Troubleshooting, Disassembling pump

Troubleshooting

				1. Relieve the pressure.
				2. Check all possible problems and solutions before
				disassembling pump.
				disassembling pump.

	PROBLEM		CAUSE		SOLUTION


Pump output low on both strokes.		Restricted air or hydraulic supply lines.			Clear any obstructions; be sure all shutoff
					valve are open; increase pressure, but do
					not exceed maximum working pressure.

		Exhausted fluid supply.			Refill and reprime pump.

		Clogged fluid outlet line, valves, etc.			Clear.

		Worn piston packing.			Replace. See lower manual 311690.

Pump output low on only one stroke.		Held open or worn ball check valves.			Check and repair.

		Worn piston packings.			Replace. See lower manual 311690.

Pump operates erratically.		Exhausted fluid supply.			Refill and reprime pump.

		Held open or worn ball check valves.			Check and repair.

		Worn piston packing.			Replace. See lower manual 311690.

		Excessive hydraulic fluid supply pressure			See Viscount I Plus motor manual
		to Viscount motor.			308330 or Viscount II manual 308048.

Pump will not operate.		Restricted air or hydraulic supply lines.			Clear any obstructions; be sure all shut
					off valves are open; increase pressure,
					but do not exceed maximum working
					pressure.

		Exhausted fluid supply.			Refill and reprime pump.

		Clogged fluid outlet line, valves, etc.			Clear.

		Damaged air motor or hydraulic motor.			See air motor manual 311238 or hydrau-
					lic motor manual 308330 or 308048.

		Fluid dried on piston rod.			Disassemble and clean pump. See lower
					manual 311690. In future, stop pump at
					bottom of stroke.

Pump will not prime		Suction line clogged.			Clear. Flush more frequently.

		Held open or worn ball check valves.			Check and repair.

		Piston assembled with wrong nut.			Use only the large, round, special nut.

Excessive throat leakage.		Worn piston rod or throat packings.			Replace. See lower manual 311690.

Pump will not stall when fluid is shut off.		Warn ball check valves.			Check and repair.

		Worn piston packing.			Replace. See lower manual 311690.

311211L

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.

Troubleshooting

disassembling pump.

PROBLEM

CAUSE

SOLUTION

311211L specifications