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"continuous serving" models with hydraulic unit, and to the manual piston type (known as lever operated). La San Marco S.p.A. grinder-dispensers are profes- sional devices designed and built to be used with this type of espresso coffee machine.
• The La San Marco S.p.A. grinder-dispenser must be used in the manners described in this manual; all other improper or inappropriate uses of this device void the war- ranty conditions and the liability of the manufacturer.
3. technical characteristics 3.1 General characteristics of the different models The La San Marco grinders-dispensers are professional equipment designed for grinding and metering cof- fee beans. La San Marco S.p.A. manufactures four basic grinder-dispenser models: SM 91; SM 96; SM MK; SM FK. They are essentially made up of: • A painted aluminium housing 1. The size, shape and volume are identical for all models, except models SM MK and SM FK, in which the standard housing is provided with a base 2 that contains the electrical and electronic components. • A hopper 4, made of transparent plastic material, positioned on top of the grinder-dispenser. The hopper 4,6 litre is fixed to the grinder-dispenser by a special screw 8. The hopper can only be removed with the help of an appropriate tool.
• The electrical system prearranged by the customer must be in compliance with applicable standards. The power socket must be provided with a suitable ground conductor. La San Marco S.p.A. declines any liability if the prescriptions of the law are not complied with. An improper installation can cause damage or personal in-jury, for which the manufacturer cannot be considered liable.
4.3 Programming the grinding time The electronic control unit controls the grinding time and restarts the grinder-dispenser after a certain number of batches of ground coffee are dispensed. The unit is programmed by the manufacturer according to preset values (see table). The grinder-dispenser, started with the push button 3, remains active and stops at the end of the preset grinding time or is stopped by the action of the batches of overflow limit switch, which resets the timer.
3 to position "zero". Motor restart based on the number of ground coffee servings is programmable and may take place after 6, 12, 18, or 24 servings. • Manual model SM92 - SM97: same characteristics as the automatic version, except for the “overflow” grinding shutdown function and motor restart based on the number of ground coffee servings.
5.2 Practical suggestions for the operator • Keep the coffee beans in sealed containers in a dry environment at room temperature. • Never leave large quantities of ground coffee inside the dispenser for long periods (for example: during the off day). • Check from time to time the fineness of the ground coffee and the quantities dispensed, bearing in mind that weather conditions (ambient humidity) have a considerable effect on the preparation of espresso coffee. Increase the coarseness of the ground coffee when ambient humidity increases and decrease it when the humidity decreases.
If it is not possible to solve the problem as suggested, or if problems other than those described above occur, please contact the La San Marco S.p.A. authorized technical service centre. La San Marco S.p.A. reserves the right to apply technical changes to the equipment should they become necessary, without advance notice.
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La San Marco S.p.A. Via Padre e Figlio Venuti, 10 34072 Gradisca d’Isonzo - Gorizia - Italy Tel. +39.0481.967111 Fax +39.0481.960166 http://www.lasanmarco.com E-mail: info@lasanmarco.com...