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Kees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso Machine front view
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Kees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso Machine

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$29,999
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Group size: 2 Group

In stock Freight delivery $299

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Key specs

2 groupsGroup heads
Multi-boilerBoiler system
Needs a Three phase Normal: 8.9 / 8.9 / 11.0 A; single phase Normal: 26.9 A, 220-240 V circuitPower · 6180 W Normal, 7380 W High Power (peak, no pump)
Plumbed in: water line + drainWater
10.5 L, insulated 316L stainless steel (4800 W Normal, 6000 W High Power) steam boilerSteam
PID per coffee boiler; Eco mode programmable per dayTemperature control
See all specs ↓

About the Kees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso Machine

The Kees van der Westen Slim Jim Idrocompresso Duette is a 2 group multiple boiler lever espresso machine. Kees van der Westen re-developed the classic spring lever group, solving its drawbacks: each group has its own PID controlled boiler, an automatic relief valve that ends the portafilter sneeze, and a small lever to flush or stop extraction.

Key Features

  • Spring lever groups with the cylinder completely surrounded by brew water for excellent temperature stability
  • One PID controlled coffee boiler per group, fed with water pre-heated by a large thermosyphon heat exchanger
  • Automatic relief valve: no portafilter sneeze, ready for the next shot straight away
  • Small extra lever per group to flush the screen or stop extraction at any time
  • Adjustable spring pressure, regulating valve for infusion pressure, and a locking mechanism against lever bounce
  • Shot timer that starts and stops with every pull and a pressure gauge per group
  • Two hot water temperatures, electric cup heater, insulated 10.5 L steam boiler; custom RAL colours available

Specifications

  • Coffee boilers: 0.8 L per group, 450 W each; steam boiler: 10.5 L insulated
  • Power: 220-240 V, 50 or 60 Hz, single or three phase; peak 6180 W Normal, 7380 W High Power (no pump)
  • Same footprint for the 2 and 3 group; weight about 125 kg (276 lb)

Installation

Plumbed-in commercial machine for 220-240 V. It needs a water supply from a water treatment system and a drain with a trap within 1.5 m (5 ft). Professional installation is recommended; see the installation guide under Documents. Also available as the Slim Jim Idrocompresso Triplette and as the Slim Jim with Bastone activation. See all Kees van der Westen espresso machines.

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Specifications
Brewing
Group heads2
Boiler systemMulti-Boiler
Coffee boiler capacity0.8 L per group, 316L stainless steel (450 W each)
Steam boiler capacity10.5 L, insulated 316L stainless steel (4800 W Normal, 6000 W High Power)
Group headSpring lever group, cylinder surrounded by brew water; locking mechanism against lever bounce
Temperature controlPID per coffee boiler; Eco mode programmable per day
PumpMains pressure with regulating valve for infusion pressure; pump optional
Water sourcePlumbed
Dosing and flow controlSpring lever with adjustable spring pressure; automatic relief valve (no sneeze); small lever to flush or stop extraction
Features
DisplayShot timer that starts and stops with every pull; pressure gauge per group
Physical Measurements
Net weight276.0 lb
Power
Voltage220-240 V
Frequency50 or 60 Hz
Wattage6180 W Normal, 7380 W High Power (peak, no pump)
AmperageThree phase Normal: 8.9 / 8.9 / 11.0 A; single phase Normal: 26.9 A
Model & Series
SeriesSlim Jim Idrocompresso
More specs
Hot waterTwo temperatures: mixed and boiling
Steam valveTulip knob standard; flip-flop lever or foot valve optional
Cup heaterElectric, adjustable
Power versionsNormal or High Power, single or three phase
DimensionsSame footprint for 2 and 3 group, see installation guide

Manuals & downloads4
ManualKees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso MachineInstallation GuideKees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso MachineSpare PartsKees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso MachineTechnical DataAll Kees van der Westen models

Questions about the Kees van der Westen Slim Jim Idrocompresso Duette 2 Group Lever Espresso Machine6
What is the difference between the Slim Jim and the Slim Jim Idrocompresso?

Both are multiple boiler machines on the Slim Jim platform, with a PID controlled coffee boiler of about 0.8 L per group and an insulated 10.5 L steam boiler. The Slim Jim is activated by Bastone or touchpad and uses a double spring progressive pre-infusion cylinder.

The Idrocompresso is a lever machine: each group has a spring lever with adjustable spring pressure, an automatic relief valve that prevents the portafilter sneeze, and a small extra lever to flush the group screen or stop extraction at any time.

How is the extraction pressure adjusted on the Slim Jim Idrocompresso?

Extraction pressure is adjusted by turning a disc on top of the spring, with a small tool that comes with the machine. A regulating valve adjusts the infusion pressure; if the mains water pressure is not reliably stable, a pump is available as an option.

What is the High Power version of the Slim Jim?

The Slim Jim and Slim Jim Idrocompresso are offered in a Normal and a High Power version. The Normal version has 4800 W of steam boiler heating power, the High Power version 6000 W. Both run on 220-240 V, 50 or 60 Hz, in single phase or three phase.

Can a Kees van der Westen machine be built in a custom colour?

Yes. Kees van der Westen offers on all its machines the option to have the body work powder coated in a RAL colour of your choice, in a smooth or textured finish and in gloss, silk or matt. On many models the frame can be finished in a different colour too. Custom machines are built on request, so details can vary per build and are agreed when the machine is ordered.

What electrical supply do Kees van der Westen machines need?

The Spirit, Slim Jim, Slim Jim Idrocompresso, Mirage and Speedster are specified for 220-240 V. Depending on the model and power version they run on single phase or three phase; no 110-120 V version is listed for these models.

Check the model's pre-installation guide and have a licensed electrician prepare a dedicated circuit before the machine arrives.

What water and drain connections are needed?

These machines are plumbed in. The water supply should come from a water treatment system within 1.5 m (5 ft) of the machine; the supplied water hose has a 3/8 in nut connector. The drain should also be within 1.5 m and fitted with a trap, with a minimum internal diameter of 25 mm (1 in) for the Speedster, 32 mm for the Slim Jim models and 40 mm (1.5 in) for the Spirit. Leave space nearby for the water pump and its motor. The Mirage requirements are in its pre-installation guide.

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