ASU - Automatic Start Up
Isotherm ASU charges the holding plate while the engine is running
The patented ASU system has now been available for more than 20 years and has been installed on tens of thousands of boats worldwide. The ASU system starts the compressor when the engine is running and the power is available to freeze the holding plate completely. The energy stored in the holding plate will keep the refrigerator cool for many hours. When the engine is stopped, the compressor will not restart until the cold stored in the plate is all consumed. Once the stored cold is completely consumed, the compressor starts to run for short periods to maintain the required temperature in the box. With its unique principle of operation – the patented ASU “Automatic Start Up” system – Isotherm ASU has an important competitive advantage over traditional refrigerators.
ASU – Automatic Start Up
This unique system is designed to start the compressor up to 75 % of its performance mainly when the engine is running and plenty of power is available. Using a powerful compressor (a three-phase compressor with full-range speed control) is highly recommended as it achieves a quicker freezing of the holding plate. By taking advantage of the surplus energy generated by the alternator when the engine is running, the ASU feature does not reduce the engine’s effectiveness.
Frost-Free
Frost-free – Award winning technology
The Indel Webasto Marine frost-free concept provides structural features which prevent the accumulation of ice inside the freezer which therefore avoids an increase in energy consumption. All models equipped with the frost-free concept are extremely economical and save energy on board.
Convincing facts for the frost-free concept:
- Exclusive Indel Webasto Marine technology for the marine market
- No ice accumulation for an excellent efficiency increase
- Exceptional cooling achievement: the refrigerator and the freezer reach the set temperature faster
- Stable inside temperature
- Manual defrosting becomes redundant
- No more unpleasant water pools resulting from incorrect manual defrosting
