La San Marco 100 E/S PRACTICAL - Troubleshooting Common Problems; Boiler Leaks and Valve Issues; Heating and Water Flow Failures; Espresso Output Consistency

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ENGLISH
15. Problem solving
PROBLEM CAUSE SOLUTION
1.
r5IFCPJMFSJTGVMMPGXBUFS
and the water ows out
of the safety valve.
r0OFPGUIFPVUáPXMJOFTGSPN
the boiler or from a circuit of
the unit has a leak.
r$IFDLUIFBVUPMFWFMDJSDVJUUIF
manual charging button, and the
boiler heat exchangers.
r3FQMBDFXPSOPSEBNBHFEQBSUTUP
eliminate the leak.
2.
r5IFTBGFUZWBMWFUSJQTJO
and vents the steam.
r.BMGVODUJPOPGFMFDUSJDBM
system (the electrical heating
element is always connected).
r1SFTTVSFJODSFBTFJOUIFCPJMFS
(the safety valve trips in at
2-2.5 bar).
r$IFDLUIFXJSJOHUIBUGFFETUIF
heating element and the pressure
switch.
3.
r5IFNBDIJOFXBT
started properly but the
water in the boiler does
not warm up.
r5IFFMFDUSJDIFBUJOHFMFNFOUJT
defective or is not connected.
r.BJOTXJUDIUVSOFEUPQPTJUJPO
1.
r$IFDLJGUIFIFBUJOHFMFNFOUJT
connected to the power supply.
r$IFDLJGUIFIFBUJOHFMFNFOUTBGFUZ
thermostat has tripped in and check
its proper operation.
r5IFNBJOTXJUDINVTUCFUVSOFEUP
position 2
4.
r5IFSFJTOPXBUFS
owing from a serving
unit.
r$PGGFFHSPVOEUPPàOFPS
excessive quantity for type of
lter used.
r$MPHHFEXBUFSDJSDVJU
r%FGFDUJWFTPMFOPJE
r"EKVTUUIFHSJOEJOHDPBSTFOFTTBOE
or the quantity of ground coffee.
r$IFDLUIBUUIFJOKFDUPSUIFVQQFS
circulation pipe, the valve (ow
variator) of the group, the water
dispenser and the solenoid valve of
the group are not clogged.
r*OUIFNBDIJOFTXJUIFMFDUSPOJD
metering, check the displacement
meter and its valves.
r$IFDLUIFTPMFOPJEPGUIFVOJUJUT
wiring and the fuse in the electronic
control unit.
5.
r5IFQSPHSBNNFE
servings of espresso
coffee are not constant
or vary on the different
units.
r"COPSNBMPQFSBUJPOPGUIF
electronic control unit or of the
displacement counters.
r-FBLGSPNTFSWJOHVOJU
solenoid valve.
r8BUFSEJTQFOTFSTDMPHHFE
r1SPHSBNUIFTFSWJOHRVBOUJUJFT
separately on each serving unit. If
the problem persists, replace the
displacement meter of the serving
unit affected.
r3FQMBDFUIFTPMFOPJEWBMWFPGUIF
serving group.
r$IFDLUIFXBUFSEJTQFOTFS
6.
r*UJTOPUQPTTJCMFUP
program the serving
quantities on unit 1 and
to copy them on the
other units.
r"COPSNBMPQFSBUJPOPS
defective displacement meter
of unit 1.
r$IFDLUIFDPOUSPMVOJUEJTQMBDFNFOU
meters electrical wiring.
r3FQMBDFUIFEJTQMBDFNFOUNFUFS
7.
r%JTQMBDFNFOUNFUFST
alarm.
r%JTQMBDFNFOUNFUFSTKBNNFE
or defective.
r%FGFDUJWFXJSJOH
r3FQMBDFUIFWPMVNFUSJDDPVOUFS
r$IFDLUIFXJSJOHBOEJUT
connections, the control unit and the
fuses.
8.
r"VUPMFWFMBMBSN r8BUFSDJSDVJUPGBVUPNBUJD
level without water.
r.BJOXBUFSTVQQMZWBMWF
closed.
r'BVMUZBVUPMFWFMTPMFOPJE
r$IFDLUIFIZESBVMJDDJSDVJUPGUIF
autolevel.
r$IFDLJGUIFPOPGGWBMWFPOUIF
water supply is open.
r3FQMBDFUIFBVUPMFWFMTPMFOPJE