Electrolux 510705 (EFT4) manual Functional Zones, Construction, Operation, Warewashing

Warewashing

EFT4 - 4 Tank Flight Type Dishwasher

Functional Zones:

Considerable reduction in detergent consumption is achieved by diverting part of the fresh rinsed water (220litres/hour) to the pre-wash tank, with the remaining being used for the regeneration of the main wash tank. The water that is diverted to the pre-wash tank is then pumped to both the upper and the lower arms to pre-clean the soiled products, ensuring that larger food particles and liquid residues such as gravy and sauces are washed from the items, thereby reducing greatly the soil level on the items entering the machine’s main wash tank. An optional Eco pre-scrap arm positioned just after the inlet in the pre-wash tank, will immediately start to “soften” and “wet” items as they enter the machine so it is especially useful to wash heavily soiled items or when the machine is used mainly on fast speed.

The water in the main wash tanks is pumped with detergent and is sprayed over the items from both the upper and the lower wash arms, guaranteeing a uniform distribution of the washing solution and allowing all the areas of the washing chambers to be covered. An option of variable pressure gives the possibility to increase up to 30% the pressure towards the lower wash arms and at the same time to slow down the belt speed in order to better wash boxes or heavily soiled items.

Rinse area equipped with the DUO-rinse system: the first rinse arm is filled with re-circulated rinse water to eliminate any trace of detergent, while the second ramp is filled with hot clean water to guarantee the sanitation of the items.

A drying section with inspection door (1100 mm wide) will be provided as an integral part of the machine. This allows the operator to remove practically dried items immediately, without them being too hot to handle.

Optional Energy Saving Device (ESD) utilizes heat and steam generated from the machine to pre-heat the incoming water. This reduces energy consumption by 13 kWh by eliminating the need for an external boiler or water heater and allows the machine to be supplied with cold water up to 10° C. In addition, the double pipe in the optional Water Heat Exchanger will have a further energy saving of about 2 kWh as a result of the exchange in temperature between the used rinse water and the incoming fresh water.

Thanks to the Energy Saving Device, the outgoing air from the machine will be cooler and less humid, eliminating the need for a ventilation hood, if the incoming water is about 10 °C and the room has frequent air changes or is well ventilated.

Optional Heat pump operating in conjunction with the Energy Saving Device plus the Water Heat Exchanger, will heat up incoming cold final rinse water up to 65 °C before entering the boiler.

The introduction of the Heat pump system allows 19 kWh of energy savings; also the heating element in the boiler can also be reduced by 8kW. The exhaust air will be cooled down to about 15°C with very low humidity so that no ventilation hood is needed over the machine.

Construction:

304 AISI stainless steel frame, door, strainers, wash and rinse arms.

No legs in loading area (700-1.100 mm).

Wash tanks in 316 AISI acid proof stainless steel with rounded corners to facilitate cleaning.

Double-skinned construction and insulated counter balanced doors provide silent operation and low heat emission.

Wash/rinse arms and filters easy to remove.

Double tank filters (flat and deep box) cover the entire width of the wash tank.

Simple service from the front.

Operation:

The conveyor belt is driven by means of a gear motor which will be protected against overcharge (as a result of blockage or for any other impediment), by a safety device mounted at the end of the unloading side.

Individual drain valves for each tank. Drain valves are automatically closed when the door is closed, so there is no risk of tank filling with open drain valves.

Counter balanced doors with safety switch and easy-to- grip handle.

The machine incorporates a safety stop switch at the top of the discharge section which will automatically stop the conveyor in case that dishes, trays, containers, etc… have not been removed after cleaning.

Flat panel with electronic control that, thanks to the auto diagnostic control and the 32 digits window, is able to communicate in every moment, the working conditions of the appliance.

Electronic control panel incorporates the plug-in connection to link basic and integrated HACCP systems.

Pre-arrangements for external automatic detergent dispenser.

Two speeds, a fast speed for normal soiled items and a slow speed for heavily soiled items. As option the machine can be equipped with three variable speed selector: normal speed, slow speed for heavily soiled items and a third speed for 2 minute contact time according to DIN 10510. Each speed is individually adjustable.