Daily use and maintenance of sand blasting machine
After use, the gun and its accessories should be cleaned immediately. The maintenance and cleaning of the medals is the main cause of the gun failure.
When cleaning the suction-feeding spray gun, first remove the paint can) and flow the suction tube into the cup. Then release 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 gun to flow back into the paint can.
Note: The air pressure used should be low. When the paint can is still mounted on the gun, do not perform the above operation, otherwise the paint will splash out of the tank.
Re-tighten the air cap and pour the paint from the paint canister back into the original large can. Clean the inside of the cup and the lid with a solvent and a thin brush. Wipe off the residue with a cloth dipped in solvent. Then pour a little clean detergent into the cup, pull the trigger, spray the cleaner, and clean the delivery tube.
Then remove the air cap, soak in a thinner or solvent, and clean the clogged holes with a soft brush like a round-headed toothbrush or a straw broom. Remember, you should never clean these holes with something like iron wire or nails, because these holes are all precision drilled. Clean the nozzle with a spray gun and solvent. Wipe the outside of the gun body with a rag that has been soaked in thinner, taking care to wipe off any traces of paint.
At present, in some areas and units have begun to use the automatic gun cleaning machine, combined with manual hand washing to clean the spray gun, the cleaning effect is very good. Place the spray equipment in the vat of the gun cleaning, recycling machine, cover the lid, and then open the air pump to rotate the washing liquid in the washing tub. The unit can clean the parts for use in less than 1 minute. Compared to traditional manual cleaning methods, the automatic cleaning solution saves the paint replacement operation for 10 minutes. This cleaner increases the safety of the painter because the skin is no longer exposed to solvents that have a drying effect. The system is designed with a screw plug at the bottom to easily drain the waste.
In the operation of cleaning the spray gun, etc., a large amount of solvent remains, and if it is directly dumped, it is wasteful and environmentally friendly. The solvent recovery machine uses high-temperature distillation to recover the dirty solvent, which can obtain a clean solvent, save a lot of solvent, and protect the environment.
Note: If the gun is not cleaned immediately after use, the nozzle will be partially or completely blocked, causing the spray from the spray gun to split (spray out dry paint fragments) or the spray shape is incorrect. This is especially true for enamels with additives. Because the enamel will harden inside the gun if it is not cleaned immediately after use. 2 The maintenance of the spray gun is better. After the work is finished, the lubricating spray gun is used, and the parts lubricated by the light machine are used. Seals, springs, needles and nozzles must be replaced periodically due to normal wear and aging. Replacement should be carried out according to the manufacturer's instructions. Excessive oil can flow into the paint and oil passages, causing spray defects, so care must be taken when lubricating, and the oil and paint mix will reduce the quality of the spray.
Do not soak the entire gun in the cleaning solution for a long time, which will harden the seal and damage the lubrication.
In order to obtain better repair results, different spray guns are used in different coatings and situations. It is recommended that each person be equipped with four spray guns, one for primer, medium coating, one for topcoat, varnish layer, one for silver paint, and one small repair gun for point repair. use. If these guns maintain good cleaning and work order, they will save a lot of adjustment and cleaning time when changing guns.
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