Water flows from a storage container in the machine to find its own level in the ice making cylinder. The cylinder is surrounded by an evaporating coil, so that the water is frozen on the inside of the cylinder with an evaporation temperature of -12°C to -30°C. The ice is then removed from the cylinder wall in a thin layer by a worm which revolves inside the cylinder and pushes the ice upwards. Here it is pressed hard, frozen and then broken off and ejected.

This method allows the new incoming water to be frozen without loss of cooling capacity (if the ice thickness was 1or 2 mm, its insulating capacity would demand more energy for freezing). Because the ice is thickened and squeezed at the next stage one achieves with minimum energy input an ideal ice thickness of 6 to 8 mm.

The machines are designed for long and reliable service. By means of the patented ice cylinder and ZIEGRA know-how compressor capacity is so well used that the power requirement is low.

Emphasis is placed on a very low noise level and minimum vibration.

Because the ice is produced on the inside of the cylinder the refrigeration system on the Ziegra machines is competely sealed. Refrigerant losses due to rotating parts in the refrigeration system cannot occur.

Quality control

Only high quality tested parts are used. On completion, every machine undergoes a thorough quality-check, where it is tested in every detail.

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