Repair the heat gun with your own hands

The heat gun is used to heat various rooms. Usually it is a question of garages, workshops, store rooms, etc. The fan heater has several undeniable advantages, because of what it is often used in home workshops and garages. Now we will deal with the design of the heat gun and talk about the principle of the unit. But most carefully consider the repair of the heat gun. This is not so difficult, so you can do such work yourself.

On the principle of action

A heat gun is called a heat gun because it has the same operating principle, but with slight differences. The essence in any case is preserved: air passes through the heating element, resulting in a certain temperature. Afterwards, it is injected with a concentrated stream into the room. The design provides for the presence of a special sensor, so when the optimum temperature in the room is reached, the heat gun is shut off, which saves fuel. Of course, diesel is used as fuel, although the masters create devices that work on waste engine and transmission oil. There are also gas heat guns, but more on this later. So, this kind of heater has a lot of vulnerabilities, so periodic repairs are required. What is it? Usually this is a fan replacement, nozzle cleaning, etc. In order to understand what the most vulnerable places, you need to understand the design.

About the device

The heat gun, regardless of the type of fuel and power used, is equipped with a metal casing that prevents any objects from falling onto a heating element or blower, which can lead to undesirable consequences, such as a fire or equipment failure. A fuse must be present. It will automatically turn off the gun if it overheats. In the metal case there is a burner, as well as ducts supplying diesel fuel. For supply, you can use a compressor or a small pump, and for circulation of air flows - a supercharger and a fan. Strangely enough, but the fan most often fails. This happens for a variety of reasons. We will try to figure out how to prevent damage, and how to fix it.

Causes of malfunctions

There is nothing to talk about here. As practice shows, absolutely any element of a design can break, so you can not tell by eye. This happens for a variety of reasons. Sometimes the user simply does not follow the rules of operating the heating equipment, in other cases the responsible nodes fail because of poor quality of electricity. In the end, every detail and node has its own resource of work, after which the failure can happen at any time. For example, the repair of a heat gun, which was released relatively recently, is carried out in the service departments. This is especially true if the device is under warranty. If not, then you can try to restore the gun on its own. But not everyone buys a new heat gun, but uses an old one, which is unclear how it works.

Repair work of old fan heaters

It is with this technique and often have to deal. But there is nothing to worry about, since the construction of such thermal cannons is relatively simple, so with a minimum knowledge of electrical engineering you will be able to cope with this work. In the simplest version, the heat gun is a metal housing, inside which there are several heating elements (TENs), as well as a compressor for air injection. To adjust the temperature, a multi-position switch is used, more rarely "automatic machines". Let's talk in detail about how to repair a heat gun as a whole or any elements separately. As a rule, there is no sense in giving the old products to the workshop. The cost of restoration works will be high, but their quality is very doubtful.

Repair of diesel thermal gun

Most often, the cause of the malfunction is the heater. To check whether this is so, it is possible experimentally. If the heat gun does not heat the air or does it inefficiently, then it makes sense to think about it. But since the design provides for a group of heating elements, one will have to ring each and determine which one has broken. At the same time, it is necessary to understand that the air heater itself is not being repaired and restored, so if it fails, it will have to be completely changed.

For ringing, you need to use a conventional screwdriver with an indicator and a tester. In this case, the supply wires should be disconnected. Sometimes the plates of the heating element are fused, or the outer shell is deformed. In this case, a replacement can be made without delay.

Electric motor repair

If we are dealing with the failure of the fan motor, then the situation becomes somewhat more complicated. Determine this breakdown is quite simple - there is no directional flow of warm air. At the same time, it is necessary to understand that there is a threat of failure of TETs, since they are not cooled and can easily overheat.

Repair work must begin with checking the voltage at the terminals. If necessary, the contacts need to be cleaned. Next is to go to the winding of the motor. However, a screwdriver with a tester here is of little help, so it's better to use more accurate devices, such as a multimeter or an analog tester. In addition, the insulation of the winding is additionally checked. If the core is out of order, then in this case it is easier to change the whole motor. In any case, it will be faster and easier.

Repair of a thermal gas gun

Such heaters are equipped with special burners. It is often in them that the reason lies. For example, if a mixture of gas with oxygen is not ignited, then most likely it's the nozzles. They must be removed, purged with compressed air or rinsed under pressure, then inserted back. The absence of a spark indicates a malfunctioning piezo spark. In this case, it is necessary to clean the contacts or simply replace the piezo. If the matter lies in the malfunction of the circuit breakers, they can be removed from the structure altogether, but in this case the unit will be turned off manually. I would like to note that the old heat guns are being repaired somewhat easier than new models. This is due to the lack of a large number of electronic components. For example, if repair of Master thermal guns is being performed, special equipment will be needed to check electrical circuits.

About fan replacement

Here we are a little and figured out what a heat gun is. Master repair of such equipment can perform relatively for a small amount of money, but in most cases it is a feasible task for everyone. Most often you have to deal with a fan, since this element is most exposed to intensive wear and tear. Since in most cases we will deal with the burning of wires and their oxidation, repair is possible, but such a malfunction as mechanical damage or critical wear requires replacement of the motor. In this case, it makes no sense to perform repairs. The thermal diesel gun Kraton or any other is equipped with low power fans. Choose them based on the performance of the equipment. In any case, there are no special requirements, you can use even a small household fan, if, of course, you can fit it into the case.

Conclusion

As you can see, you can do on your own and carry out repairs of gas heat guns, as well as diesel or electric. In the case of using diesel or natural gas as a fuel, the first thing to check is the condition of the burner as well as the supply channels. If you are confronted with an electric gun, then, most likely, the case is in contacts that are cut off, burned out or oxidized. All this is eliminated quite simply and quickly, the main thing is to have a desire and a little free time. In principle, this is all that can be told on this topic. Now you know what can break down, and how to repair a heat gun.