Airless spray gun: Instruction manual

The airless spraying device can be represented by different types and models, but they are based on the general principle of operation and differ in characteristics. The ink is applied by pumping liquid through the nozzle of the device. Its name was acquired due to the absence of an air compressor. Among the positive sides, it is worth noting the rapid carrying out of a large amount of work and a high-quality supply of coloring.

Course of work

To begin with, the surface must be prepared for painting. Those places, on which hitting paint is undesirable, are covered with polyethylene. Clothing and hands must also be protected. The process of spraying is characterized by the formation of a cloud of paint, because of which the tiny particles diverge everywhere. To prevent harmful effects on the body, you must use a respirator, glasses and a special suit.

When carrying out interior work, it is necessary to protect walls, floors, and other elements, such as switches, door hinges and handles. If the painting is carried out outside the premises, it is worth remembering that the paint is quickly spread by the wind and settles on all surfaces within a radius of 7-10 meters.

The Wagner spray gun should be positioned perpendicular to the plane being processed and move in uniform strips. The ink supply is switched on only after the device starts moving.

The device is thoroughly cleaned after each use, it is important that the cleaning is done before the ink composition begins to dry out. This will ensure better performance and extend the service life.

Features

With mismanagement, you can accidentally spoil the appearance of objects, so the work should be carried out in accordance with all the rules.

Also of particular relevance is the consistency of paint and solvent, for example, water can not be used to dilute the oil substance.

The nozzle is small in size, which can often be clogged with grains of dried paint, small debris. When a sorbitol enters a jar with a coloring composition, it must be filtered through a sieve made of synthetic material.

The best option is an airless sprayer with a replaceable nozzle, thanks to which you can quickly replace the clogged nozzle and return to work.

Security measures

The ink is delivered under high pressure. There is a risk of injury when directing the device to any part of the body. In this case, skin lesions may not be noticeably damaged, while substances have already penetrated the circulatory system or soft tissues. In any case, you need to urgently go to the hospital.

Spray gun "Wagner" is suitable for almost all types of materials, except textured.

The device can be pressurized even after being disconnected from the power supply. After completion of use, pressure must be released by directing the nozzle to a safe place and simultaneously depressing the feed lever or opening the valve.

Advantages and disadvantages

The absence of fog is the main advantage of using airless technology. It is also worth noting the high performance, which can not boast of air and combined techniques. In addition, the airless spray gun is characterized by a sufficient speed of operation, the possibility of using a small amount of diluting compounds, distinctive autonomy, ease of use and movement, and low material consumption.

Despite many advantages, there were some drawbacks, among which the quality of the airless coating, which loses noticeably compared to the result obtained with the use of a pneumatic device.

An airless spray gun can not provide a wet film with a thickness of 100 μm, while the equipment is quite expensive.

What do I need to know?

The device is designed for work both indoors and outdoors. Optimal formulations for use are varnishes, polishes and water-based paints, characterized by rapid drying. Some devices can also act as air ducts.

The choice of an airless spray gun is optimal for working with building colorants and soils, under the condition of industrial processing or distribution of paint on a wide plane to obtain a coating that does not pretend to be of high quality. Also the device is convenient for processing wood material with flame retardants and metal objects with compositions preventing corrosion development.

The tool consists of a handle, a power wire, a spray regulator, a permanent fastener, a shut-off button, a replaceable nozzle, a paint tank and an electric motor.

How does an airless spray gun work?

The location of the container affects the method of distribution of funds for processing. On the body of the device there are tanks, from which the paint material comes out by gravity due to the discharge, then the plunger pump provides the exit of the paint from the device. Airless technique is characterized by a sharp decrease in the pressure in the nozzle, that is, the paint appears in normal atmospheric conditions after being under pressure at 500 atm. Inside the instrument. The flow velocity is slowed by air, which acts as a retarding medium and provides surface coverage.

Airless high-pressure spray gun creates a torch, which is distinguished by a sharp distinction between the area of the spot and the same droplet size. The nozzle settings and its replacement with another version allow changing the shape of the torch. It is possible to obtain different bands, dots or spots, and also change the thickness of the applied coating.

rules

Compliance with the established rules allows you to achieve the desired result of work and extend the service life of the device:

• Before starting work, it is necessary to check the tightness of the tube in the inlet;
• The old paint system may have an unsuitable consistency to check this, it is necessary to strain it through a sieve;
• For materials with different thicknesses, appropriate nozzles are used;
• The use of certain materials is possible only after it has been brought to the required consistency;
• The airless spray gun must be cleaned immediately after each use;
• Additions of lubricating components require paint, which includes latex, which is more than 20% of the total mass;
• Nozzles should be systematically checked for damage;
• The electrical components of the device must not come into contact with the liquid;
• If long-term storage is planned, the piston and cylinder are lubricated by a special compound.

Air and airless spray gun: differences

The method of distribution of the coloring material is the main difference. Air technology provides the supply of paint with a jet of compressed air, rather than a piston element. For this, an external or built-in compressor is used. The first option opens more possibilities for application, despite the less mobility of the device. The device conveniently lies in the hand and does not transmit vibrations to it.

Air spray gun for home based on air technology provides a higher quality coating by using compounds with a liquid consistency. It is optimally suited for a small-sized surface and is indispensable for the frequent replacement of a color composition. In this case, it is worth noting the main drawback, which is the high formation of fog, which contributes to an increase in the consumption of paint and varnish material.

One of the types of air devices are electric rollers. They differ from the spray guns with structural elements and the replacement of the spray part on the roller, which allows the paint to be evenly distributed.