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Disinfection, Washing, Mixing

HEWA 4000
washing machine with vibration or belt outfeed

A universal washing machine optimized in terms of both hygiene and cleaning – for the continuous pre-washing, washing, disinfection and treatment of both cut and whole lettuce, vegetables, herbs and fruit, among others.

4,000 kg/h Max. capacity

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The washing machine HEWA 4000 from KRONEN for the effective, gentle and economic washing of cut and whole products (salad, vegetables, herbs, fruit etc.) up to 4 t/h.

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Your benefits

Maximum hygiene and rapid cleaning, including easy 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

Portrait

Effective, gentle and economical washing of up to 4,000 kg per hour

The HEWA 4000 is a further development of the GEWA 4000 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 machine can be easily dismantled for thorough and rapid cleaning.

Like the GEWA 4000 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 areas.

The wash tank is filled either automatically via an infeed belt or manually. Both floating and sinking products are conveyed through the wash tank in a spiral movement by the HELICAL washing system. 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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Get information/offer

KRONEN HEWA 4000 washing machine with vibration or belt outfeed — The machine is used for pre-washing, washing, disinfecting, mixing, treating and rinsing lettuce, vegetables and fruit.

HEWA 4000 washing machine from KRONEN with belt outfeed — 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.

Fresh water spray of the HEWA washing machines from KRONEN rinses and cleans the product during discharge out of the machine — A fresh water spray above the discharge belt sprays any residues of the disinfecting agent off the washed product or represents an additional rinsing step with fresh water – at the same time, the washing tank is thus constantly refilled.

HEWA 4000 of KRONEN: The design concept also ensures maximum hygiene. — HEWA 4000 of KRONEN: It is optimized with regard to hygiene and a reduced cleaning time.

HEWA 3800 washing machine for lettuce, vegetables, herbs and fruit etc. - KRONEN

The video shows the HEWA 3800 for up to 2,500 kg/h. The HEWA range of washing machines offers a variety of models for different capacities.

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Benefits

HEWA 4000 of KRONEN: It is optimized with regard to hygiene and a reduced cleaning time

Maximum hygiene, rapid cleaning and maintenance

The HEWA 4000 is optimized in terms of hygiene and easy cleaning. The machine can be easily 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 4000)

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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)

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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.

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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 4000)

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With its compact design, the HEWA 4000 from KRONEN allows great flexibility and adaptation to individual requirements

Compact and flexible design

Thanks to the HELICAL washing system, the HEWA washing machine is particularly compact. The machine can be extended as needed and can therefore be flexibly adapted to meet requirements in production operations, for example by retrofitting its air system or other options.

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Insect and fine particle discharge of the HEWA washing machine from KRONEN – ideally accessible and thus easy to clean

Insect and fine particle removal system

The insect and fine particle system is available in two versions: firstly as a removable, static basket insert for cut, less sensitive products and secondly as a rotary insect removal unit with a drum for more sensitive products and whole leaves. The insect drum can be easily swiveled out of the wash tank, for example for cleaning. It also has an open design for easy access. At the same time, operational safety is guaranteed. (Fig. HEWA 3800)

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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)

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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.

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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.

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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)

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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)

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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)

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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.

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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

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100 - 4,000 kg/h

Capacity

Wet disinfection

The capacity depends on factors such as the product.

Electrical power	Power	10.3 kW / 11.4 kW (V outfeed / B outfeed)
	Voltage	3~400 V N/PE
	Frequency	50 Hz
Water	Fresh water connection	2 3/4 inch (GEKA coupling)
	Water drainage	2 x 2"
	Total volumes	1505 l
Dimensions	LxWxH	4110 x 1799 x 2188 mm / 4277 x 1858 x 2188 mm (V outfeed / B outfeed)
	Weight	905 kg / 935 kg (V outfeed / B outfeed)
	Infeed/placement height	1232 mm
	Outfeed/delivery height	928 mm / 775 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.