Electrolux Professional Undercounter Dishwasher 502712 – Undercounter, pressure boiler, double skin, drain pump, detergent & rinse aid dispensers, 720d/h-Mar

6.85 kW of installed power in a 600 x 615 x 820 mm body is what defines the 502712 undercounter dishwasher. Inside that footprint it carries a 6 kW pressure boiler and a quoted 2.5 litres of water consumption per cycle, so both energy and fresh water use sit in a tightly defined band.

On a vessel, the 230 V/3 ph/50 Hz supply and the convertible options of 230V 1N~ or 400V 3N~ make this machine suitable for galleys tied to hotel-style distribution rather than a 440 V ship service. It slots under standard counters, and the 61 dBA noise level matters in open pantry or crew mess installations where warewashing runs in the same space as service or rest. Inlet water pressure is specified between 2 and 3 bar (29–44 psi), which should be checked against the domestic or service water ring at the intended location.

Technically the machine is built around a pressure boiler and a small wash tank. The tank holds 23 litres, heated by a 2 kW element, with wash temperatures set between 55 and 65 °C. Above that sits a 12 litre boiler with 6 kW of heating, lifting 50 °C inlet water to a rinse band of 80–90 °C. That split between tank and boiler power is what allows it to maintain high final-rinse temperatures on a 6.85 kW total load. The wash pump is rated at 0.736 kW, giving a clear indication of the hydraulic side of the system.

Water use is quoted as 0 / 2.5 litres per cycle, with the 2.5 litre figure being the relevant one for sizing the fresh and waste water services. With an inlet water supply temperature of 50 °C, the energy demand on any upstream calorifier is also predictable. The drain line size is 20.5 mm, which is a small but important figure when setting out the connection to the scupper or grey-water system.

Build and control

• IPX4 rated against water ingress
• HACCP data logging
• Digital control display
• Automatic wash cycle
• Built-in drain pump
• Detergent and rinse-aid dispensers
• Double-skin insulated construction

The double-skin insulated construction limits heat and noise radiation into the space, which is valuable in compact pantries or mess rooms where there is no physical separation between wash-up and the rest of the area. HACCP data logging on a small machine like this removes the need for a separate temperature record and simplifies inspection, and the digital control display ties that information to the programmed automatic wash cycle.

This unit is the right choice where an undercounter footprint is mandatory, the electrical supply is 230 V or 400 V, and the warewashing duty is concentrated on glassware, cups and light plates. It is not the right fit for a main galley scullery on a large vessel where throughput and 440 V supply would point towards a hood-type or rack conveyor machine.

Ordered under Electrolux Professional product number 502712.