
Proper storage of your Graco 360 paint sprayer is critical to its longevity and can help keep maintenance costs down. It is recommended to thoroughly clean the sprayer and store it with a pump preserver, such as Graco Pump Armor, between uses. Water left in the sprayer can corrode and ruin the pump, so it is important to always circulate a storage fluid through the system after cleaning. Some users recommend covering any open paint and closing the tip, or even placing the gun in a bucket of water, to store the sprayer with paint in it.
| Characteristics | Values |
|---|---|
| Maintenance | Clean the sprayer and store with a pump preserver between uses |
| Filter cleaning | Clean the filter in the gun handle, the pump filter, the strainer, and the spray tip |
| Pump preserver | Graco Pump Armor, mineral spirits, or mineral spirits with engine oil |
| Freezing temperatures | Choose a pump preserver that will not freeze, such as mineral spirits or mineral spirits with oil |
| Water in the sprayer | Circulate a storage fluid through the system after cleaning to prevent corrosion and pump damage |
| Storage fluid | Use a pump preserver or plain, clean mineral spirits |
| Storage fluid amount | A quart of storage fluid is usually sufficient for most paint sprayers |
| Storage procedure | Relieve pressure, place the suction tube in the storage fluid, place the return tube in a waste container, adjust valves and pressure settings, and switch the power on until the storage fluid begins to come out of the return tube |
| Short-term storage | Cover open paint, close the tip, and store the gun in water or wrap it with a wet rag |
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What You'll Learn

Clean the sprayer thoroughly before storage
To store your Graco 360 with paint still in it, it is important to first clean the sprayer thoroughly. This will ensure your sprayer is ready for its next use and will help it to maintain maximum performance and efficiency.
Firstly, you need to release the pressure in the paint sprayer. To do this, hold a metal part of the gun firmly to a grounded metal pail and trigger the gun. When paint flow ends and flushing fluid appears, turn off the switch and release the trigger.
Next, clean the filters, tip, and tip guard with flushing fluid and a soft-bristled brush. You should also inspect these parts for any damage. If you have flushed your sprayer with water, be sure to flush it again with mineral spirits or Pump Armor. This will leave a protective coating that prevents freezing and corrosion.
Wipe down your sprayer hose and gun with a rag soaked in water or mineral spirits. You can also use the FlexLiner Paint Bag, which makes for fast cleanup, and can be recycled or reused.
Now your Graco 360 is clean and can be stored safely in a dry place.
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Use a pump preserver or protector product
If you're looking to store your Graco 360 paint sprayer with paint still in it, one option is to use a pump preserver or protector product. This method can keep maintenance costs down and extend the life of your sprayer.
There are several products available for this purpose, including Graco Pump Armor, Titan Liquid Shield, mineral spirits, and mineral spirits with engine oil. These products are designed to protect the internal components of your sprayer from corrosion and damage caused by paint drying or freezing. It's important to note that these products are typically only used in the pump itself and not run through the hose or gun.
To use a pump preserver, start by relieving the pressure in the sprayer and removing the hose and gun. Drain the paint from the sprayer and take off the tip and guard from the gun. Hold the gun upside down, pull the trigger, and pour the pump preserver into the gun inlet until some of it comes out of the spray end. Release the trigger and place the gun, guard, and tip into a sealed bag with a small amount of the preserver. You should also seal the hose fitting on the sprayer to prevent leakage.
Additionally, if your sprayer will be stored in freezing temperatures, it's crucial to choose a pump preserver that is designed for cold conditions, such as mineral spirits, which can protect down to -30° F. Always follow the specific instructions provided by the manufacturer of your chosen pump preserver for optimal results.
By following these steps and using a pump preserver or protector product, you can effectively store your Graco 360 paint sprayer with paint still in it, ensuring its longevity and reducing maintenance costs.
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Store in a way that prevents paint drying
To store your Graco 360 with paint still in it, you'll need to take some steps to prevent the paint from drying out. Firstly, make sure the paint is well-sealed. Use a rubber mallet to tap the lid down securely, avoiding the use of a hammer as this can dent the lid and make sealing more difficult. If you don't have a mallet, cover the can with a piece of wood and then hammer the lid closed.
Store the Graco 360 in a cool, dry, and dark location, such as a basement or a cabinet/closet in your house. Extreme temperatures can ruin paint, with cold weather causing latex paint to separate and heat drying it out. Oil-based paints stored in very hot temperatures can even trigger a fire. Keep the paint can on a shelf and away from direct sunlight.
If you have a partially-filled paint can, transfer the remaining paint into quart cans or large jars. This will reduce the amount of air in the container and help prevent drying. Additionally, you can add a very thin layer of water on top of the paint before sealing and storing it. This thin layer of water will help keep the paint from drying out.
Label your paint can with the brand, paint name, date of purchase, and room painted. Place a small amount of paint on the side of the can for easy colour identification.
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Protect the sprayer from freezing temperatures
Protecting your sprayer from freezing temperatures is essential to prevent damage and ensure it remains in good working condition. Here are some detailed steps to achieve this:
Firstly, it is important to winterize your sprayer before freezing temperatures arrive. This includes taking the time to clean and flush the sprayer, removing any residual paint or other liquids from the system. Pay particular attention to the rinse tank, if your sprayer has one, as this should be winterized first by pouring in an antifreeze solution.
Next, you'll want to run the antifreeze solution throughout the entire spraying system, including the nozzles. Automotive antifreeze is recommended as it is less corrosive to spray equipment, but RV antifreeze or windshield wiper fluid can also be used. Be sure to check the product's label for its burst point—the temperature at which it will no longer protect against freezing.
Additionally, open and close valves while the sprayer is operating to ensure that the antifreeze reaches all areas, including inaccessible spots where water might remain trapped. This includes bypass valves, product valves, inductor valves, and agitator valves.
Finally, remember to park your sprayer under cover during freezing temperatures, and in the morning, turn the pump by hand to check for any ice jamming. If ice is detected, wait for it to melt completely before operating the sprayer.
By following these steps, you can effectively protect your sprayer from freezing temperatures and ensure it remains in good working condition.
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Use eye protection and ground equipment when handling flammable materials
When storing flammable materials, it is crucial to prioritise safety. Understanding the hazards of handling and storing flammable and combustible liquids is essential for maintaining a safe environment. Here are some detailed instructions to ensure your safety:
Use Eye Protection
The vapours from flammable materials can irritate the eyes, creating unsafe conditions. Some vapours are corrosive and can cause permanent eye damage. Examples of appropriate eye protection include safety goggles, glasses, and face shields. Ensure that your chosen eye protection is chemical-resistant and fitted correctly to your face.
Ground Equipment
Grounding flammable liquid containers is crucial to preventing potential hazards. Bonding and grounding are essential procedures to ensure safety. Bonding involves connecting two conductive objects to achieve the same electrical potential, while grounding ensures that objects have zero electrical potential by directing energy into the ground. These measures help prevent sparks that could ignite the flammable liquids.
Additional Safety Measures
It is important to wear appropriate personal protective equipment (PPE) when handling flammable materials. This includes non-flammable and non-absorbent gloves, protective clothing, and non-static clothing. Keep flammable liquids away from ignition sources, open flames, smoking areas, and direct sunlight. Store flammable liquids in covered metal receptacles or safety cans, ensuring good ventilation to prevent vapour buildup. Always refer to Safety Data Sheets (SDSs) for specific PPE requirements.
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Frequently asked questions
Cover any open paint and close the spray tip. You can also leave the gun in a bucket of water or wrap it in a wet rag and put it in a bag.
Circulate a storage fluid through the system after cleaning. You can use a pump preserver such as Graco Pump Armor or plain mineral spirits.
Clean your sprayer thoroughly before storage. Then, use a pump preserver such as Graco Pump Armor, mineral spirits, or mineral spirits with oil.
Clean your sprayer thoroughly before storage. Then, use a pump preserver such as Graco Pump Armor, mineral spirits, or mineral spirits with oil. Make sure to choose a pump preserver that won't freeze if your sprayer will be stored in freezing temperatures.











































