Troubleshooting

NOTE: Check all possible problems and solutions before disassembling the pump.

PROBLEM

CAUSE

SOLUTION

 

 

 

Pump fails to operate.

Restricted line or inadequate air supply.

Clear line; increase air supply.

 

 

 

 

Insufficient air pressure; closed or

Open, clean.

 

clogged air valves, etc.

 

 

 

 

 

Exhausted fluid supply.

Refill; purge all air from pump and fluid

 

 

lines.

 

 

 

 

Damaged air valving mechanism; stalling.

Service air motor (see manual, supplied).

 

 

 

 

Dried fluid seizure of displacement rod

Clean rod; check or replace throat pack-

 

(26).

ings (18, 23); always stop pump at bot-

 

 

tom of stroke and keep wet-cup filled with

 

 

compatible solvent.

 

 

 

Pump operates but out-

Restricted line or inadequate air supply.

Clear line; increase air supply.

put is low on both

 

 

strokes.

 

 

 

 

 

 

Insufficient air pressure; closed or

Open, clean.

 

clogged air valves, etc.

 

 

 

 

 

Exhausted fluid supply.

Refill; purge all air from pump and fluid

 

 

lines.

 

 

 

 

Clogged fluid line, valves, etc.

Clear*.

 

 

 

 

Packing nut (36) is too tight.

Loosen (see page 9).

 

 

 

 

Loose packing nut (36) or worn throat

Tighten packing nut (see page 9);

 

packings (18, 23).

replace throat packings (see page 14).

 

 

 

Pump operates but out-

Held open or worn intake valve.

Clear; service. See page 14.

put is low on down

 

 

stroke.

 

 

 

 

 

Pump operates but out-

Held open or worn fluid piston valve or

Clear; service. See page 14.

put is low on down

packings (18, 23).

 

stroke.

 

 

 

 

 

Erratic or accelerated op-

Exhausted fluid supply.

Refill; purge all air from pump and fluid

eration.

 

lines.

 

 

 

 

Held open or worn intake valve.

Clear; service. See page 14.

 

 

 

 

Held open or worn fluid piston valve or

Clear; service. See page 14.

 

packings (18, 23).

 

 

 

 

*To determine if the fluid hose or gun is obstructed, relieve the pressure. Disconnect the fluid hose and place a container at the pump fluid outlet to catch any fluid. Turn on the air just enough to start the pump (about 20–40 psi [0.14–0.28 MPa, 1.4–2.8 bar]). If the pump starts when the air is turned on, the obstruction is in the fluid hose or gun.

12 306981

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Graco 306981AD important safety instructions Troubleshooting, Problem Cause Solution
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306981AD specifications

The Graco 306981AD is a versatile and innovative airless paint sprayer designed for professionals and DIY enthusiasts alike. This powerful tool simplifies the painting process, delivering a smooth and even finish across various surfaces. With a focus on efficiency and ease of use, the Graco 306981AD stands out in the market of painting equipment.

One of its main features is the ProXChange technology, which allows users to swap out worn or damaged pumps quickly and without needing special tools. This feature minimizes downtime, enabling more time to be spent on painting rather than equipment maintenance. Additionally, the Graco 306981AD is equipped with a high-efficiency piston pump that delivers consistent pressure, ensuring a fine spray pattern with minimal overspray.

The sprayer supports a wide range of coatings, from thin stains to thicker paints, thanks to its adjustable pressure setting. Painters can easily control the flow of paint to achieve their desired finish. The Graco 306981AD also includes an easy-to-use swivel connector, allowing users to maneuver the sprayer in tight spaces and at various angles without hassle.

In terms of design, the Graco 306981AD features a compact and portable setup. Weighing only a fraction of traditional sprayers, it includes a robust carry handle that enhances portability for on-the-go projects. The durable construction means it can withstand the rigors of demanding job sites, while the streamlined pump design promotes easy storage when not in use.

Another notable characteristic is its SmartControl technology, which provides a steady and adjustable pressure output, ensuring an optimal finish without the risk of material waste. This innovation allows for more consistent results across different applications, whether painting walls, fences, or furniture.

The Graco 306981AD is designed with user comfort in mind, featuring an ergonomic grip that reduces hand fatigue during extended tasks. Coupled with its low vibration operation, the sprayer ensures a comfortable working experience without compromising on performance.

In summary, the Graco 306981AD is a forward-thinking airless paint sprayer that combines efficiency, durability, and ease of use. Its advanced technologies like ProXChange and SmartControl, alongside its versatile functionality and user-centric design, make it a top choice for anyone looking to achieve professional results in their painting projects.
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