In the video below you can watch a vibration massage session for our refrigerator.

The motorhome is equipped with a German Dometic absorption refrigerator. Absorption refrigerators were historically the first on the market, even before the invention of the familiar compressor refrigerators. Representatives of the older (very older) generation could find old Soviet Morozko refrigerators. This is what they are. Later, in everyday life, compressor refrigerators completely replaced absorption refrigerators due to their higher performance and maintainability. But in some places absorption refrigerators are still used, and here's why.

Their device is as simple as possible. There is a closed circuit with a special refrigerant (aqueous ammonia solution, hydrogen, anti-corrosion additives). In one place this circuit is heated by something, and in another place evaporation and cooling occurs. There are no moving parts, no mechanisms, almost nothing to break. And the most important thing is that any heat source is suitable for work: electricity, gas from a cylinder, or even a wax candle. That is why such refrigerators are still popular where there is no access to a 220 volt network: on yachts, in motorhomes, in remote areas. They can run on gas - that's the whole point.

But if an absorption refrigerator sits idle for several months, the refrigerant in the circuit begins to delaminate and cause corrosion of the tubes. The tubes become clogged and circulation is disrupted. Doesn't cool :(

For more than a hundred years of history of this technology, humanity has not come up with anything smarter to solve this problem than turning the refrigerator upside down, shaking it with all its might and hitting it on the backside with a wooden stick. It sounds like a joke, but it’s true: we take a modern German unit for 400 euros, turn it over, bludgeon it with a log, tie it to a running gas generator for several hours, and, lo and behold, this capricious bastard works again!