Graco Inc 244399, 309291P important safety instructions Gun Operation Troubleshooting

Page 21

 

 

Troubleshooting

Gun Operation Troubleshooting

 

 

 

 

 

 

Problem

Cause

Solution

 

 

 

 

 

Excessive spray fog.

Atomizing air pressure too high.

Close restrictor valve some, or

 

 

 

decrease air pressure as low as pos-

 

 

 

sible; minimum 40 psi (0.28 MPa, 2.8

 

 

 

bar) needed at gun for full voltage.

 

 

 

 

 

 

Fluid too thin.

Increase viscosity.

 

 

 

 

 

“Orange Peel” finish.

Atomizing air pressure too low.

Open atomizing air valve more or

 

 

 

increase gun air inlet pressure; use

 

 

 

lowest air pressure necessary.

 

 

 

 

 

 

Poorly mixed or filtered fluid.

Remix or refilter fluid.

 

 

 

 

 

 

Fluid too thick.

Reduce viscosity.

 

 

 

 

 

Fluid leaks from the fluid packing

Worn packings or rod.

Replace packings or rod; see page

 

area

 

28.

 

 

 

 

 

Air leaks from the front of the gun

Air valve (21) is not seating properly.

Clean and service air valve; see

 

 

 

page 33.

 

 

 

 

 

Fluid leakage from the front of the

Worn or damaged packing rod (26).

Replace; see page 28

 

gun

 

 

 

 

 

 

 

 

Worn fluid seat.

Replace fluid nozzle and/or electrode

 

 

 

needle; see pages 25 to 26.

 

 

 

 

 

 

Loose fluid nozzle (7).

Tighten; see page 25.

 

 

 

 

 

 

Damaged nozzle o-ring (7b).

Replace; see page 25.

 

 

 

 

 

Gun does not spray

Low fluid supply.

Add fluid if necessary.

 

 

 

 

 

 

Damaged air cap (9).

Replace; see page 25.

 

 

 

 

 

 

Dirty or clogged fluid nozzle (7).

Clean; see page 25.

 

 

 

 

 

 

Damaged fluid nozzle (7).

Replace; see page 25.

 

 

 

 

 

 

Damaged fluid adjustment valve (25).

Replace; see page 33.

 

 

 

 

 

Dirty air cap

Misaligned air cap (9) and fluid noz-

Clean fluid buildup off air cap and

 

 

zle (7).

fluid nozzle seat; see page 25.

 

 

 

 

 

309291P

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Contents II 2 G EEx 0.24 mJ PRO Xs2 Air Spray GunModel Information Table of ContentsToxic Fluid Hazard Fire, Explosion, and Electric Shock HazardPressurized Equipment Hazard Equipment Misuse HazardIntroduction How the Electrostatic Spray Gun WorksGun Overview Install the System InstallationVentilate the Spray Booth Flammable or Toxic Vapor HazardKey Typical InstallationConnect the Exhaust Tube Connect the Air LineElectric Shock Hazard Supply HoseOrifice Size Select a Fluid Nozzle and Air CapFilter the Fluid Connect the Fluid LineGrounding Check Gun Grounding Check Electrical GroundingCheck Fluid Viscosity Check Fluid ResistivityOperation Flush the Spray Gun MaintenanceTi1288a Test Gun Resistance Electrical TestsTest Power Supply Resistance Test Power Supply ResistanceElectrode Test Electrode ResistanceTroubleshooting Spray Pattern TroubleshootingProblem Cause Solution Gun Operation Troubleshooting See Test Gun Resistance on Electrical TroubleshootingSee Check Electrical Grounding on 12 and Test Gun ResistanceRepair Pressure Relief ProcedurePrepare the Gun for Service Air Cap/Nozzle Replacement Air Cap/Nozzle ReplacementElectrode Replacement Electrode ReplacementFluid Packing Removal Fluid Packing RemovalPacking Rod Packing Rod RepairBarrel Removal Barrel InstallationPower Supply Power Supply Removal and ReplacementTurbine Alternator Removal and Replacement Fan Air Adjustment Valve Fan Air Adjustment Valve RepairAir Valve Repair Fluid Adjustment Valve RepairAtomizing Air Valve Atomizing Air Restrictor Valve Removal and ReplacementES ON/OFF Valve ES ON/OFF Valve RepairPart No 20 kV Electrostatic Gun, Series C PartsRef. No Alternator Qty Part No. Description Part No. DescriptionAccessories Air Line AccessoriesFluid Line Accessories Miscellaneous Accessories Gun AccessoriesCategory Data Technical DataGraco Information Graco Standard Warranty

309291P, 244399 specifications

Graco Inc, a leading manufacturer in fluid handling systems and products, is known for its innovative solutions in various industries including automotive, construction, and industrial manufacturing. Among its compelling offerings are the models 244399 and 309291P, which represent the pinnacle of Graco's engineering prowess and customer-focused design.

The Graco 244399 is a robust fluid-handling pump designed specifically for transferring and dispensing a variety of fluids. Crafted with durability in mind, it features an air-operated diaphragm pump mechanism that ensures consistent performance in demanding environments. Its design incorporates a lightweight composite structure, making it easy to transport and install. The pump is capable of handling a wide range of fluids, including paints, coatings, and chemicals, making it versatile for different applications.

One of the standout features of the 244399 is its adjustable flow rate, allowing operators to customize the output based on specific project requirements. The self-priming capability enhances its usability, ensuring that it can effectively siphon fluids from containers without the need for additional equipment. The rugged construction provides resistance against wear and tear, further extending the lifespan of the pump.

On the other hand, the Graco 309291P is recognized for its advanced technology in spray gun performance. This model boasts a lightweight design and is engineered to reduce operator fatigue during prolonged use. The 309291P includes a patented tip technology that optimizes spray patterns and improves transfer efficiency, allowing users to achieve a smoother, more consistent finish. It is compatible with a variety of materials, from stains to thicker coatings, demonstrating its flexibility to meet varying user needs.

Both models incorporate Graco’s commitment to safety, featuring integrated pressure relief mechanisms that enhance operator protection. Furthermore, they are designed for easy maintenance, with user-friendly access points for routine inspections and part replacements.

In conclusion, Graco Inc’s 244399 and 309291P highlight the company’s dedication to providing high-quality, innovative solutions for fluid handling and application. With their superior features, advanced technologies, and user-centric designs, these models continue to set standards in performance and reliability across various industries.
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