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15. Problem solving
PROBLEM
1.
and the water flows out
of the safety valve.
2.
and vents the steam.
3.
started properly but the
water in the boiler does
not warm up.
4.
flowing from a serving
unit.
5.
servings of espresso
coffee are not constant
or vary on the different
units.
6.
program the serving
quantities on unit 1 and
to copy them on the
other units.
7.
alarm.
8.
42
CAUSE
the boiler or from a circuit of
the unit has a leak.
system (the electrical heating
element is always connected).
(the safety valve trips in at
2-2.5 bar).
defective or is not connected.
1.
excessive quantity for type of
filter used.
electronic control unit or of the
displacement counters.
solenoid valve.
defective displacement meter
of unit 1.
or defective.
level without water.
closed.
SOLUTION
manual charging button, and the
boiler heat exchangers.
eliminate the leak.
heating element and the pressure
switch.
connected to the power supply.
thermostat has tripped in and check
its proper operation.
position 2
or the quantity of ground coffee.
circulation pipe, the valve (flow
variator) of the group, the water
dispenser and the solenoid valve of
the group are not clogged.
metering, check the displacement
meter and its valves.
wiring and the fuse in the electronic
control unit.
separately on each serving unit. If
the problem persists, replace the
displacement meter of the serving
unit affected.
serving group.
meters electrical wiring.
connections, the control unit and the
fuses.
autolevel.
water supply is open.
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