Making ice

1. Fill a maximum of 1 cm of water into the plastic beaker. Place the beaker on a level surface.
2. Make sure that the detachable tube is tightly fitted to the pump and the adapter and that the cartridge is firmly in place on the adapter.
3. Place the zeolite cartridge and adapter onto the plastic beaker.
4. Pump the vacuum pump briskly but not too fast. Overcome the resistance of the air cushion at the end of each stroke by pushing the plunger as far as it will go.
5. After 2 strokes, check that there are no leaks in the system by briefly lifting the zeolite cartridge. The plastic beaker should sit tightly on the adapter due to the vacuum that has been created.
6. After approx. 10 – 20 strokes, air dissolved in the water bubbles up from the bottom of the beaker. Shortly afterwards, the water begins to simmer (it bubbles). The more air is removed from the system, the more the zeolitesucks in (adsorbs) the water vapour forming above the surface of the water and binds it in its pore structure. Due to the evaporation, the heat of vaporisation is removed from the rest of the liquid water, which therefore cools.
7. After some further strokes, the water calms down and the surface begins to freeze. Swill the beaker and the cartridge back and forth several times so that water comes to the top and then continue pumping. At the same time, large quantities of adsorption heat are released from the zeolite; this can be felt on the outside of the cartridge after about 1 - 2 minutes. By means of a heat exchanger, this heat can be utilized in a special system, for example to heat water or an airstream.
8. The rubber seal on the adapter has an airing tab. Pull it down slightly to let in some air. Air streams in and the beaker can be separated from the system.

With breaks in-between, the procedure can be repeated a total of 8 – 10 times until the adsorbency of the zeolite filling has been exhausted. However, in the meantime the zeolite has to cool down again each time if the adsorption process is to work. Once the zeolite has been saturated with water, it is regenerated by heating.


1. Separate the cartridge and adapter.
2. Unscrew the nut from the tube in the middle of the cartridge and remove the grid.
3. Spread the zeolite granulate evenly on a baking tray and heat it in the oven on the highest setting for at least 2 hours or heat the entire zeolite cartridge with the opening at the top for 3 to 4 hours.
4. After the baking out procedure, cover the zeolite with aluminium foil for example – so that it cannot adsorb any moisture from the air – and let it cool down.
5. In order to refill the zeolite cartridge, cover the tube in the middle of the cartridge and tip the granulate back into the cartridge; then replace the grid and tighten the nut.
6. Check that no zeolite has collected in the tube by turning the cartridge upside down.

The Ice-Quick is now ready to be used again!


The zeolite cartridge must be kept dry when storing the Ice-Quick. Place the empty and dry beaker on top of the adapter – as in the sketch. In normal ambient conditions, the energy stored in the zeolite during regeneration will be stored for long periods without any loss.


The beaker and empty cartridge can be cleaned in a dishwasher. The manual pump should only be cleaned on the outside with a damp cloth. Do not use any aggressive cleaning agents!