Mandatory Maintenance And Check-Up Operations - La Marzocco linea Bedienungsanleitung

9. Mandatory Maintenance and Check-up Operations

These operations are in addition to the Maintenance and Periodic Cleaning Operations as specified in Chapter 7.
The following maintenance and check-up operations sould be carried out by a qualified technician.
N.B. These periodic maintenance operations are not covered by warranty.
▪
Replace group gaskets
▪
Replace diffuser screens
▪
Clean auto-fill probe
▪
Check vacuum breaker for
proper
operation
▪
Inspect water inlet valve
▪
Inspect drain system for leaks
or clogs
▪
Rebuild steam assemblies
▪
Replace portafilter baskets
▪
Inspect group valve plungers
▪
Inspect vacuum breaker
▪
Inspect steam boiler pressurestat
▪
Inspect contactor
▪ 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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EVERY THREE/FOUR MONTHS
▪
Check flow rate for each group
▪
Check brew temperature
▪
Check that brew pressure is
at 9bar
▪
Check all switches for proper
operation
▪
Check/note water hardness
(Water quality must be within the
range of parameters specified
EVERY SIX MONTHS (in addition to the above)
EVERY YEAR (in addition to the above)
EVERY 3 YEARS (in addition to the above)
in the chapter on Installation,
otherwise warranty is voided)
▪
Replace over-pressure valve
▪
Accurate control of the tightness at 2,4Nm of each cable on the
terminal block.
If AV Model:
▪
Check shot volumes
▪
Test flowmeter's ohm value (ohm
value is acceptable if greater
than 1.8 K ohm, and less than
2.2 K ohm
If MP Model:
▪
Rebuild MP valve