Miele Washing Machine PWM 927 [EL DV DD SOM] – 27 kg, 3 AC 480V 60HZ, Stainless steel

Twenty-seven kilograms rated load in a 240 l drum, spun at 1,100 rpm with a g factor of 541, puts the PWM 927 in the main-machine class for a shipboard or offshore laundry. Residual moisture is quoted at 46 % after a cold rinse, 41 % after a hot rinse, and 10 % when processing cleaning cloths, so dryer sizing can be done on numbers rather than assumptions.

The machine is specified and approved for shipboard use and also specified for offshore installations, so it is intended for continuous operation in technical spaces rather than a lightly used shore laundry. Electrical connection is 3 AC 440V 60HZ with electric heating, a heater rating of 22 kW and a total connected load of 23.6 kW, matching the 60 Hz marine distribution that dominates larger vessels. Net weight is 660 kg with a maximum floor load of 9184 N, which gives the designer hard figures for checking deck scantlings and foundations. Heat dissipation into the room is 4.7 MJ/h and the emission sound pressure level is 73 dB(A) re 20 µPa, both important where the laundry shares an HVAC zone with accommodation or workshops.

Water and energy data are explicit enough to feed into fresh-water production and generator loading calculations. On a cold water connection the PWM 927 uses 7.4 l/kg and 0.22 kWh/kg, corresponding to 201 l and 5.9 kW at the full 27 kg load, with a programme duration of 57 minutes. On a hot water connection it uses 7.3 l/kg and 0.06 kWh/kg, or 197.9 l and 1.61 kW, and the programme duration drops to 47 minutes when cold and hot are combined. In the ECO programme the figures are 193.5 l and 4.48 kWh in 42 minutes on cold water, or 190.2 l and 0.58 kWh in 34 minutes on hot and cold combined, so both freshwater draw and energy peaks can be planned into the vessel load profile.

For hygiene-critical work the Mops standard 60 °C programme is quoted separately. With a cold water connection this uses 322.2 l and 6.28 kWh over 57 minutes; with hot water it uses 323.4 l and 2.05 kWh over 48 minutes. Programme running time in minutes for the Mops standard 60 °C programme mirrors those values. Capacity indications extend beyond generic linen: 142 cotton mops at 40 cm / 190 g, 123 cotton mops at 50 cm / 220 g, 225 microfibre mops at 40 cm / 120 g and 159 microfibre mops at 50 cm / 170 g, plus 620 cloths at 22 g. PPE and cabin items are quantified as 19 respirator masks, 6 helmets, 4 overalls, 6 over jackets, 3 chemical protection suits, 3 synthetic duvets, 6 synthetic pillows, 3 down duvets, 6 down pillows and 4 summer horse blankets.

Physically this is a front loader from the Benchmark series in the Performance Plus range with stainless steel front and control panel. External dimensions are 1646 mm high, 1090 mm wide and 1226 mm deep; gross transport dimensions are 1793 mm in height, 1365 mm in width and 1425 mm in depth, with a gross weight of 717 kg. The right-hinged door opens 180 degrees through a 415 mm opening, which sets clearances to bulkheads, adjacent machines and service corridors. Tested operating hours are quoted at 30000.

Build and control

• Automatic door lock
• M Touch Pro Plus control system, freely programmable
• Remaining cycle time display
• Display language switchable at any time
• Detergent drawer with 4 compartments
• Detergent empty sensor
• Three-dimensional imbalance monitoring
• Thermal disinfection rinse programme
• EcoSpeed wash rhythm for reduced water use
• Continuous wash temperature monitoring
• Independently tested virucidal efficacy
• Verified hygiene performance
• Specified and approved for shipboard use
• Specified for offshore installations

This washer is the right choice where the laundry can consistently load 27 kg batches of mops, PPE and linen and where a 23.6 kW connection at 3 AC 440V 60HZ is available. It is the wrong selection for a small crew vessel or a utility room that only ever gathers part loads, because the per-cycle consumptions between 190.2 l and 323.4 l and programme durations up to 57 minutes are then spent on under-filled drums. Ordered under Miele article number 51927005SOM and material number 12887720, designation PWM 927 [EL DV DD SOM].