Grind Setting; Decommissioning; Information For Service Technicians; Replacement Of Burrs - Rancilio KRYO 65 OD Manual De Instrucciones

8.3. Grind setting

The grinders are 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)
- Position the filter holder on the filter holder fork (Fig. 1-8)
and grind coffee;
- 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.

9. DECOMMISSIONING

9.1. 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 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.
9.2. 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)
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10. INFORMATION FOR SERVICE
TECHNICIANS

10.1. 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.

10.2 Technician menu

Must be performed by a qualified technician.
The access to the technician menu is given by switching off the
grinder. Switch on the main switch (Fig. 1-9) while pressing the
confirmation button.