Repair of heat guns. Pro Tips

rivne-cond.rv.ua

Heat guns (from gas to electric) are actively connected in the first frosts, and it is very unpleasant when the tool, “dusty” from waiting, suddenly breaks. To reduce the risks of possible malfunctions of heat guns, it is necessary to carry out regular maintenance. It is recommended to do this before the start of the heating season so that the device is ready for active use.

But if the situation has already happened - the gun is out of order - what to do? In our review, we will tell you how to repair diesel guns without involving a specialist.

Why doesn't a diesel or gas heat gun start?

There are many reasons, but we will point out the most common ones.

When the device is turned on, there is no flame or heat. There may be several options: the tubular heater is broken, poor contact with the spark plug, the injector is clogged and other issues.

The diesel gun does not start. The following scenario is possible:

• tank without fuel;
• there is excess liquid both in the diesel engine and in the tank itself;
• supercharger pressure is not adjusted;
• the filters have not been cleaned for a long time;
• the electrodes were corroded by rust during long-term storage;
• no voltage passes between the sensor and the board;
• wires are not connected to the electrode;
• transformer failure;
• The temperature sensors have failed.

You can repair a diesel heat gun yourself if the problem is minor. In case of more serious outcomes, we strongly recommend that you contact a service center, where you will be provided with professional advice and a technician will repair the heat gun quickly and efficiently.

If you want to save money or just like to fix everything yourself, the information below will be very useful for you.

How a heat gun works - before you start repairs

invt-termit.org.ua

Structurally, modern devices have thermoregulation sensors that turn off the equipment when the set temperature is reached. This saves fuel/electricity, especially when you can't keep an eye on the heater all day. The principle of operation is extremely simple - when fuel is supplied to the system and the device is connected, the fuel burns and a heat flow is supplied from a large nozzle. This device is not recommended for installation in residential premises, since fuel decay products will have nowhere to go except into the room. Garage DIYers have even come up with a machine that runs on recycled engine oil - what technology has come to!

Repair of a heat gun is often required for factory models, since you don’t know exactly where its weak points are. With a homemade one, everything is much simpler - you know in advance what the device was assembled from, and you can quickly find a replacement part. However, cleaning filters and nozzles has never hurt any device - do it regularly (cleaning nozzles and filters, replacing the fan, and much more).

Important advice! After the end of the heating season, all fuel is drained from the tank, and the inside is washed with water or a cleaning solution. Using fuel that has been sitting for a long time is extremely dangerous and ineffective!

Options with indirect heating are distinguished by the fact that they have a chimney in the design, so they are perfect for a residential building. All guns use oxygen as a substance for the chemical heating reaction, so without a ventilation system it’s simply impossible. Of course, their power is lower than standard, but they can be installed in the house without problems.

Also, if you are a great master inventor, you can start converting a direct heating gun into an indirect one. A very useful and budget-friendly activity.

Diesel heat gun repair

As mentioned earlier, all diesel appliances are directly heated, that is, they cannot be used in the home. However, such equipment has a lot of advantages - use in a garage or on a construction site, where in cold weather not only does the brick stick to your hands, but all the electronics refuse to work, it is very productive.

The entire system is “packed” in a durable metal case. Also, a fuse is installed in all devices to turn off the entire system in case of sudden overheating. Therefore, the adjustment of a diesel heat gun primarily depends on the correct setting of the fuse.

A small pump is used as a method of circulating heated air, and it is blown out of the nozzle by a fan, which is considered one of the most vulnerable areas. Inside there is a burner, a tank and a pipeline.

The main elements of each diesel device:

• exhaust pipe for smoke removal;
• at the bottom of the heat gun there is a tank for diesel fuel;
• compressor with a drive to accelerate the device.

Repairing diesel guns often costs a lot of money. Take, for example, diagnostics from a professional service – at least a thousand rubles.Many people act by trial and error until the equipment is repaired or completely fails. Then just buy a new one.

Repair of a diesel gun - individual points

For example, your diesel gun goes out. There is a high probability that the device is working properly, but the problem is that the valve spring has slipped and it is now permanently closed - the compressor simply cannot supply air to the system, and the diesel engine stalls.

Detecting a malfunction is very simple - if warm air does not move through the machine, then the device is faulty. First, we do a visual inspection: we clean the terminals and run a tester over the contacts. We also check the insulation of all wires. Some situations make it impossible to simply fix the valve and get the unit running again. You have to replace the engine, which costs a pretty penny.

This part is the main one in the design of a thermal gun: the combustion temperature of diesel fuel and its heat transfer depend on the productivity of the part.

Injectors are a rare gun failure, but they can be replaced without any problems. Tool stores are always full of such consumables, there will be no problems with this.

The most common problem is that the diesel gun does not start because the injector filter is clogged. To fix the problem, open the housing cover, unscrew the valve and take out the filter. It must be washed thoroughly in clean kerosene, after which it is blown under a compressor for greater processing, and then inserted back into the system.

Users also complain that the main problem with a diesel fuel gun lies in the weakness of the fan - it is this part that suffers the most, since it takes a lot of work.

It may also be that the wiring suddenly melted or completely burned out.Such a breakdown must be found before the start of the heating season, since it does not occur in a couple of days. Some contact was damaged during storage and requires replacement. And if you forgot to check and get a burnt-out fan, just go to the store and buy a new one.

Since heat guns have small motors in terms of power, replacing them is not difficult - first look at the technical data sheet of the machine and buy a new one in a store or order it online.

What problems did your thermal gun suffer from? Tell us in detail in the comments!