How to Use Conventional Spray-gun Systems
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There are several types of conventional spray systems. The low-pressure system uses a gun attached to the pot directly, and is used for smaller jobs requiring high degree of control. The high pressure system pressurizes the paint and the air, and consists of a large pot, and hoses for the air and paint. This system is used for larger areas. Both systems depend on a pressurized air supply from a compressor. The air is mixed with the paint at the orifice and atomises to create a fine even mist. Therefore, conventional spray systems are mainly used for solvent-based paints requiring a high quality fine finish. Set --Up procedure Attach the materials hose to the pot and tighten using a spanner. Attach the materials hose to the spray-gun, then attach the air hose. Tighten both using a spanner The amount of air can be adjusted by turning the air flow valve in or out. The amount of paint can be controlled by adjusting the fluid control screw. The fan control screw adjusts the fan width and pattern. Pour the paint into the pot. Measure and add solvent to thin the paint according to manufacturers directions.Mix thoroughly Secure the pot lid and tighten by hand. Attach the air hose from the compressor to the pot. Adjust the regulator to the desired pressure. This is usually about 45 -60 psi. Application Procedure Use the correct respirator filter for the product. Apply the paint using an even side-to-side motion. The gun should be kept at an even distance from the surface at all times, and the spray-gun should be kept moving the entire time. Overlap each stroke by 50%. The air-cap can be adjusted to direct the spray-pattern vertically, or horizontally. This is done by simply twisting the cap. Regularly check the finish to ensure the paint is being applied evenly and sufficiently. Application techniques It is better to build up the coating with several coats than to apply one heavy coat. Insufficient movement of the gun will result in a high build up of paint, leading to sagging and runs. The gun should be maintained at a constant distance from the surface, and the spray pattern should be an even, slightly oval shape. Pull the trigger just before the spray-gun passes over the surface, and release it after a full pass of the surface. Do not start or stop half-way across the surface. Keep the gun moving at all times. Clean-up procedures On completion of the work, release the pressure on the pot. You should be able to see the pressure drop by checking the regulator guage. Once the pressure is released, open the pot lid. Pour the excess paint back into a suitable container. Clean the pot using a compatible solvent. Spray solvent through the gun until it sprays clear. Clean the air cap and remove the needle. Once the needle has been cleaned replace it. All paint should be cleaned carefully from the gun to ensure trouble-free service. However, do not immerse the gun in solvent. To find out more about conventional spray-gun systems and for courses and training see http://www.painters.edu.au/Training-Courses/
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Please tell me can I use Spray Gun without any Compressor?
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thank you thank you thankyou...very informative...thank you
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Very nice &helpful video
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I have a new compressor and spray gun (low pressure pot). I haven't painted with an air compressor before. I bought this setup to paint the interior of my house. I don't think I can find a low sheen oil based paint for the ceiling or walls. Do I try with a water based paint or just find the lowest sheen oil based paint I can?
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i'm a home painter however i'm a CAPENTER so i would like to know that because it will help me to give my customer an amazing finishes please notify me immediately
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can i use one spray gun in deference painting like Hi cover paint and Hi gloss paint?
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thanks very helpful
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Thanks for the very informative video I work for a fabrication company and switch from being an industrial grinder to a painter and have no past experience very appreciative of the video it will help a lot would like to see more
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This video is very informative for the novice painter. I've been a sprayer for over 40 years and I give this vid the thumbs up.
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Thanks for this, the kit i got from supercheap auto's had no instructions, and your demoing the same kit with a different brand name.
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is that a 1\4 inch fluid hose? cool v.
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Thank you for a very informative video
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