Elegant engineering for superior temperature control

The GB5 has redefined the standard for temperature stability in modern espresso equipment.
A dynamic preheater assembly ensures that water entering the coffee boiler is at precisely 170 degrees. 170-degree water replaces the hot water exiting the group, reducing temperature swings in the coffee boiler. An algorithm-based PID temperature controller further reduces temperature fluctuation in the coffee boiler. A group cap designed by Piero Bambi and an integrated ruby flow restrictor reduces channeling and ensures that water never leaves the saturated area of the coffee boiler; this eliminates the introduction of temperature instability during the brewing process.

General Documents

GB5 Installation Guide
GB5 & FB80 Installation Template
Parts Catalog

Preventative Maintenance

GB5 3 Month
GB5 6 Month
GB5 9 Month
GB5 1 Year


Clean Auto Fill Probe:
Rebuild Steam Valves:
Rebuild MP Valve:
Inspect Water Inlet Valve:
Replace Group Gaskets/Diffuser Screens/Portafilter Baskets:
Inspect Vacuum Breaker:
Inspect Drain System for Leaks and Clogs:
Inspect and Clean Steam Boiler Temp Probe:
Test Flowmeter’s Ohm Value:
Check Brew Temp and Flowrate:
Check All Switches for Proper Operation:
Check Shot Volume:
Inspect Group Valve Plungers:
Check that Brew Pressure is at 9 Bar:
Check/Note Water Hardness:
Replace Overpressure Valve: