FOAM
Not hot enough
Check steam boiler pressure
+-1.1bar
Check the pump speed
(between 20% and 35%)
Check the EVVS solenoid
valve heating circuit (coil
heating)
Check the coil; it must be
clogged.
Dose problem
Check the inlet nozzle
(refrigerator tube)
Check the milk time in
seconds (product settings)
Check pump rotation speed,
replace if necessary
No foam
Check EVALC (hot milk) or
EVALF (cold milk)
Check that the hot water valve
is not clogged
Check the pump speed in
relation to the product (hot
10-15%/ cold 50-
70%
Disconnect the hot water
valve, run a cycle, if presence
foam with spitting problem of
air entry (check
EVALF/EVALC)
Change the pump
Poor quality foam
Check milk temperature
between 3°C and 8°C
Check the "advanced milk
settings" (see of adjustment
sheet)
Review the air settings
(flush first)
Check the tightness of the
entire hydraulic circuit
Change the pump
Foam too dense
Check the pump speed in
relation to the product (hot 10-
15%/ cold 50-
70%
Reduce hot air if hot product
Reduce cold air if cold product
Foam not dense enough
Check the pump speed in
relation to the product (hot 10-
15%/ cold 50-
70%
Increase hot air if hot product
Increase cold air if cold
product
Bubbly foam or spitting from
the nozzle
Check the refrigerator module
circuit for air leaks
Check the hot water non-
return valve, change if
necessary
Check the pump union / EVNL
Check the sealing of the
hot/cold air EVALF/EVALC SV
Cold milk / not cold enough
Check the milk in the
refrigerator (check the
calibration)
Check EVLCF; it must be in
operation during a cold cycle.
If EVLCF does not operate
check the presence of 24
VDC; if OK replace the
solenoid valve
Foamsystemdiagnosis; follow step by step
from the top to the bottom,
for each element.
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