Operation

Pressure Relief Procedure

WARNING

INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid

under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

Dare instructed to relieve the pressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dinstall or clean the spray tip.

1.Engage the gun safety latch.

2.Open the bypass valve.

3.Turn the ignition key to OFF.

4.Close the fuel shutoff valve.

5.Disengage the gun safety latch. Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun to relieve pressure.

6.Engage the gun safety latch.

7.Open the pressure drain valve, having a container ready to catch the drainage. Leave the valve open until you are ready to spray again.

If you suspect that the spray tip or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, wrap a rag around the tip guard retaining nut or hose end coupling and VERY SLOWLY loosen the part to relieve pressure gradually, then loosen completely. Now clear the tip or hose.

1.Prepare the Fluid

a.Prepare the fluid according to the fluid manu- facturer's recommendations.

b.Place the pump or suction tube into the fluid

container.

10308972

2.Starting the Sprayer

a.Open the bypass valve to make startup easier. In the open position, the valve lever is parallel to the body of the valve. See Fig 6. Close the filter drain valve.

b.Turn the pressure control knob counterclock- wise 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 fur- ther will cause it to fall off.

c.Open the fuel shutoff valve. See Fig 6.

d.If the engine is cold, close the choke by turn- ing the lever to the ON position (horizontal). See Fig 6.

3.Turn and hold the ignition key to START until you hear the engine ªcatchº, then release the key to RUN. See Fig 6. If the engine does not start, open the choke a little (push the choke head in). If the engine floods, open the choke all the way and try again.

e.After the engine is warm, gradually open the choke lever (push choke head in completely) and close the bypass valve. See Fig 6.

AIR FILTER

CHOKE FUEL

SHUTOFF VALVE

PRESSURE

CONTROL

KNOB

ON/OFF

BYPASSSWITCH VALVE

Fig 6

7874A

 

 

NOTE: In cold weather, run the engine for about 15 minutes with the bypass valve open before starting the displacement pump, to help avoid hydraulic motor stalling.

f.Follow the Pressure Relief Procedure Warning on page 10, to shut off the sprayer.

WARNING

To stop the engine in an emergency, turn OFF the ignition key. Close the bypass valve if possible. See Fig 6. Then follow the Pressure Relief Proce- dure Warning on page 10.

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Graco Inc 308972 manual Operation, Pressure Relief Procedure, Prepare the Fluid, Starting the Sprayer
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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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