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Cleaning and Daily Maintenance of the Spray Gun After Use

Oct. 13, 2020

1. Cleaning of the spray gun

After use, the cleaning spray gun and its accessories should be cleaned immediately. Maintenance and cleaning of the medallion is the main reason for the failure of the spray gun.

When cleaning the suction feed spray gun, first remove the paint tank), and flow the suction tube into the cup. Then loosen the air cap 2-3 turns, block the air cap with a folded rag, and then pull the trigger. This allows the paint in the spray gun to flow back into the paint tank.

Note: The air pressure used should be low. When the paint tank is still installed on the gun, do not perform the above operations, otherwise the paint will splash out of the tank.

Tighten the air cap again and pour the paint in the paint tank back into the original large tank. Clean the inside of the cup and the lid with solvent and a thin brush) Wipe off the residue with a cloth soaked in solvent. Then pour a little clean detergent into the cup, squeeze the trigger, spray the detergent, and clean the feeding pipe.

Then remove the air cap, soak it in thinner or solvent, and use a soft brush like a round toothbrush or a straw broom to clean the clogged holes. Remember, never use things like iron wire or nails to clean these small holes, because these small holes are all drilled. Clean the nozzle with a spray gun brush and solvent. Wipe the outside of the gun body with a cloth soaked in thinner, taking care to wipe off all traces of paint.

At present, automatic spray gun cleaning machines have been used in some areas and units, combined with manual hand washing to clean spray guns, and the cleaning effect is very good. Put the spraying equipment in the large barrel of the spray gun cleaning and recycling machine, cover the lid, and then turn on the pneumatic pump to rotate the cleaning liquid in the cleaning barrel. In less than 1 minute, the equipment can clean all parts for use. Compared with the traditional manual cleaning method, the automatic cleaning solution can save 10 minutes of the time of changing the paint. This cleaning device increases the safety of the painter because the skin is no longer exposed to those solvents with drying effect. In the design of the system, there is a screw plug at the bottom, which can easily drain the waste liquid.

In operations such as cleaning the spray gun, a large amount of solvent will remain. If it is poured directly, it is wasteful and not good for environmental protection. The solvent recovery machine uses high-temperature distillation to recover the dirty solvent and obtain clean solvent, which saves a lot of solvent and protects the environment.

Cleaning Spray Gun

Cleaning Spray Gun

The auto brush supplier reminds you: If the spray gun is not cleaned immediately after use, the nozzle will be partially or completely blocked, causing the spray spray from the spray gun to split (spray out dry paint fragments) or the spray shape is wrong . This is especially true for enamels with additives. Because if it is not cleaned immediately after use, the enamel paint will harden inside the spray gun.

Second, the maintenance of cleaning gun

It is best to lubricate the spray gun after working every day and lubricate the parts with a light machine. Due to normal wear and aging, seals, springs, needle valves and nozzles must be replaced regularly. The replacement should be carried out according to the manufacturer's instructions. Excessive oil will flow into the paint and oil passages, causing spraying defects. Therefore, you must be very careful when lubricating. The mixing of oil and paint will reduce the quality of spraying.


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