Troubleshooting

PROBLEM

CAUSE

SOLUTION

Fluid in exhaust air.

Diaphragm ruptured.

Replace. See pages 19–22.

 

 

 

 

Loose fluid side diaphragm plate

Tighten or replace. See pages

 

(105).

19–22.

 

 

 

Pump exhausts excessive air at

Worn air valve block (7), o-ring (6),

Inspect; replace. See pages 16–17.

stall.

plate (8), pilot block (18), u-cups

 

 

(10), or pilot pin o-rings (17).

 

 

 

 

 

Worn shaft seals (402).

Replace. See pages 19–22.

 

 

 

Pump leaks air externally.

Air valve cover (2) or air valve cover

Tighten screws. See page 17.

 

screws (3) are loose.

 

 

 

 

 

Air valve gasket (4) or air cover

Inspect; replace. See pages 16–17,

 

gasket (22) is damaged.

23–24.

 

 

 

 

Air cover screws (25) are loose.

Tighten screws. See pages 23–24.

 

 

 

Pump leaks fluid externally from ball

Loose manifolds (102, 103), dam-

Tighten manifold bolts (106 and

check valves.

aged seal between manifold and

112) or replace seats (201) or

 

seat (201), damaged o-rings (202).

o-rings (202). See page 18.

 

 

 

308550 15

Page 15
Image 15
Graco 308550ZAC important safety instructions Troubleshooting

308550ZAC specifications

The Graco 308550ZAC is a versatile and efficient airless paint sprayer designed for both DIY enthusiasts and professional contractors. Known for its reliability and performance, this unit provides consumers with a powerful solution for their painting projects, ensuring a smooth and even finish.

One of the standout features of the Graco 308550ZAC is its ProXChange technology. This innovative system allows for quick and easy pump replacement without the need for additional tools or complex procedures. This feature ensures minimal downtime, making it especially valuable on job sites where time efficiency is crucial.

The sprayer is also equipped with a powerful electric motor that delivers a consistent pressure of up to 3000 PSI. This high pressure not only facilitates a fine atomization of paint but also enables users to work with a variety of coatings, including thicker materials like latex, stains, and sealers. As a result, users can achieve professional-grade finishes on a range of surfaces, from buildings to fences.

Another significant characteristic of the Graco 308550ZAC is its adjustable pressure control. This feature allows operators to fine-tune the pressure according to the specific paint being used and the project's requirements. This flexibility translates to improved control over the spraying process, minimizing overspray and ensuring precision, particularly when working on detailed areas.

Additionally, the unit comes with a built-in suction hose, which can be submerged directly into paint containers for efficient and seamless painting. This capability makes it easier to use large buckets, reducing the hassle of constantly refilling the sprayer and enhancing productivity.

The Graco 308550ZAC also features a lightweight and portable design, making it easier to transport between job sites. Its robust construction ensures durability, while the ergonomic handle offers comfort during extended use.

In summary, the Graco 308550ZAC is a robust airless paint sprayer that combines advanced technologies and thoughtful design features to meet the needs of both professionals and hobbyists. With its ProXChange system, adjustable pressure control, and high-performance motor, it represents an excellent choice for achieving flawless finishes in various painting applications.