Wega MININIVA CLASSIC DUO, Use And Maintenance Manual

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35
ENGLISH
User manual
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The descaling of the machine must be carried out by professional technicians to ensure that such operation does
not lead to release of hazardous materials for food use.
Intervention Weekly Monthly
GAUGE
Keep the boiler pressure between 0.8 and 1.4 bar.
X
GAUGE
Periodically check water pressure during coffee delivery: check the pressure indicated on the gauge,
which must be between 8 and 9 bar inclusive.
X
FILTERS and FILTER HOLDERS
Check the condition of the filters. Check for any damage on the edge of the filters and check whether
any coffee grounds settle in the coffee cup.
X
GRINDER-DOSER
Check the dose of ground coffee (between 6 and 7 gr. per stroke) and check the degree of grinding.
The grinders must always have sharp cutting edges. Their deterioration is indicated by the presence
of too much powder in the grounds. You should replace the flat grinders after every 400/500 kg of
coffee. For conical grinders, replace every 800/900 kg.
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SOFTENER
The build-up of lime scale deposits in the hydraulic circuit of the machine indicates that
regeneration has been neglected. Use care in areas where the water is very hard. It will be
necessary to regenerate at more frequent intervals, likewise if there is high consumption of hot
water for tea and so forth.
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11
Checks and maintenance
To ensure perfect safety and efficiency of the machine over time, it is necessary to carry out mainte-
nance. In particular, it is advisable to ask Technical Service to carry out an overall check of the machine at
least once a year.
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If the problem cannot be resolved, turn the machine off and call for Technical Assistance. Do not attempt any sort
of repairs.