Answer:

Overheating can happen with almost any equipment, especially where work is carried out high currents or temperatures. Therefore, overheating of a welding inverter is a common thing, quite natural, and there is no need to rush to be afraid of it. Moreover, almost all welding machines today are equipped with overheating protection, which is designed to prevent equipment breakdown due to such situations.

Overheating of the welding inverter occurs when the machine is working long time without a break. In this case, the time period for each specific model will be individual. However, for household welding inverters it ranges from thirty minutes to one and a half hours (depending on the quality of components and assembly of the device), for semi-professional models this period increases and ranges from an hour to two hours, and professional welding inverters can often work for a very long time.

It should be taken into account that the operating time interval also strongly depends on the temperature in environment. On a hot sunny day, overheating can occur much faster than during cooler hours in the off-season. By the way, each device has a built-in ventilation system, otherwise it would not be able to work for even a few minutes. But making it very large, efficient, but at the same time cumbersome is impractical. Therefore, than smaller device, the less often is his period of work without rest.

How to determine that the welding inverter is overheated? It will turn off and refuse to turn on for a while. This will mean that the protection has worked. However, we do not recommend letting things go to such a semi-emergency shutdown. Determine the approximate working time period for your tool and give the device a rest in advance so that it does not wear out too quickly.

By the way, it is believed that among household welding inverters, and have a long operating time. That is why these devices are purchased with such pleasure by summer residents, who usually use them during hot summers. vacation days. From semi-professional and professional equipment Germans have proven themselves well in this regard

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Features of operation and possible malfunctions welding inverters.

Features of operation and possible malfunctions of welding inverters.

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Equipment such as a welding machine has always been in demand. Especially if he small sizes, compact, operating at a voltage of 220 volts, which is very convenient when carrying out welding work in places where it is difficult to use bulky and powerful devices. For example, on construction sites, in car repair services, household appliances etc.

But, most importantly, a welding machine, the weight of which seems ridiculous for such equipment, sometimes it does not exceed 5 kg, due to its compactness and mobility it is easy to use when repairing personal equipment, construction individual houses, construction of some metal structures on summer cottages etc. In a word, such a welding baby will come in handy everywhere.

Now modern technologies allow to manufacture in wide range and a large number of compact and mobile welding machines that are used not only in industry, but also at home. You can practically buy them in any store for the sale of equipment. Big choice and reasonable price welding machines allow everyone to buy them without any problems.

Currently, welding machines are very popular. different models Latvian company Resanta. This equipment High Quality. In Russia, the demand for Resanta welding machines is very high. They are convenient to transport, because their size and weight allow you to transport equipment even in the trunk passenger car. And carry it over short distances by one person.

The advantages of Resanta were appreciated not only by professional welders, but also by amateurs who do not have sufficient experience in welding work.

The company produces two types of welding equipment: Resanta welding machine and Resanta welding inverter. The difference between them is that the first type is a transformer unit, and the second is an inverter unit. Both differ from each other in various respects.

However, no matter how reliable the device is, and no matter how much safety margin it has, sooner or later some part may fail and it will need repair. Just as there is no perpetual motion machine in nature, there are no perpetual mechanisms. Breakdowns are inevitable with both the Resanta welding machine and the Resanta inverter. Let's consider general signs and the reasons for both types of welding equipment from a Latvian company, leading to repairs.

Signs and causes of welding inverter breakdowns

Signs by which you can determine that the Resanta welding inverter repair required:

• electrode sticking
• instability electric arc
• lack of arc
• device overheating
• inverter does not turn on

Causes of malfunction

Electrode sticking occurs in the following cases:

• low voltage
• using an extension cord with a cross-section of less than 2.5 mm
• burnt contacts
• poor cable contact

Arc instability is caused by:

• incorrect adjustment of welding current
• mismatch between the type and diameter of electrodes

Lack of arc in caused by the following reasons:

• cable break
• inverter overheating
• lack of "mass"
• failure of a printed circuit board, where one or even several parts have failed

Device overheating can happen when:

• it works for a long time at full load without interruption
• cooling fan failed
• there is a large layer of dust on the printed circuit board parts

Reasons when the inverter does not start after pressing the “Start” button. those. does not start working, may be as follows:

• absent completely or low voltage nutrition
• something is faulty: cable, socket or switch
• on printed circuit board Some element has broken down
• extension cord needs to be replaced

Welding machine breakdowns

Causes of breakdowns, because of which often welding units are being repaired:

Any manufacturer values ​​his reputation and will not produce low-quality products. However, no matter how good the assembly of the same welding machine, during operation from vibration, constant transportation, etc., the contacts on terminal blocks, to which the welding cables are connected, weaken. And as a result, strong heating of the parts occurs at the junction points, which leads to their destruction and short circuit in the network, and therefore to repair. To prevent this, you need to regularly monitor the contacts on the terminals, and, if necessary, sort out and clean the connecting contacts, thereby ensuring tight contact of all parts.

It often happens that the welding machine suddenly he can switch off on his own. And this happens because in the chain high voltage happened short circuit. In this case, it is necessary to identify the defective location and eliminate the malfunction.

Loosening of the bolts tightening the transformer plates, overloads in the operation of the transformer unit of the welding machine, as well as loosening of the core or the mechanism for moving the coils lead to overheating of the unit’s transformer.

If the welding machine overheats, then it needs to take a “break”. Equipment overheating is possible during his intense work. In such cases, to prevent the unit from malfunctioning, it is recommended to reduce the operating current or use electrodes of a smaller diameter, otherwise the matter may end in repair.

If the machine does not “pull”, the reason should be sought in the mains voltage or the welding current regulator.

Main types of repair work

Some minor breakdowns of Resanta can be repaired yourself, without the help of specialists. But it also happens that serious repairs are required. In this case it is best contact service center . There, for example, they can make a replacement:

• fan
• inverter boards
• transformer
• diode rectifier
• capacitors
• and other details

And carry out repairs:

• control boards
• power supply
• control module
• IMS module
• main board

To reduce repairs to your welding machine, try to operate it correctly. And then you won’t need to spend money on repairs often.

Welding inverter is modern equipment, the use of which in the welding process makes it possible to achieve very high quality work and provides the welder with the opportunity to work in comfortable conditions. But at the same time, the welding inverter also has a more complex design, compared to previous models of welding equipment, which increases the chance of a malfunction occurring during its operation.

As a rule, all malfunctions of the welding inverter can be divided into two groups:

• malfunctions associated with improper operation of the electronic “stuffing” of the device

• malfunctions associated with wrong choice operating mode.

The second type of malfunction occurs most often, therefore, before contacting a specialized workshop or starting to disassemble the device yourself in order to identify a breakdown, you need to check whether all operating mode settings are set correctly, and in addition, you should read the operating instructions for this device again, to determine if you are making any mistakes while working. Most manufacturers, when drawing up instructions, indicate the causes of welding inverter malfunctions that may occur during operation, and also describe how these malfunctions can be eliminated independently.

Causes of breakdowns of welding inverters and options for eliminating them.

There are a number typical faults, which arise when we're talking about about welding inverters:

• combustion instability welding arc and strong metal splashing;
• sticking welding electrode;
• lack of welding process when the machine is turned on;
• lack of response from the device when it is turned on.

Let us consider in more detail why this or that situation may arise, and what can be done in the event of any malfunction of welding inverters.

• Instability of the welding arc and strong spattering of metal.

This malfunction can occur if you select the wrong current when welding. Usually, welding current is selected in accordance with the type and size of the electrode used for welding. But here it is necessary to remember one more thing important rule: the selected current must correspond to the speed at which welding is carried out. If the welding speed decreases during operation, then the welding current must be reduced.

• Welding electrode sticking.

In fact, there may be several reasons for this type of malfunction. It is quite possible that during welding the voltage in the network suddenly decreased, which led to severe sticking of the welding electrode. It can also “stick” if the inverter is connected to the network with a cable with too small a cross-section. Another reason for this “behavior” of the electrode may be poor contact of the electrode with the surface to be welded due to the fact that the surface has undergone oxidation due to exposure to atmospheric oxygen. In this case, welding must be stopped and the surface of the part must be cleaned of film.

• Lack of welding process when the machine is turned on.

In the vast majority of cases, this behavior of the welding inverter can be explained by the lack of mass on the surface of the part being welded. In addition, it would be useful to check the condition of the welding cable - it may be damaged. This situation occurs quite often if the part being welded is heavy, as a result of which the part falling onto the wire can damage its integrity.

• The device does not respond when turned on.

If nothing happens when you turn on the welding inverter, then the cause of such a malfunction should be sought, in many cases, not in the inverter itself, but in electrical network to which it is connected. It is possible that the mains voltage is too low and therefore the device cannot operate. Another reason that the device does not turn on may be an incorrectly selected circuit breaker, installed in the shield. A weak switch can turn off when the inverter is turned on. In addition, turning off the device can lead to a loss of electricity throughout the house.

In addition to the indicated malfunctions, there are also interruptions in the operation of the welding inverter, which are not related to the breakdown of the device, but are a consequence of the fairly high-quality and timely operation of the protection systems with which the inverter is equipped. So, for example, with long-term continuous operation The inverter may turn off spontaneously. This happens if the device overheats and the temperature protection trips. In this case, you should stop the welding process for about 20-30 minutes, allow the device to cool, after which work can be continued.