Troubleshooting

PROBLEM

CAUSE

SOLUTION

 

 

 

 

 

 

A and/or B fluid in gun air section.

Damaged side seals (18c).

Replace, page 29.

 

 

 

 

Damaged mix chamber (19).

Replace, page 29.

 

 

 

 

Damaged side seal o-rings (18d,

Replace, page 29.

 

18e).

 

 

 

 

 

Tightened air cap with fluid valves

Close valves first.

 

(12b) open.

 

 

 

 

Fluid mist from mix chamber or air

Damaged side seals (18c).

Replace, page 29.

cap.

 

 

 

 

 

 

Damaged side seal o-rings (18d,

Replace, page 29.

 

18e).

 

 

 

 

 

Damaged mix chamber (19).

Replace, page 29.

 

 

 

Excessive overspray.

Too much cleanoff air.

Reduce, page 13.

 

 

 

Rapid buildup of material on air cap.

Plugged air cap holes.

Clean, page 20.

 

 

 

 

Too little cleanoff air.

Increase, page 13.

 

 

 

 

Damaged/missing fluid housing

Replace, page 29.

 

o-ring (23).

 

 

 

 

 

Damaged front o-ring (3).

Replace, page 29.

 

 

 

Reduced cleanoff air.

Damaged front o-ring (3).

Replace, page 29.

 

 

 

Excessive cleanoff air when fluid

Damaged/missing fluid housing

Replace, page 29.

valves are closed and gun is trig-

o-ring (23).

 

gered.

 

 

 

 

 

Fluid does not shut off when fluid

Damaged fluid valves (12b).

Replace.

valves are closed.

 

 

 

 

 

Burst of air from muffler when gun is

Normal.

No action required.

triggered.

 

 

 

 

 

Steady air leakage from muffler.

Damaged air valve o-rings (24).

Replace, page 33.

 

 

 

 

Damaged piston o-rings (16, 17).

Replace, page 32.

 

 

 

Air leakage from front air valve.

Damaged air valve o-rings (24).

Replace, page 33.

 

 

 

Air leak around lock ring.

Damaged o-ring (21).

Replace, page 29.

 

 

 

Cannot tighten retaining ring (9) until

Air cap (10) assembled before retain-

Install retaining ring (9) first, then air

it bottoms out.

ing ring (9).

cap (10), page 30.

 

 

 

24

309550U

Page 24
Image 24
Graco 309550U important safety instructions Problem Cause Solution

309550U specifications

The Graco 309550U is a top-of-the-line airless paint sprayer that caters to both professionals and DIY enthusiasts. With its advanced features and user-friendly design, it stands out as an essential tool for achieving a flawless finish on various painting projects.

One of the main characteristics of the Graco 309550U is its powerful motor, which delivers a high level of pressure, making it suitable for a wide range of coatings. This airless sprayer can handle everything from thin paints to thicker latex and enamels without clogging, ensuring smooth and consistent application. The unit is designed to cover large areas quickly, allowing users to complete their projects in a fraction of the time compared to traditional roller or brush methods.

Equipped with Graco's exclusive ProXChange pump technology, the 309550U allows for easy pump replacement on the job site without the need for tools. This feature enhances productivity by minimizing downtime, enabling users to keep working seamlessly. The unit also boasts an innovative suction tube that can draw paint directly from the can, eliminating the need for cumbersome pouring and mess.

Another noteworthy feature is the adjustable pressure control, which allows users to customize the spray pattern and flow rate. This adaptability ensures optimal coverage in various environments and surfaces, whether applying a fine mist for intricate details or a heavier coat for larger surfaces. The built-in filter system further enhances performance by preventing debris from entering the spray mechanism, ensuring a smooth, even finish.

The Graco 309550U is designed with portability in mind. It features a lightweight frame and durable wheels, making it easy to transport across job sites or around the house. Additionally, the sprayer comes with a convenient carry handle for added mobility. Safety features, including a trigger lock, are also implemented to prevent accidental activation, giving users peace of mind during operation.

In conclusion, the Graco 309550U airless paint sprayer is a versatile and efficient tool that combines powerful performance with user-friendly features. Its robust design, ease of use, and innovative technologies make it an ideal choice for both professional painters and homeowners looking to achieve exceptional results in their painting endeavors. Whether you're tackling an interior room, exterior surface, or detailed trim work, the Graco 309550U ensures a flawless finish every time.