Disinfection, Washing, Mixing

HEWA 2600
washing machine with vibration or belt outfeed

A universal washing machine optimized with regard to hygiene and cleaning. For the continuous pre-washing, washing, disinfection and treatment of both cut and whole lettuce, vegetables, herbs and fruit, among others.

600 kg/hMax. capacity
The washing machine HEWA 2600 from KRONEN for the effective, gentle and economic washing of cut and whole products (salad, vegetables, herbs, fruit etc.) up to 600 kg/h.

Your benefits

  • Maximum hygiene and rapid cleaning, including complete dismantlement of the machine
  • Effective and gentle washing thanks 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
  • Continuous washing process – with automatic filling, no operating personnel required
  • Washing, disinfection, mixing and rinsing possible in just one machine

Product groups


Effective, gentle and economical washing of up to 600 kg per hour

The HEWA 2600 is a further development of the GEWA 2600 PLUS. It is optimized with regard to hygiene and a reduced cleaning time, for example thanks to a design with no horizontal surfaces, which allows the water to optimally discharge. What's more, the entire machine can be dismantled for simple and thorough cleaning.

Like the GEWA 2600 PLUS the machine is used for pre-washing, washing, disinfecting, mixing, treating and rinsing lettuce, vegetables and fruit. It can be used flexibly and is usually positioned downstream of a cutting machine between the low-care and high-care area. 

The wash tank is filled either automatically by an infeed belt or manually. Both floating and sinking products are conveyed through the wash tank by the HELICAL washing system in a spiral movement. The flow rate and movement of the water in the wash tank can be adjusted to suit different products. At the end of the wash tank, the product and the water are transported to a vibration or belt outfeed by means of an overflow and sprayed with a fresh water shower. The water flows through a strainer into the pump tank, from which it is pumped back into the wash tank and used again. 

Versatile application options:

  • Lettuce (e.g. baby leaf, iceberg): cut and whole leaves
  • Vegetables: cut and whole 
  • Herbs (e.g. parsley, chives): loose and in bunches
  • Fruit (e.g. pineapple, melon): cut and whole
  • Other leafy products (e.g. spinach), tuber products, pulses and mushrooms, as well as seaweed or kelp

As a result, the HEWA ensures an undamaged, optimally 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.

Note: The video shows the HEWA 3800.

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HEWA 3800 washing machine for lettuce, vegetables, herbs and fruit etc. - KRONEN
The video shows the HEWA 3800V for up to 2.5 t/h.


HEWA 3800 of KRONEN: It is optimized with regard to hygiene and a reduced cleaning time

Maximum hygiene, rapid cleaning and maintenance

The HEWA 2600 is optimized in terms of hygiene and easy cleaning. The machine can be completely dismantled for rapid and thorough cleaning. The design concept also ensures maximum hygiene, for example the fact that the machine has no horizontal surfaces whatsoever, thus allowing the water to optimally discharge. What’s more, all edges are designed to avoid the formation of biofilm. The vibration motors, all pipes, the pump casing, the wash and pump tanks and the covers and switch cabinet are made from AISI 304 stainless steel. (Fig. HEWA 3800)

All HEWA washing machines from KRONEN are available with vibration or belt discharge – which discharge is chosen depends on the product and user’s requirements

Vibration or belt outfeed

The washing machines are available with vibration or belt outfeed. The chosen outfeed depends on the specific requirements. The vibration outfeed ensures preliminary dewatering of the product, sorts out small particles and is easier to clean. Filter strainers with hole sizes of 2, 5, 8 or 10 mm, for example, are available, enabling product-specific adaptations. In addition to the standard version, a version with an outfeed extended by 500 mm is available. A belt outfeed may enable a higher capacity and is more suitable for individual products. What’s more, the machine does not necessarily need to be raised in case of a wash cascade function. (Fig. HEWA 3800)

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 HEWA washing machines 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. (Fig. HEWA 3800)

With its modular, compact design, the HEWA 2600 from KRONEN allows great flexibility and adaptation to individual requirements.

Compact and modular design

Thanks to the HELICAL washing system, the HEWA washing machine is particularly compact. It also has a modular design, which enables the flexible adaptation of the machine to meet requirements in production operations. For example, it is possible to retrofit the air system or other options that can be quickly and easily installed as a kit. 


Lateral fine particle discharge on the HEWA KRONEN 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 removal 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. (Fig. HEWA 3800)

Within the scope of optimal hygienic design, the HEWA of KRONEN can now be optionally fitted with a pressure switch
Pressure switch for water level measurement 

Within the scope of optimal hygienic design, the HEWA can now be optionally fitted with a pressure switch. The device is mounted outside the filter tank so that the tank can be cleaned easily. With the help of the pressure switch, the level of the wash water in the filter tank can be precisely determined, and additional water levels can be set. This simplifies the retrofitting of a water management system (WMS). The pressure switch is already provided as standard when you purchase a WMS. (Fig. HEWA 3800)

The air system of the GEWA washing machines from KRONEN generates air bubbles in the washing tank for an optimum result with leafy and curly products
Air system

The KRONEN air system enables the combination of the benefits of the HELICAL washing system with those of the flotation system. By means of a blower, air is conveyed through a pipe system with a large number of perforations. This pipe system generates air bubbles in the wash tank. Especially in the case of sensitive products such as whole lettuce leaves or difficult products such as curly-leaf parsley or lollo rosso lettuce leaves, the combination of reduced water rotation and the air bubbles provides an optimal result.

Sand trap funnel for GEWA PLUS washing machines from KRONEN especially designed for washing very sandy products such as lamb’s lettuce or shoots
Sand trap funnel for products with a high sand content

A sand trap funnel for GEWA PLUS or HEWA washing machines is recommended when washing heavily soiled products (e.g. lamb's lettuce). It can accommodate 49 liters of the sand-water mixture and can be emptied manually by means of a ball valve or regulated by an automatic flow control. In the second case, the parameters (e.g. opening cycle and duration) can be set so that automatic regular emptying takes place, in combination with the water management system. (Fig. GEWA 4000)

Dwell time function of the GEWA washing machines from KRONEN optimizes hygiene and shelf life thanks to the freely adjustable contact time
Retention time function

The retention time is realized by a retaining flap, which automatically controls how long the products remain in the wash tank. This enables the freely adjustable contact time of the products with the water to be guaranteed when using washing additives. This step forms a fundamental basis for hygiene in further processing. (Fig. GEWA 4000)

The Water Management System of the GEWA PLUS washing machines from KRONEN makes the central filling and draining of the washing tank possible
Water management system (WMS)

The WMS for the GEWA PLUS or HEWA washing machines enables centrally controlled filling and emptying of the washing machines. During operation, an additional level sensor automatically regulates the water level in the washing machine. If the water level drops too low, the pneumatic infeed valves are automatically opened and fresh water is provided. The standard system is comprised of two valves for filling and two for emptying the machine, as well as the necessary pipe system. Other versions are also available on request. The WMS is operated via the switch cabinet. (Fig. GEWA 4000)

Water recycling system for GEWA PLUS washing machines from KRONEN in a processing line uses the washing water several times, thus reducing water consumption
Water recycling system 

The KRONEN Water Recycling System (WRS) is used in washing lines comprised of at least two GEWA or HEWA washing machines. Excess water from the second washing machine is returned to the first washing machine, considerably reducing the overall water consumption. The system makes use of the fact that the first washing machine generally carries the higher dirt and germ load. The water from the second washing machine, which is cleaner, is therefore used to refresh the water cycle.

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

50 - 600 kg/h
Wet disinfection

The capacity depends on factors such as the product.

Electrical power Power 3.1 kW / 3.2 kW (V outfeed / B outfeed)
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 607 l
Dimensions LxWxH 2872 x 1382 x 1675 mm / 3211 x 1381 x 1675 mm (V outfeed / B outfeed)
Weight 455 kg / 465 kg (V outfeed / B outfeed)
Infeed/placement height 1232 mm
Outfeed/delivery height 933 mm / 759 mm (V outfeed / B outfeed)
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.