user experience in fluid management across various industries.
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