Repair

Repair

• To service the lower, see manual 311690.

•To service the air motor, see manual 311238.

•To service the Viscount I Plus hydraulic motor, see manual 308330.

•To service the Viscount II hydraulic motor, see manual 308048.

Disconnect the Lower

To service the lower, follow the procedure on this page, and disassemble the pump as described in manual 311690. To disconnect pump from an electric circulation assembly, EPXXXX, see manual 311594.

In stand or wall-mounted installations, you do not have to remove the entire pump from its mounting.

1.Relieve the pressure, see Pressure Relief Proce- dure page 12.

2.Disconnect the hoses from the lower and plug the ends to prevent fluid contamination.

3.Loosen the coupling nut (K) and remove the collars

(G). Remove the coupling nut from the piston rod

(H). Unscrew the locknuts (B) from the tie rods (C). Pull the lower (D) off the motor (E). See FIG. 5 and FIG. 6.

Reconnect the Lower

If the coupling rod (F) and tie rods (C) have been disassembled from the motor, see Reassemble the Coupling Rod and Tie Rods to the Motor on page 16.

1.Assemble the coupling nut (K) to the piston rod (H).

2.Orient the lower (D) to the motor (E). Position the lower on the tie rods (C). Lubricate the threads of the tie rods. Screw the tie rod locknuts (B) onto the

tie rods. Tighten the locknuts and torque to 50-55 ft-lb (68-75 N•m).

3.Insert the collars (G) into the coupling nut (K). Tighten the coupling nut onto the piston rod (H) and torque to 90-100 ft-lb (122-135 N•m).

4.Flush and test the pump before reinstalling it in the system. Connect hoses and flush the pump. While it is pressurized, check for smooth operation and leaks. Adjust or repair as necessary before reinstall- ing in the system. Reconnect the pump ground wire before operating.

NXT Pump

E

Shown

 

F

2C

G 3

1

Torque to 90-100 ft-lb

K 1

 

(122-135 N•m).

 

 

 

3

H

2

Torque to 50-60 ft-lb

 

 

(68-81 N•m).

 

3

Apply lubricant.

D

 

2 B

TI8394b

FIG. 5

311211L

15

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Image 15
Graco 311211L important safety instructions Repair, Disconnect the Lower, Reconnect the Lower
Page 14 Page 16

311211L specifications

The Graco 311211L is a highly versatile airless paint sprayer designed for both professional contractors and DIY enthusiasts. This powerful machine stands out in the market due to its robust construction, exceptional performance, and innovative features that enhance the painting experience.

One of the main features of the Graco 311211L is its high-efficiency piston pump, which is capable of delivering a pressure of up to 3300 PSI. This allows users to spray thicker materials without compromising on the quality of the finish. The machine's pump is designed to handle a variety of coatings, including paints, stains, and sealers, making it suitable for a wide range of applications.

Another key characteristic of the Graco 311211L is its ability to support a broad range of hose lengths, accommodating up to 150 feet. This flexibility is particularly beneficial for large projects, as it provides users the freedom to move around without the constraints of a short hose. The airless design ensures a smooth and even application, reducing the need for back-and-forth brushing, saving time and effort.

The machine is also equipped with a convenient QuickChange tip system that allows users to interchange spray tips with ease. This feature promotes efficiency, as users can quickly switch between different spray patterns and widths to achieve the desired finish. Additionally, the Graco 311211L boasts a built-in pressure control that enables you to adjust the spray pressure according to the job requirements, ensuring optimal performance and consistency.

User comfort and convenience are further enhanced through its ergonomic design, which includes a lightweight construction and a well-balanced frame. This makes it easy to maneuver during extended use. Furthermore, it offers an integrated storage compartment for accessories, keeping everything organized and easily accessible.

In summary, the Graco 311211L airless paint sprayer combines performance, efficiency, and user-friendly features, making it an excellent choice for both professionals and DIY enthusiasts. Its adaptability to various coatings and surfaces, coupled with advanced technologies, makes it a standout option in the competitive paint sprayer market. Whether for interior or exterior projects, the Graco 311211L promises to deliver a high-quality finish with minimal effort.
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