Troubleshooting

Troubleshooting

Problem WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

1.Relieve the pressure.

2.Check all possible problems and solutions before disassembling pump.

Problem

Cause

Solution

 

 

 

Pump fails to operate.

Restricted line or inadequate air

Clear; increase air supply.

 

supply.

 

 

 

 

 

Insufficient air pressure; closed or

Open; clean (be sure to use air fil-

 

clogged air valves, etc.

ter).

 

 

 

 

Exhausted fluid supply.

Refill; purge all air from pump and

 

 

fluid lines.

 

 

 

 

Damaged air motor.

Service air motor. See manual

 

 

307±043.

 

 

 

 

Dried fluid seizure of displacement

Clean, check or replace throat pack-

 

rod.

ings. See manual 306±981.

 

 

Always stop pump at bottom of

 

 

stroke and keep wet-cup filled with

 

 

compatible solvent.

 

 

 

Pump operates but output is low on

Restricted line or inadequate air

Clear; increase air supply.

both strokes.

supply.

 

 

 

 

 

Insufficient air pressure; closed or

Open; clean (be sure to use air

 

clogged air valves, etc.

filter).

 

 

 

 

Clogged fluid line, valves, etc.

Clear* (be sure to use fluid filter).

 

 

 

 

Packing nut is too tight.

Loosen (see page 8).

 

 

 

Pump operates but output is low on

Held open or worn intake valve.

Clear; service. See manual

downstroke.

 

306±981.

 

 

 

Pump operates but output is low on

Held open or worn fluid piston valve

Clear; service. See manual

upstroke.

or packings.

306±981.

 

 

 

Erratic or accelerated operation.

Exhausted fluid supply.

Refill; purge all air from pump and

 

 

fluid lines.

 

 

 

 

Held open or worn intake valve.

Clear; service. See manual

 

 

306±981.

 

 

 

*To determine if the fluid hose or gun is obstructed, relieve the pressure and disconnect the fluid hose, and place a container at the pump fluid outlet to catch any fluid. Turn on the air just enough to start the pump; about 1.4 to 2.8 bar (0.14 to 0.28 MPa, 20 to 40 psi). If the pump starts when the air is turned on, the obstruction is in the fluid hose or gun.

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Graco Series A, 239-327 manual Troubleshooting, Problem, Cause, Solution
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239-327, Series A specifications

Graco is a renowned manufacturer known for its high-quality spray equipment and pumps, catering to both professionals and DIY enthusiasts. Their diverse lineup includes advanced models such as Series A, Series C, Model 237069, Model 289310, and Model 238620, each uniquely engineered to meet various painting and coating applications.

The Graco Series A is an outstanding choice for smaller projects. Its lightweight design and portability make it ideal for residential touch-ups, woodworking, and other small-scale applications. This series boasts a simple setup with an easy-to-use spray gun that enables users to achieve a smooth, even finish. Equipped with Graco’s ProConnect technology, Series A allows for quick pump replacement without any tools, ensuring minimal downtime during projects.

The Graco Series C offers enhanced performance and greater versatility for larger applications. This series is designed for professional contractors and serious DIYers, featuring robust construction and advanced technology. With a higher flow rate and pressure capabilities, Series C can handle more demanding projects such as residential and commercial buildings. Additionally, it incorporates SmartControl technology, electronically controlling pressure to provide consistent spray patterns regardless of the fluid being used.

Model 237069 is another exceptional option known for its compact design and efficiency. This electric airless sprayer is perfect for various interior and exterior applications, standing out due to its ease of operation. It features a reversible spray tip, allowing users to quickly clear clogs, and the adjustable pressure settings provide flexibility for different surface textures. Model 237069 is engineered for durability, making it a reliable choice for frequent use.

Model 289310 is engineered for professionals who prioritize speed and precision. This heavy-duty sprayer is equipped with an advanced hydraulic system, which ensures a consistent flow of material. Its larger hopper capacity minimizes the need for frequent refills, allowing users to complete extensive projects faster. Furthermore, the model includes an ergonomic design that reduces fatigue, empowering operators to work longer with comfort.

Lastly, Model 238620 exemplifies Graco’s commitment to innovation in airless technology. This model features an integrated digital display that offers real-time feedback and monitoring, enhancing overall user experience. With its streamlined pump design and advanced filter system, Model 238620 is capable of handling a wide range of coatings, from thin stains to thick latex paints.

In conclusion, Graco's Series A, Series C, Model 237069, Model 289310, and Model 238620 represent the brand’s dedication to quality, performance, and user-friendliness. These models cater to various project sizes and requirements, making them valuable assets for both amateurs and seasoned professionals in the painting industry.
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