First Start-Up - Rancilio KRYO 65 OD User Manual

6.1 Motor rotation
To be carried out by a qualified technician.
For machines with 3-phase electrical supply, the correct rotation
of the motor should be checked.
- Start the grinder and check that grinding is performed
correctly. If this fails to occur, it means that the motor is
rotating in the wrong direction.
- Turn off the machine and the main power supply.
- Invert the two phase conductors, reassemble the machine
and try to perform the grinding operation again.
6.2. Burr calibration
To be performed during installation and after burr replacement
The dosing grinders are tested with a random grind setting, and
will need to be readjusted. This operation should be carried out
with the bean hopper empty.
Hold down the adjustment unlock button (Fig. 2-1) and at the
same time slowly turn the adjustment knob (Fig. 2-3) counter-
clockwise until the burrs brush against each other (when they
come into contact, the sound of metallic friction can be heard),
turn the numbered ring (Fig. 2-2) so that the starting point 0 is
frontal; move the adjustment knob (Fig. 2-3) in the opposite
direction (clockwise).

7. FIRST START-UP

7.1. Description of commands
KRYO 65/ST
Main switch (Fig. 1-9) with two positions; when switched on, the
machine is on and coffee grinding begins.
KRYO 65/AT
Main switch (Fig. 1-9) with two positions; in position (I), the
machine is on and will automatically shut-off when the doser
has been filled.
7.2. Grind setting
The coffee grinder is tested by the manufacturer with a medium
grind setting. The setting depends on the type of coffee used.
- Place a small quantity of coffee beans in the bean hopper
and close the lid;
- Check that the hopper locking slide is open (Fig. 1-4) pushed
in)
- Grind a small quantity of coffee:
- Position the filter holder on the filter holder fork (Fig. 1-8),
then pull the dosing lever (Fig. 1a-11) to dispense a dose of
ground coffee (this operation should be performed after
adjusting the grind setting See 7.3);
- Brew some coffee, checking the dispensing time, the
appearance of the coffee and its taste, considering that
excessively course grounds produce light coloured coffee
without a crema, while grounds that are too fine result in
strong, dark coffee without a crema.
- If the coffee does not respond to your desired requirements,
adjust grind fineness by pressing the ring block button (Fig. 2-1)
and turning the regulation knob (Fig. 2-3) counter-clockwise for
a finer grind or clockwise for a coarser grind.
- Repeat the operation until you have obtained the desired
quality of coffee.
Recalibration of the grind is typically only necessary after a change
in coffee. Minor adjustments may be required throughout use to
accommodate for changes in freshness of the beans.
7.3. Adjusting the ground coffee dose
The doses can be adjusted as follows:
- Turn the knob below the doser (Fig. 1a-12) counter-clockwise
to increase the dose.
8. DECOMMISSIONING
8.1. Temporary
- Close the hopper and grind the coffee beans remaining
between the burrs.
- Turn off the switch and unplug the appliance from the power
source;
- Remove the ground coffee and any coffee beans remaining in
the bean hopper.
- Perform cleaning and maintenance operations;
- Coil up the supply cable and attach it to the machine using
adhesive tape;
- Cover the machine and place it in a dry place, sheltered from
bad weather and to which you have exclusive access.
8.2. Final
In addition to the operations of temporary decommissioning:
- Cut the power cable,
- Pack up the machine using cardboard or similar materials
and hand it over to specialized operators (authorized waste
disposal collectors or dealers in second-hand goods)
9. INFORMATION FOR SERVICE
TECHNICIANS
9.1. Replacement of burrs
Although manufactured in tempered steel, the burrs are subject
to wear and tear.
Their lifespan is influenced by the amount of coffee ground, its
hardness and degree of roasting, as well as the quantity and
purity of the coffee beans.
Small stones and various impurities have a marked abrasive
action which significantly reduces the lifespan of the burrs.
When grinding time becomes noticeably longer or the grind
becomes irregular, the burrs should be replaced as follows:
- Pull the hopper locking slide (Fig. 1–4);
- Start the grinder to grind the coffee remaining between the
burrs;
- Once grinding has finished, turn off the machine and unplug
from the power source;
- Empty the bean hopper (Fig. 1–2);
- Remove the regulation knob (Fig. 1–3);
- Turn the upper burr-holder (Fig. 4–1) counter-clockwise until
the head emerges completely;
- Unscrew the screws (Fig. 4–2) and remove the burrs (Fig. 4–3)
from the burr-holder:
- Carefully clean the burr supports, the burr-holder thread and
its housing;
- Position the new burrs in their holders and block them firmly
in place;
- Reassemble the machine, performing the previous steps in
reverse.
- Calibrate the new burrs.
9