Electric + Gas Heating; (If Gas System Is Present); Preliminary Operations; Grinding And Dosing - Wega EMA Use And Maintenance Manual

7.3

Electric + gas heating

(if gas system is present)

Proceed as indicated in paragraph 7.2 "Gas heat-
ing";
after confirming that the flame has ignited, turn
the main switch (A) to position 2. In this way the
boiler heating element is powered and operating
pressure will be reached more quickly;
wait for the operating pressure indicated on the
pressure gauge to reach the working value of
1-1.2 bar;
The connection and tune up of the gas system has
!
to be performed by technical staff.
In case of gas-related changes or malfunction,
contact the technical support.
For reasons of safety, gas heating must be
shut down during long periods of disuse of
the machine (during the night or when the
establishment is closed).
It is not advisable to put cloths or other objects
i
on the cup heater, as this obstructs normal air
flow.
Do not operate the gas burners when the boiler
is empty. During the machine's warm-up phase
(roughly 20 minutes), the negative pressure
valve will release steam for a few seconds until
the valve itself closes
During the machine's warm-up phase (roughly 20
i
minutes), the negative pressure valve will release
steam for a few seconds until the valve itself closes.
User manual
8

Preliminary operations

8.1

Grinding and dosing

It is important to have a dosing-grinding device
next to the machine with which to grind the coffee
to use daily.
The grinding and the dosing of the coffee must
be done according to that indicated by the manufac-
turer of the dosing-grinding device. The following
points are also to be kept in mind:
to obtain a good espresso it is recommended not
to keep large stocks of coffee grains. Observe the
expiry date indicated by the producer.
never grind large volumes of coffee, it is advisable
would be to have the quantity contained in the
dosing device and use it if possible by the end
of the day.
if possible, never buy coffee that is already
ground as it expires quickly. if necessary, to buy
it in small vacuum-sealed packages.
8.2

Preparing the coffee

Fill the filter with
a dose of ground
coffee (circa 6-7 gr.)
and press it with
the press;
hook the filter-
holder to the unit
without closing it
too tightly in order
to avoid excessive
wear of the gasket;
for the same reason it is recommended to clean
the edge of the filter before attaching the filter
holder to the dispensing unit;
follow the procedures specified by the manufac-
turer of the grinder.
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