Vent Valve Installation

Reference numbers used in these instructions corre- spond to Parts included in Kit and are provided on page

5.Parts identified with an alpha character are user pro- vided or already installed components.

To ensure the correct pressure relief valve is used and pressure settings are correct, always use new parts included in your Vent Valve Kit for reassembly.

1.If unit has already been in service, relieve pressure (see Pressure Relief procedure, page 2).

2.Disconnect Dyna-Star HP or HF pump from main power source.

3.Remove outlet tubing from port marked “0” on the pump adapter block (a) (FIG. 2).

Instructions

5.Loosen, remove and discard the 3 socket head cap screws (b) from the adapter block (a) (FIG. 3).

FIG. 3

6.Remove adapter block (a) and o-rings (c) (FIG. 3). Discard these parts according to state and local codes for proper disposal. These parts will not be used for reassembly.

7.Grease o-rings (8) and install o-rings in vent valve block as shown in FIG. 4.

FIG. 2

4.Remove plug or inlet tubing from port marked “1” on the pump adapter block (a) (FIG. 2).

FIG. 4

Clean surface of the Dyna-Star pump outlet with a clean dry cloth. Inspect pump surface for scratches or nicks. A scratched surface can result in fluid leakage.

332519F

77X540 specifications

The Graco 77X540 is a powerful and versatile airless paint sprayer designed for professionals and DIY enthusiasts looking to achieve a flawless finish in their projects. This innovative sprayer is characterized by its robust design, advanced technology, and a range of features that enhance user experience and efficiency.

One of the standout features of the Graco 77X540 is its high-efficiency airless pump, which delivers a consistent flow of paint with minimal overspray. This results in a smooth, even application that reduces the need for touch-ups and saves both time and material. The pump is designed to handle a variety of coatings, including latex, primers, and stains, making it a reliable choice for different types of jobs.

The Graco 77X540 is equipped with the SmartControl technology, which provides precise pressure control for different spray demands. This feature allows users to adjust the pressure settings on-the-fly, ensuring optimal performance across a wide range of materials and surfaces. Additionally, the unit includes a robust reversible tip, making it easy to clear clogs and continue working without interruption.

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For those who prioritize convenience, the Graco 77X540 features a flexible suction hose, allowing for direct painting from a paint bucket. This not only streamlines the painting process but also minimizes mess and waste. The unit also boasts a built-in pushprime feature enabling quick and easy start-up, further enhancing productivity.

Overall, the Graco 77X540 is designed with the user in mind, offering a combination of power, efficiency, and ease of use. Whether you're tackling a large residential project, commercial jobs, or smaller DIY tasks, the Graco 77X540 stands out as a reliable and effective solution for achieving a professional-grade finish. With its advanced technologies and thoughtful design, this airless paint sprayer elevates the painting experience, making it an essential tool in any painter's arsenal.