I opened the case of an old heater: I advise everyone to look there
In most of Russia, the heating season is about to start, which means it's time for residents of private houses stock up on firewood, coal, and if you heat the house with electricity, it will not be superfluous to arrange an audit heaters.
Personally, I've already removed the housings from all of my oil coolers. By the way, this was the first time in 20 years. I share photos of what I saw, and at the end of the article I will tell you what the lack of prevention is fraught with:
1) Terminal blocks.
In old heaters, the wires are connected with simple screw terminal blocks. It is a good idea to tighten the screws and tug lightly on the lead wires to make sure they are securely fastened. Also inspect the insulation for damage.
2) Dust. A lot of dust. A lot of dust.
For twenty years of operation, a lot of dust has got into the heater through seemingly small ventilation holes. Everything would be fine, but the dust is very flammable and flammable. It is enough for any metal element to heat up to 80-90 degrees, as dust can blaze.
For preventive purposes, I advise everyone to remove all dust from heating devices at least once every 2-3 years:
Inspection and cleaning of each heater takes no more than 10 minutes in time, but makes their operation much safer in winter.