Miele Tumble Dryer PDR 928 [EL SOM] – 3 AC 230V 50/60HZ, Stainless steel

A 500 litre drum and a 28 kg load at a 1:18 ratio put the Miele PDR 928 [EL SOM] into the heavy end of the Benchmark Performance Plus series. With a quoted 24 minute programme duration and specific energy consumption of 0.51 kWh/kg, it is dimensioned for fast, repeatable cycles in a professional marine or offshore laundry.

On a vessel or offshore unit, drying capacity is constrained by how much moisture and heat the HVAC plant can remove from a sealed space. This exhaust-air machine evaporates up to 27.2 litres of water per hour, with heat dissipation into the room of 3.3 MJ/h. Those figures, together with an emission sound pressure level of 58 dB(A) re 20 µPa, go straight into the ventilation and acoustic calculations for a shared laundry adjoining cabins or work spaces. The stated service life of 40000 drying cycles is a planning figure for lifetime throughput when the dryer runs day after day.

Electrically, the unit is supplied as 3 AC 230V 50/60HZ with a total connected load of 28.2 kW and an 80 A fuse rating. The electric heater rating of 27 kW means this dryer is a substantial step load on a 230 V three-phase distribution, so breaker sizing, cable runs and switchboard capacity need to be locked in with the yard or platform designer at the laundry layout stage. The ability to tie the dryer into a peak-load or energy management system allows its operation to be sequenced against other large consumers rather than left unmanaged.

Physically, the front loader layout with a 520 mm door opening and 180 degree swing on a left hinge makes loading straightforward from bags or trolleys. External dimensions of 1640 × 1206 × 1019 mm and a maximum floor load of 2799 N define the footprint and any plinth or deck reinforcement the naval architect has to provide. Net weight is 243.3 kg and gross weight 258 kg, so access routes from the quay to the laundry and any intermediate lifts or hatches must be checked against these numbers.

Capacity examples are useful when matching the machine to the vessel’s textile mix. At a 1:25 load ratio the dryer takes 20 kg, and the published examples range from 545 cloths at 22 g, 266 office mops at 100 g or 178 stairway mops at 150 g to 12 respirator masks, 3 overalls, 3 summer horse blankets, 2 synthetic duvets, 2 down duvets, 5 over jackets, 3 synthetic pillows and 5 down pillows. That range shows how a single cycle can clear a sizeable batch of cabin linen, PPE or cleaning textiles.

The M Touch Pro control system with residual moisture control and full programmability underpins that flexibility. The user interface is residual moisture controlled so textiles come out at the target dryness without manual checking, and the remaining cycle time display lets crew coordinate loading and unloading with other duties in the laundry.

Build and control

• Specified for offshore installations
• Specified and approved for shipboard use
• Remaining cycle time display
• Communication slot for network modules
• Prepared for a payment system (self-service laundries)
• Optical service interface for diagnostics
• Can be tied into a peak-load / energy management system
• WiFi networking
• Connector Box for external systems

This dryer is the right choice where there is a continuous flow of linen, PPE and mops and where the shipboard or offshore electrical system can comfortably supply 28.2 kW at 3 AC 230V 50/60HZ with an 80 A fuse. It is the wrong choice for a small crew laundry with infrequent, light loads or limited electrical reserve, where the 500 litre drum, 28 kg loading and 27 kW heater will not be used effectively. Ordered under Miele article number 52928015SOM with material number 11934830.