Miele Tumble Dryer PDR 918 [EL SOM] – 3N AC 400V 50/60HZ, Stainless steel

Eighteen kilograms at a 1:18 load ratio in a 325 litre drum places the PDR 918 [EL SOM] in the upper end of a shipboard laundry. That capacity sits on a 23 minute programme duration with residual moisture control, so each 18 kg batch is driven to a target dryness level rather than a fixed time.

On board, the electrical and HVAC numbers are as important as throughput. This Benchmark Performance Plus front loader is specified for offshore installations and approved for shipboard use, and it runs on a 3N AC 400V 50/60HZ supply with a total connected load of 18.6 kW, an 18 kW electric heater rating and a 35 A fuse rating. Maximum evaporation capacity is 18.5 l/hour and heat dissipation into the room is 4.5 MJ/h, both of which go directly into the ventilation and dehumidification calculation. A maximum floor load of 1967 N and a net weight of 173.5 kg mean the deck and any raised foundations can be checked against explicit data.

The cabinet stands 1400 mm high, 906 mm wide and 1035 mm deep. Gross transport dimensions of 1526 mm in height, 1090 mm in width and 1125 mm in depth matter when the unit has to pass through doors and corridors into the laundry. The construction type is a front loader with a stainless steel front, a 520 mm diameter door opening, a 180 degree door opening angle and a left-hand hinge, which eases loading of bulky items at the 13 kg (1:25) or 18 kg (1:18) load sizes.

The drying system is exhaust air. That choice underpins the specific energy consumption figure of 0.52 kWh/kg and the 23 minute programme duration, but it also means the exhaust duct routing and make-up air path must be designed consciously into the vessel. Emission sound pressure at the workplace is specified as 50 dB(A) re 20 µPa, which helps where the laundry is adjacent to accommodation. Service life is stated at 40000 drying cycles, and the recycling rate is 94%, so both operational lifetime and end-of-life material recovery are quantified.

The loading examples show the range of work the PDR 918 can cover beyond everyday clothing. At one load it will process 295 cloths at 22 g, or 108 microfibre mops at 40 cm, or 76 microfibre mops at 50 cm. Other listed examples include 186 office mops at 100 g, 144 stairway mops at 150 g, 12 respirator masks, 2 overalls, 3 over jackets, 3 synthetic pillows, 3 down pillows, 1 synthetic duvet, 1 down duvet and 3 summer horse blankets. For a hotel-ship or offshore unit this allows housekeeping textiles, technical cleaning items and personal laundry to be scheduled across the same 18 kg capacity.

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 electric exhaust‑air model is the right choice where the vessel can support an 18.6 kW, 3N AC 400V 50/60HZ supply and has a defined route for the exhaust duct. It is the wrong choice for laundries that have no viable way to run ducting or where the electrical design cannot release a 35 A circuit and a 1967 N floor load to a single dryer and must look at smaller, lighter units. Ordered under Miele article number 52918002SOM / material number 11895270.