Disinfection, Washing, Mixing

GEWA XL washing machine with belt outfeed

The high-performance washing machine is used for the continuous pre-washing, washing, disinfection and treatment of lettuce, vegetables, herbs and fruits, among others. It sets new standards in terms of hygienic design and cleaning. The GEWA XL is positioned in the processing line upstream of a drying system such as the K850 and can be combined with a pre-washing machine such as the GEWA AF.

5,000 kg/hMax. capacity
The washing machine GEWA XL from KRONEN is setting new standards in hygiene – wash extremely large capacities effectively, gently and economically: cut and whole products (salad, vegetables, herbs, fruit etc.) up to 5 t/h.

Your benefits

  • Very high capacities of up to 5,000 kg/h possible in the XL wash tank
  • Effective and gentle washing due to the HELICAL washing system 
  • The HELICAL washing system makes the machine versatile and space-saving
  • Reduced water consumption with perfect washing results
  • Optimal separation of foreign objects, for example sand, stones and insects
  • Washing, disinfection, mixing and rinsing possible in one machine

Product groups


Wash very large quantities with the latest hygiene standards: up to 5,000 kg of product per hour

The further developed GEWA XL is a high-performance washing machine suitable for use in industrial applications and for washing very large quantities of lettuce, vegetables and fruit. The capacity depends on the product: for example, up to 1,500 kg of baby leaf and up to 5,000 kg of iceberg lettuce can be processed per hour. The standard equipment of the GEWA XL includes a highly effective, gentle emergence module, the XL wash tank with the HELICAL system, a lateral fine particle removal drum and an optional insect removal module with an extended contact area.

Both floating and sinking products are conveyed through the wash tank by the HELICAL washing system in a spiral movement. At the end of the wash tank, the product and the water are transported to a belt outfeed by means of an overflow and sprayed with a fresh water shower. The water flows through a lateral fine particle drum with a slotted strainer into the pump tank, from which it is pumped back into the wash tank. Finally, the products are already pre-dewatered for further processing with a suction blower, and an air knife system on the outfeed belt ensures an effective and gentle transfer.

The GEWA XL is designed for use in a large production line and can be combined, for example, with the GEWA AFpre-washing machine and theK850 drying system.

Versatile application options:

  • Lettuce (e.g. baby leaf, iceberg): cut and whole leaves
  • Salad mixes with non-floating products, such as carrot sticks
  • Vegetables: whole or cut  
  • Herbs (e.g. parsley, chives): loose
  • Fruit (e.g. mango): whole or cut 
  • Other leafy products (e.g. spinach), tuber products, pulses and mushrooms, as well as seaweed or kelp

As a result, GEWA ensures an undamaged, optionally cleaned product that, if necessary, has been disinfected with a washing additive. In addition, the product can be efficiently mixed (e.g. mixed salads) and cooled down by the washing process.

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GEWA XL - Excellent washing results for large quantities of salad
Salads, e.g. Iceberg up to 5 t / h or Babyleaf up to 1.5 t / h are washed by a rotating washing system in a high-performance and gentle manner.
GEWA-XL: Watercress washing process
Gentle washing process guarantees a high product quality, even with delicate products such as watercress. The trial proofs successful application and was conducted by KRONEN for an individual customer request.
High capacity salad and leafy vegetables processing line - teaser
The innovative processing line is technically state-of-the-art and sets new standards especially in the field of hygiene. The line is designed for large-scale industrial processing. It includes the GEWA XL and GEWA AF washing machines, the latest washing technology, and the K850 drying system, a system for gentle drying. In the line, these are combined with machines from KRONEN partners Synergy Systems, HiTec and Optimum.
Automated processing line for salad & leafy vegetables with high capacity & new washing technology
The innovative processing line processes up to 1,000 kg of baby leaf lettuce or the equivalent amount of mixed lettuce or leafy vegetables per hour. The highlights of this processing line include • the GEWA AF pre-washing machine, a new development by KRONEN; • the further developed GEWA XL helical washing machine; and • the K850 drying system, a further development of KRONEN’s K650 model.
High-capacity processing line for salad and leafy vegetables – brief overview
We present a brief overview of the production line for processing up to 1 t of baby leaf or the corresponding amount of mixed salad or leafy vegetables per hour. The innovative processing line is technically state-of-the-art and sets new standards especially in the field of hygiene. The line is designed for industrial processing on a large scale. It can process up to 1,000 kg baby leaf or the corresponding amount of mixed salad or leafy vegetables per hour. It includes the latest washing technology in the form of GEWA XL and GEWA AF washing machines and the drying system K850 for gentle drying. In the line, these are combined with machines from KRONEN parters Synergy Systems, Hitec and Optimum. Further information: https://www.kronen.eu/de/anlagen/sl-gewa-af-gewa-xl/anlagen-portrait


GEWA AF and XL from KRONEN: the product coated in water slides via a water chute into the wash tank

Water chute for gentle product infeed

The submergence module places the product underwater with no additional mechanical stress. The product falls onto a water chute where it is surrounded by water from all sides. Safely packed in the water, the product then slides into the wash tank. No mechanical or even powered installations are necessary to submerge the product.

The GEWA HELICAL washing system from KRONEN guarantees effective, gentle washing and reduces water consumption and space requirement

Highly effective, gentle HELICAL washing system

KRONEN’s HELICAL washing system ensures that the product travels along a spiral-shaped route in the wash tank that is up to ten times longer than the wash tank. Due to the ideal distribution, the product is loosened up and constantly rinsed completely during the cleaning process. Products are therefore washed thoroughly and gently, water consumption is considerably reduced, and the machine is ideal for a wide range of applications.

Sand trap in the GEWA XL washing machine from KRONEN for loosened dirt and sand supports the perfect washing result

Sand trap sedimentation unit

The sand trap integrated into the wash tank separates the loosened heavy dirt (e.g. small stones) and sand from the product flow. Dirt and sand settle in the sand trap at the bottom of the wash tank and are not discharged from the wash tank with the product.

Lateral fine particle discharge on the GEWA XL washing machine protects the pumps and makes continual work possible, even with products that foam and contain many small parts

Lateral fine particle removal drum

The lateral fine particle drum with a slotted strainer opening of 0.5 mm filters particles out of the circulating wash water. It enables continuous operation without blocking the filter above the pump tank and protects the pumps. This is particularly important for products that foam and contain many small particles.

GEWA XL washing machine from KRONEN with optimum design for high standards of hygiene as well as simple and fast cleaning and maintenance – e.g. through an optional clean-in-place system (CIP)

The latest hygiene standards

When it comes to hygienic design, the GEWA XL sets new standards. It can be completely disassembled, ensuring access to the entire machine for easy cleaning and maintenance. In order to clean the pipe system without needing to disassemble it and to ensure the lowest possible water consumption, a clean-n-place system can also be integrated as an option. All pipes, the pump casing, the wash and pump tanks and the covers and switch cabinet are made from AISI 304 stainless steel. 


Insect and fine particle discharge of the GEWA XL washing machine from KRONEN – with extended contact surface as well as ideally accessible and thus easy to clean
Insect discharge with extended contact area

The insect discharge consists of a specially perforated removable sheet metal channel. Due to the rotation of the water in the GEWA XL, the wash water is guided to and into the insect channel. The insects and fine particles are discharged from the channel by means of a water flow.

Cleaning trolley for the lateral fine particle removal drum

The trolley makes it easier to clean GEWA and HEWA washing machines. The lateral fine particle removal drum can be taken out of the machine and placed on the mobile trolley, on which it is easy to transport and clean.

KRONEN SMART Factory, SMART Machines: In future, wherever production managers, technicians or foremen might be, they can check the production status of the machine or line on a laptop or mobile end device at any time
SMART Solutions for intelligent, networked production

KRONEN uses its SMART option to provide communication-enabled machines and processing lines. Wherever production managers, technicians or foremen might be, they can use these solutions to check the production status of a machine or line on their laptop or mobile device at any time. The collected data can be used to make production processes even more transparent and efficient, for example with regard to productivity, flexibility, quality and safety. Do you have special requirements? We can develop an individual, tailor-made solution for you.

SMART Solutions

500 - 5,000 kg/h
Wet disinfection

The capacity depends on factors such as the product.

Electrical power Power 19 kW
Voltage 3~400 V N/PE
Frequency 50 Hz
Water Fresh water connection 3/4 inch (GEKA coupling)
Water drainage 2 x 2"
Total volumes 2600 l
Air Working pressure 6 bar
Dimensions LxWxH 5644 x 2487 x 1921 mm
Weight 1580 kg
Infeed/placement height 1790 mm
Outfeed/delivery height 973 mm
The data indicated are standard information. In addition, adaptation to other supply networks (e.g. 230V/60 Hz) is optionally possible (except for manual and pneumatic machines). Subject to changes.

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Machine illustrations can include special accessories.