ELEKTRA Espresso Equipment Training Program Download Page 6

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2.ESPRESSO EQUIPMENT

Automatic and
Semi-automatic

will take for the water to be
dispensed. The amount of water
for each type of coffee drink is
factory set, and can only be
changed by a technician.

A Semi-automatic

machine has

either pushbuttons or levers to
control the group head water flow
for making coffee. The levers on a
semiautomatic machine operate
internal switches, so flicking a
lever has the same action as
pressing a button. The water flow
is not measured by the machine,
so the barista has to turn off the
flow when the cup (or cups) con-
tains the right level of extracted
coffee.

This version of the
Elektra Classic
is an

Automatic

machine with
pushbuttons
to control automatically
the water flowing
through the group
heads.

levers to
control water
flow through
group heads

power
switch

The Elektra coffee machines are
available in semi-automatic and
automatic.

In an Automatic

machine the

water flow is measured by flow
meters in the machine. This
means the barista simply presses
a button to make a particular cof-
fee drink, with the machine turn-
ing off the flow automatically
when exactly the right amount of
water has been dispensed into the
cup (or cups for a two cup handle).

The amount of water dispensed is
not affected by the density of the
coffee grounds, so you are always
assured of the right level. The finer
the coffee grounds, the longer it

This Elektra machine is
also

Semi-automatic

but with pushbuttons
(shown enlarged)
to control water flow
through the group
heads. Press button
to start water flow,
press again to stop.

2.ESPRESSO EQUIPMENT

Pressure gauges

All the Elektra coffee machines
are provided with a dual pressure
gauge to show pump pressure
(left side) and boiler pressure
(right). The pump pressure is the
water pressure at the pump outlet,

Pushbuttons

(Automatic machine)

The Elektra Balume is an automatic
machine in which pressing a
pushbutton dispenses a fixed
quantity of water (measured by an

internal flow meter), except for
the K button, which is an on-off
control.

When the machine is making coffee,
the pump turns on to force water
through the grounds. The pump
pressure increases to 8 bar (green
region on left side scale). The boiler
pressure will drop slightly, but
should remain at around 1 bar.

If the pressure readings go into
the red, switch off the machine.
Although the boiler is fitted with
safety release valves, if the
gauges show a high pressure,
something is wrong.

so when the pump is off, the pres-
sure reading is the inlet water
pressure.
This is set by a regulator fitted to
the water inlet line, and should be
no more than 3.5 bar.

pump
pressure

boiler

pressure

DANGER

No water (pump) pressure.
Don’t turn the machine on.

Water (pump) pressure should
be around 3.5 bar when pump

is not running. Ok to turn on.

AT START UP

Pump off (3.5 bar), boiler

pressure in green region (1 bar)

Pump on (8 bar), boiler

pressure in green region (1 bar)