Synesso MVP, Technical Manual

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Vacuum Breaker:
•
When the machine is heating from cool and begins to build pressure from zero, it is normal for the vacu-
um breaker to sputter until the steam tank is near full pressure.
•
If sputtering occurs when the steam tank is near or at the set pressure, replace the vacuum breaker.
Sight Glass:
•
Steam or water leaking from around the glass tube of the sight glass indicates that the internal O - rings
are worn. Purchase a rebuild kit and replace the O - rings.
General Issues
Beeping Machine:
•
Low level alarm probe is not grounding out. Power cycle the machine. Inspect and clean the probe. En-
sure the tank is filling. Check for adequate water flow to the machine.
Portafilter Stopping Point is Off
•
Under normal circumstances, when the portafilters are fully engaged the handle will face the barista. If
the portafilter stopping point is occuring before this point (handle points to the left), check that the
standard size 8.5 mm gaskets are being used and that the gasket is seated fully around the diffuser block.
•
If the portafilter stopping point is occurring after the normal point (handle points to the right), inspect
the
“ ears ” of the portafilter for wear. If brass is showing on the ears, try using the taller 9mm gaskets.
Alternately, you can replace the portafilter head.
Pump/Motor is Making an Unusual Sound:
•
Make sure the water to the pump is fully on. Check the filters for clogs, change if needed. Check the wa-
ter lines for kinks.
•
Pump may be worn and in need of replacement.
High - Pitched Whistling Noise When Groups are Active:
•
Water is leaking out from the brew system. Check for VMUF0# error. Remove the right side panel and
inspect the expansion valve. Ensure the expansion valve is not dripping while a shot is brewing or blind
filter is engaged at full pump pressure. Adjust the expansion valve if needed.
•
Check that water is not leaking from the brew valve discharge while the machine is idle or brewing. Un-
der normal circumstances, a small amount of water will be discharged only when the group goes from ON
to OFF.
TROUBLESHOOTING