Graco Inc 309291P Electrical Troubleshooting, See Test Gun Resistance on, and Test Gun Resistance

Page 22

Troubleshooting

Electrical Troubleshooting

Problem

Cause

Solution

 

 

 

Poor wrap.

ES ON/OFF valve OFF (0).*

Turn ON (I).

 

 

 

 

Gun air pressure too low.

Check air pressure to gun; minimum

 

 

40 psi (0.28 MPa, 2.8 bar) needed at

 

 

gun for full voltage.

 

 

 

 

Atomizing air pressure too high.

Decrease.

 

 

 

 

Fluid pressure too high.

Decrease.

 

 

 

 

Incorrect distance from gun to part.

Should be 8-12 in. (200-300 mm).

 

 

 

 

Poorly grounded parts.

Resistance must be 1 megohm or

 

 

less. Clean workpiece hangers.

 

 

 

 

Faulty gun resistance.

See Test Gun Resistance on page

 

 

17.

 

 

 

 

Low fluid resistivity.

Check fluid resistivity, page 13.

 

 

 

 

Fluid leaks from the packing (26d)

Clean the packing rod cavity.

 

and causes a short.

Replace the packing rod. See page

 

 

28.

 

 

 

 

Faulty turbine alternator.

Be sure the plug is in place on the

 

 

back of the turbine alternator hous-

 

 

ing. Remove and test the turbine

 

 

alternator. See page 31.

 

 

 

ES indicator or voltage/current dis-

ES ON/OFF valve OFF (0).*

Turn ON (I).

play is not lit.

 

 

 

 

 

 

No power.

Replace power supply. See page 30.

 

 

 

Operator gets mild shock.

Operator not grounded or is near

See Grounding on page 11.

 

ungrounded object.

 

 

 

 

 

Gun not grounded.

See Check Electrical Grounding on

 

 

page 12 and Test Gun Resistance

 

 

on page 17.

 

 

 

Operator gets shock from workpiece.

Workpiece not grounded.

Resistance must be 1 megohm or

 

 

less. Clean workpiece hangers.

 

 

 

* ES indicator light is off when the gun is triggered.

22

309291P

Image 22
Contents PRO Xs2 Air Spray Gun II 2 G EEx 0.24 mJTable of Contents Model InformationFire, Explosion, and Electric Shock Hazard Toxic Fluid HazardEquipment Misuse Hazard Pressurized Equipment HazardHow the Electrostatic Spray Gun Works IntroductionGun Overview Ventilate the Spray Booth InstallationInstall the System Flammable or Toxic Vapor HazardTypical Installation KeyElectric Shock Hazard Connect the Air LineConnect the Exhaust Tube Supply HoseSelect a Fluid Nozzle and Air Cap Orifice SizeConnect the Fluid Line Filter the FluidGrounding Check Electrical Grounding Check Gun GroundingCheck Fluid Resistivity Check Fluid ViscosityOperation Maintenance Flush the Spray GunTi1288a Electrical Tests Test Gun ResistanceTest Power Supply Resistance Test Power Supply ResistanceTest Electrode Resistance ElectrodeSpray Pattern Troubleshooting TroubleshootingProblem Cause Solution Gun Operation Troubleshooting See Check Electrical Grounding on Electrical TroubleshootingSee Test Gun Resistance on 12 and Test Gun ResistancePressure Relief Procedure RepairPrepare the Gun for Service Air Cap/Nozzle Replacement Air Cap/Nozzle ReplacementElectrode Replacement Electrode ReplacementFluid Packing Removal Fluid Packing RemovalPacking Rod Repair Packing RodBarrel Installation Barrel RemovalPower Supply Removal and Replacement Power SupplyTurbine Alternator Removal and Replacement Fan Air Adjustment Valve Repair Fan Air Adjustment ValveFluid Adjustment Valve Repair Air Valve RepairAtomizing Air Restrictor Valve Removal and Replacement Atomizing Air ValveES ON/OFF Valve Repair ES ON/OFF ValveParts Part No 20 kV Electrostatic Gun, Series CRef. No Alternator Part No. Description Qty Part No. DescriptionAir Line Accessories AccessoriesFluid Line Accessories Gun Accessories Miscellaneous AccessoriesTechnical Data Category DataGraco Standard Warranty Graco Information

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.