EN
18
8. Mandatory Maintenance and Check-up Operations
These operations are in addition to the Maintenance and Periodic Cleaning Operations as speciied in Chapter 7.
The following maintenance and check-up operations should be carried out by a qualiied technician.
The time required for the periodic maintenance is determinated by the quantity of daily work and/or coffee consumption.
N.B. These periodic maintenance operations are not covered by warranty.
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Replace portailter baskets
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Inspect group valve plungers
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Inspect vacuum breaker
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Inspect expansion valve
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Inspect electrical wiring condition
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Inspect boilers safety switches
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Replace over-pressure valve (safety valve)
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Accurate control of the
tightness at 2,4Nm of each cable on the terminal block.
EVERY THREE/FOUR MONTHS
EVERY SIX/EIGHT MONTHS (in addition to the above)
EVERY YEAR (in addition to the above)
EVERY 3 YEARS (in addition to the above)
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Replace group gaskets
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Replace diffuser screens
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Clean auto-ill probe
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Check vacuum breaker for
proper operation
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Inspect water inlet valve
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Inspect drain system for leaks
or clogs
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Check low rate for each group
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Check brew temperature
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Check that brew pressure is
at 9bar
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Check all switches for proper
operation
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Check/note water hardness
(Water quality must be within the
range of parameters speciied in
the chapter on Installation,
otherwise warranty is voided)
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Check ilter basket condition
If AV Model:
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Check shot volumes
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Test lowmeter’s ohm value
(ohm value is acceptable if
greater than 1.8 K ohm, and
less than 2.2 K ohm
If MP Model:
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Rebuild MP valve
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Check the condition of the inside of boilers and if necessary rinse out with a proper cleaning product allowed for food and beverage
appliances.
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Rebuild steam assemblies
