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English
Defects - Malfunctions
PROBLEM
SOLUTION
CAUSE
Direct action by the customer
Before calling service personnel, to avoid useless expense, check whether the machine problem corresponds to one of the cases listed below.
Leaking from the filter-holder rim (
10
).
Clean using the special brush provided.
Underpan gasket dirty with coffee.
Coffee dispensing time too short.
Use a finer grind.
Use new coffee.
Coffee ground too coarse.
Coffee too old.
Coffee drips out of machine.
Clean.
Use a coarser grind.
Filter holes blocked or filter-holder
(10
)
outlet hole dirty.
Coffee ground too fine.
Loss of water under the machine.
Clean.
Clean.
Discharge well clogged up.
Discharge pan hole blocked.
Defects - Malfunctions
Interventions by a specializes technician
PROBLEM
COMMENTS
CAUSE
Infusion time too short
Rapid dispensing.
Coffee very bland, without cream.
(Same defects on all groups).
Infusion time very short.
Rapid dispensing.
Coffee very bland, without cream.
(Same defects on all groups).
Low coffee yield.
Slow dispensing.
Coffee cold and bland.
Fast dispensing, coffee bland.
Pressure gauge pump indicates pressure
greater than 9 bar.
Low coffee yield.
Fast dispensing.
Coffee hot and bland.
Coffee cold, bland and without cream.
Normal infusion and dispensing times.
Coffee cold in the morning at start of work.
Dispensing slow.
Coffee burnt and cold.
Cream very dark, with tendency of formation
of an “eye”.
This defect is associated to other secondary
symptoms which may be caused by a number
of other causes as per the previous points.
Do not adjust the machine until all other
causes have been excluded.
The capacity of the group without filter must
be 100 cm³ in 8 ÷ 10 seconds.
If the group is operated without the filter-
holder, thin, isolated jets will be dispensed
instead of one central jet.
Coffee grounds in cup.
Move group to and fro to remove air bubble.
When touching the water tube it is warm near
to the machine.
Pressure gauge calibrated with values that are
too low.
See switching on instructions.
Coffee grounds too course.
Old coffee.
Group nozzle widened through use.
OR gasket in cone-shaped section leaks.
Infusion valve remains open
Filter edge broken.
Spout dirty.
Pump out of calibration.
By-pass valve blocked.
Filters with perforations widened.
Coarse grinding.
Air bubble in thermosiphon circulation.
Check valve does not hold (with low
pressure in system).
Heat exchangers emptied.
Heat exchanger defective (shows pressures
higher than real values).
Air in boiler.
Coffee grounds too fine.
Low pressure in pump.
Mesh filter above spout dirty.
Spout partially blocked.
