Manual Isomac PRO 3.1 (page 23 of 36) (English, German, Italian)

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In order to obtain an excellent espresso coffee, it is important to

use a top quality blended coffee, properly roasted and ground;

grinding is correct when the coffee delivery time is between 15-18

seconds for one serving and between 30-35 seconds for two

servings. The coffee should be grinded at the time of use. Once

ground, the coffee loses its flavour within a short time; if the grin-

ding is too coarse you will obtain light-coloured and weak coffee,

without froth; if the grinding is too fine you will obtain dark and

strong coffee, with little froth.

Once you have placed the filter into the filter-holder (12), fill the

filter with the amount of coffee required for 1 or 2 cups (7 gr. –

14 gr.), level it off, and press the coffee down with the presser,

manually clean the filter edge from any coffee residues and fit the

filter-holder into the brewing unit (11) moving it rightward tightly

in its place.

Place the cups under the spouts and start the brewing using the

unit control (15).

Warm cups contribute to maintain the right temperature of the

coffee delivery; it is therefore advisable, before using it, to place

the cups on the cups-holder grid (3), which will make it possible

to take advantage of the heat released by the boiler.

Once you have obtained the desired amount of coffee, stop the

delivery using the unit control (15) and leave the filter-holder in

its place.

To prepare additional cups of coffee, remove the filter-holder (12)

from the unit, moving it leftward, empty the coffee grounds into the

drawer provided and once again follow the previous steps.

Caution! We recommend not to touch the brewing units

or the steam and hot-water nozzles when the machine

is running, and pay attention not to place your hands

under the units or nozzles during the delivery, to avoid

possible scalds.

It is advisable to leave the filter-holders, with their own filters and

coffee grounds, fitted into the unit throughout your days’ work, so

that the filter-holder will always preserve an optimal temperature.

Caution! When the machine is new, the filter-holder may not be ali-

gned (perpendicular to the machine itself) as shown in the picture;

this however does not affect the proper use of the machine itself.

After a short period of use the filter-holder will be gradually settled

on the correct position.

A = Position of the closed filter-holder when the machine is new.

B = Position of the closed filter-holder after the machine has been

in use for a brief period.

7 – CONTROL GROUPS

Machine equipped with semiautomatic, continuous delivery wor-

king with a micro switch.

Coffee delivery is obtained moving the small lever of the group

(15) placed on the control instrument board; bringing the small

lever downwards. The micro switch connected to it will start up the

pump for the delivery of water under pressure to the group.

The group through some inner devices, allows, before the pre-

infusion and after the infusion of the coffee in several ways.

Once the desired amount of coffee has been obtained, bring the

small lever (15) upwards, stop position, to stop delivery.

7.1 BREWING PRESSURE PROFILING CONTROL

The models are equipped with the system BPPC (Brewing Pressure

Profiling Control).

The pressure gauge set on the group, allows to read the brewing

pressure profiling of the espresso.

Thanks to this instruction the barman can verify the exact milling,

pressing and dose of the coffee in the filter.

If the brewing pressure is lower than the pump calibration (9 bar is

our company setting), it means that the milling is big, or the coffee

is not pressed correctly, or the dose is not enough.

8 - HOT WATER DELIVERY

Place a conteiner under the hot water nozzle (9), turn the hot water

tap knob (6) counter-clockwise.

Hot water at about 95°C will come out of the botton part the steam

nozzle (9).

Close the hot water tap (6) when you have enough hot water by

turning the konb clockwise.

9 - PREPARATION OF OTHER DRINKS (MILK, CAPPUCCI-

NO AND OTHER HOT DRINKS)

Warning ! Burns danger ! Some sprinkling of hot water

can arrive at the beginning of the supply.

The endowment tube can reach high temperature: avoid to touch it

(R) Pump pressure regulation screw

Fig. 3

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Isomac PRO 3.1 Manual

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