Flushing

When to Flush

1.New sprayer. Your new sprayer was factory tested with lightweight oil which was left in to protect pump parts from corrosion.

Before using oil±base paint, flush with mineral spirits only.

Before using water±base paint, flush with mineral spirits, followed by soapy water, then a clean water rinse.

2.Changing colors. Flush with a compatible solvent such as mineral spirits.

3.Changing from water±base to oil±base paint. Flush with soapy water, then mineral spirits.

4.Changing from oil±base to water±base paint. Flush with mineral spirits, followed by soapy water, then a clean water flush.

5.Storage.

Water±base paint: flush with water, then mineral spirits and leave the pump, hose and gun filled with mineral spirits. Follow the Pressure Relief Procedure Warning, page 10.

Oil±base paint: flush with mineral spirits. Follow the Pressure Relief Procedure Warning, page 10.

6.Startup after storage.

Before using water±base paint, flush out mineral spirits with soapy water and then clean water. When using oil±base paint, flush out mineral spirits with fluid to be sprayed.

How to Flush

WARNING

INJECTION HAZARD

Follow the Pressure Relief Procedure Warning on page 10. Remove the spray tip before flushing.

1.Engage the gun safety latch. Remove the spray tip from the gun.

2.Pour enough clean, compatible solvent to fill the pump and hoses into a large, grounded metal pail.

3.Place the suction tube into the pail or tilt the sprayer back (it will support itself) and place the pail under the pump. Then tilt the sprayer forward to lower the pump into the pail.

4.Turn the pressure control knob counterclockwise until all spring tension is relieved. You will be able to feel it. The sprayer is now set at the lowest pressure setting. Turning the knob further will remove it. Tighten the knob locknut to set. See Fig 5.

5.Open the bypass valve. The valve lever will be parallel to the body of the valve. See Fig 5.

6.Open the fuel shutoff valve by turning it to horizon- tal. See Fig 5.

7.Close the choke by pulling out on the choke head. See Fig 5.

CAUTION

The bypass valve must be opened when starting the sprayer to prevent damaging the starter.

8.Turn and hold the ignition key to START until you hear the engine ªcatchº, then release the key to RUN. See Fig 5. If the engine does not start, open the choke a little (push in on head). If the engine floods, open the choke all the way and try again.

AIR FILTER

CHOKE FUEL

SHUTOFF VALVE

PRESSURE

CONTROL

KNOB

ON/OFF

BYPASSSWITCH VALVE

Fig 5

7874A

 

 

9.After the engine is warm, gradually open the choke lever (push choke head in completely) and close the bypass valve. See Fig 5.

10.Point the gun into the grounded metal pail and hold a metal part of the gun firmly against the pail.

NOTE: To save the fluid in the pump and hose, trigger the gun into the paint container or a separate clean container. At the same time, slowly turn the pressure control knob clockwise just enough to start the pump. When solvent appears, release the trigger and continue as below.

8308972

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Graco Inc 308972 manual Flushing, When to Flush, Startup after storage, How to Flush, Injection Hazard
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308972 specifications

Graco Inc 308972 is a highly regarded product in the realm of fluid management systems, specifically designed for professionals who require efficient and reliable performance in their applications. This model is particularly popular among those in industries such as painting, automotive, and manufacturing, where precision and durability are critical.

One of the standout features of the Graco Inc 308972 is its advanced pump technology. This model is equipped with a robust pneumatic pump system that ensures consistent fluid delivery, minimizing the risk of uneven application. The pump's design allows it to handle a wide range of fluids, from water-based materials to viscous coatings, making it versatile for various tasks.

Another key characteristic of the Graco Inc 308972 is its user-friendly interface. The equipment is designed with ease of operation in mind, featuring simple controls that allow users to adjust settings on-the-fly. This is particularly beneficial in fast-paced environments where quick adjustments may be necessary to maintain productivity.

In terms of build quality, Graco is known for using high-grade materials that enhance the longevity of their products. The 308972 model is constructed to withstand the rigors of daily use, featuring corrosion-resistant components that extend its lifespan even in challenging conditions. This durability reduces the need for frequent replacements and repairs, providing excellent value for users.

The Graco Inc 308972 also boasts impressive safety features. It includes built-in pressure relief mechanisms that prevent over-pressurization, reducing the risk of accidents during operation. The model prioritizes user safety, ensuring that operators can work with confidence.

Moreover, the model is designed for easy maintenance. Regular upkeep is simplified by easily accessible components, allowing users to perform routine checks without extensive disassembly. This design consideration enhances the overall efficiency of operations, as downtime for maintenance is minimized.

Overall, the Graco Inc 308972 is a reliable and versatile solution for fluid management. With its advanced technology, user-friendly design, durability, and safety features, it stands out as an essential tool for professionals across various industries seeking efficiency and precision in their work. Whether for large industrial applications or smaller, detailed jobs, this model delivers the performance needed to complete tasks effectively.
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