USER MANUAL
Speedster
page 12
Hot water
A three-way toggle switch, located on the right hand side between the brew lever and the hot water
tap, controls the hot-water distribution (see
Figure U 3
). The tap knob itself is purely visual and has no
operational function.
Figure U 3. Hot water: toggle switch, tap knob and hot water spout.
When the switch is pushed downwards the machine will automatically mix a small amount of cold
water with hot water from the steam boiler. The main advantage is that the result is a steady, non-
sputtering, flow of hot water. The addition of cold water has as extra advantage that less water from
the steam boiler is used for the same amount of liquid thus diminishing the load on the steam boiler
heating element.
When the switch is pulled upwards no cold water is mixed with hot water from the steam boiler. In this
position near-boiling water with some steam leaves the spout.
The steam boiler will re-fill automatically, also activating the pump. A flow restrictor with an opening of
0.6 mm diameter regulates the inflow such that the heating element can warm the incoming water as
efficiently as possible.
Although the boiler will not fill when a shot is pulled as not to disturb the process of espresso
extraction by a fluctuating water pressure it is possible to draw (mix-) water from the tap while brewing.
When drawing mix-water while brewing, brew pressure will decrease a little as water can also flow to
the hot water spout. It is up to the barista to make the decision if such small pressure drop is
acceptable or that hot water dispensing should wait for the brew to finish.
off
hot (85-95
°
C)
very hot (>100
°
C)
toggle switch
spout
tap knob;
no function
