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Sanremo Cafe Racer 2 Group

Technical reference notes for the espresso machine served by the Juliet Coffee Water System.

The key water-system requirement is simple: the Cafe Racer expects an incoming water line between 29 and 65 psi (2-4.5 bar). The JCWS distribution side needs to keep treated water inside that pressure window while also meeting the machine's flow demand.

Build And Materials​

  • Pure steel groups: Each group is made of AISI 316L stainless steel and weighs 17.6 lb (8 kg), providing high thermal inertia.
  • Boilers: AISI 316L stainless steel.
  • Portafilters: AISI 316 stainless steel.
  • Steam wands: "Cold Touch" AISI 316L stainless steel wands.

Heating Architecture​

The Cafe Racer uses a multi-boiler system with four points of temperature PID control.

ComponentCapacityPowerNotes
Preheating boiler0.264 US gal / 1.0 L1.0 kWHeats water to 180-185 deg F before it reaches the groups
Group boilers0.132 US gal / 0.5 L each1.6 kW eachOne dedicated boiler per group
Steam boiler2.11 US gal / 8.0 L3.85 kWSteam and hot-water service

The machine also includes dry heating elements above the portafilters to help maintain temperature through extraction.

Power And Controls​

  • Independent heating legs: The steam boiler element has three independent legs controlled by the machine computer.
  • Programmable amperage: The 2-group model can be configured between 25 A and 40 A, with approximately 7.03 kW total power input.
  • Electronic pressure switch: Holds steam pressure with 0.02 bar sensor precision.

Extraction And Volumetrics​

  • Programmable pre-infusion: Flowactive System control with 0.1 second timing resolution.
  • Per-group profiles: Four profiles can be programmed for each group.
  • Independent pre-infusion solenoid: 25-30 mL per 30 seconds.
  • Volumetric pump: Rated at 79.3 US gal/h (300 L/h), enough to maintain pressure while both groups operate.
  • Flow meter: Four-magnet impeller for coffee-dose measurement.

Maintenance And Interface​

  • System display: Shows real-time temperatures, pressures, and levels.
  • Scheduled maintenance: Can be programmed by liters used or number of coffees dispensed.
  • Auto-diagnosis: Includes statistical data collection and automatic cleaning cycles.