Graco Inc 235893, 4600SC, 308-084 manual GUN Operation Troubleshooting Chart, Problem Cause Solution

Page 14

GUN OPERATION TROUBLESHOOTING CHART

PROBLEM

CAUSE

 

SOLUTION

Leakage from fluid

Worn fluid rod packings or fluid rod

Replace fluid rod packings or rod.

packing area

 

 

See page 23.

Fluid leakage from front

Fluid rod worn or damaged

Replace fluid rod. See page 23.

of gun

Worn fluid seat

 

Replace fluid nozzle and/or

 

 

 

 

 

electrode. See page 19 and 20.

 

Piston seal or o-ring damaged

Replace seal and/or o-ring and

 

 

 

lubricate.

 

Loose resistor stud

 

Tighten resistor stud. See page 19.

 

Loose fluid nozzle

 

Tighten fluid nozzle. See page 19.

 

Damaged resistor stud o-ring

Replace o-ring. See page 19.

“Orange Peel” finish

Insufficient air pressure

Increase air pressure, use least air

 

 

 

pressure needed for good results.

 

Fluid poorly mixed or filtered

Remix or refilter fluid.

 

Improper thinner being used

Use proper thinner.

Excessive spray fog

Too much air pressure

 

Reduce air pressure, use least air

 

 

 

pressure needed for good results.

 

Fluid thinned too much

Properly thin fluid.

No fluid sprays from gun

Fluid low

 

Check, add fluid if necessary.

 

Damaged air cap

 

Replace air cap.

 

Dirty or clogged fluid nozzle

Clean fluid nozzle. See page 11.

 

Damaged fluid nozzle

 

Replace fluid nozzle. See page 19.

 

Piston not actuating

 

Check cylinder (CYL) air.

 

Actuator arm out of position

Check actuator arm (29) and

 

 

 

nuts (25, 7). See page 21.

Equipment covered

Exhaust air flow insufficient

Check for proper CFM; check

with fluid

or not directed properly

baffles and direction of air flow.

 

Improper distance between gun

Adjust spraying distance to

 

and workpiece

 

8 to 12 inches (203 to 305 mm).

Dirty air cap

Misalignment between air cap

Remove and clean air cap and fluid

 

and fluid nozzle

 

nozzle. See page 11. Then reinstall

 

Air Cap

 

them.

 

 

Or replace fluid nozzle and air cap.

 

 

 

 

 

 

See page 19.

 

Fluid Nozzle

 

 

 

ALIGNED

MISALIGNED

 

1￿ ￿￿￿￿￿￿￿

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Contents Part No -894, Series a Part No -224, Series a Air Spray Gun, without shroudPart No -893, Series a Part No -094 Series a Gun ManifoldHazardous Fluid Hazard Hose SafetyEquipment Misuse Hazard FIRE, EXPLOSION, or Electrostatic Shock Hazard Flushing and Cleaning SafetyVentilate the Spray Booth GroundingTable of Contents System Options Typical InstallationInstalling the System Spraying Voltage MonitorInstall the Gun Mounting Bracket InstallationVentilate the Spray Booth Install the Gun and Manifold See FigAccessories section Air Cap/Air Cap NutInstall the Fabric Cover See Fig Check the Electrical Grounding See FigOperation Operating ChecklistAdjusting the Spray Pattern Selecting a Fluid Nozzle and Air Cap Gun FunctionsDaily Care and Cleaning MaintenanceAdjusting the Turbine Air Pressure Activating the Voltage Select KV HI/LOClean the Air Cap and Fluid Nozzle Follow the Pressure Relief Procedure Warning onCheck for signs of fluid leakage where indicated by arrows Check for Fluid Leakage See FigSpray Pattern Troubleshooting Chart Problem Cause Solution Improper Spray PatternGUN Operation Troubleshooting Chart Problem Cause SolutionElectrical Troubleshooting Chart See Check the Electrical GroundingTest Gun Resistance See Fig Test Power Supply Resistance See FigElectrical Tests 40dAir Cap/Nozzle/Resistor Stud Replacement Test Resistor Stud ResistanceFlush the Gun and Relieve Pressure ServiceService Notes Air Cap/Nozzle/Resistor Stud Replacement To install the resistor studElectrode Replacement Barrel Removal Barrel Installation Fluid Packing Rod Removal and Repair   Turbine Alternator Removal Replacement Power Supply Removal and ReplacementPower Supply Adjustment 40cSpray GUN Service Notes Manifold Service Notes Spray GUN Parts Drawing Detail aSpray GUN Parts List Part No -893, Series a Air Spray Gun, with standard shroudManifold Parts List Manifold Parts DrawingPRO 4600HC Conversion KIT Installing the PRO 4600HC Conversion KitSure Relief Procedure on Accessories Mount Extensions 224-255/259 Gun Mount AssemblyVolt Power Supply Nylon Fabric CoverFiber Optic Cables Bulkhead ConnectorGrounding Clamp and Wire MegohmmeterTechnical Data Manual Change SummaryMINNEAPOLIS, MN Graco Warranty and DisclaimersGraco Phone Numbers

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

Graco Inc. is a renowned company in the manufacturing of fluid handling systems and products, particularly focusing on industrial, automotive, and contractors' markets. Among its extensive range of offerings are specific models that have garnered attention for their performance and reliability. This article highlights several Graco product numbers, including 224-224, 235893, 235-894, 224-094, and 4600SC.

The model 224-224 is recognized for its versatile usage in paint applications, capable of accommodating various material types. It is equipped with Graco's innovative technology that ensures consistent and precise fluid delivery, making it ideal for both professional contractors and DIY enthusiasts. The device often includes features like a lightweight structure for easy maneuverability and an ergonomic design for enhanced user comfort.

Moving to the model 235893, it presents impressive durability and optimal performance in high-pressure scenarios. This model is particularly popular among heavy-duty applications, thanks to its ability to withstand the rigors of demanding environments. With advanced component engineering, the 235893 ensures minimal downtime and enhances efficiency, making it a go-to choice for professionals in need of reliability under pressure.

The 235-894 model stands out due to its unique pump design that optimizes material flow and reduces overspray. This characteristic is crucial for achieving professional-grade finishes with reduced waste, saving both time and resources. Additionally, its user-friendly interface allows operators to adjust settings easily, catering to varied application needs.

Next, the 224-094 model is tailored for precision and versatility, featuring a compact design suitable for tighter spaces. It is engineered for efficiency, allowing for rapid color changes without compromising performance. The advanced filtration system integrated within this model ensures that contaminants are minimized, safeguarding the integrity of the materials being used.

Lastly, the 4600SC model exemplifies Graco’s commitment to innovation, specifically tailored for airless spray applications. It is equipped with cutting-edge technology that maximizes control over pressure and flow rate, allowing for seamless operation in different environments. The model’s ability to adapt to various paints and coatings while providing a superior finish adds to its appeal.

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.