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English
17 EN
16. Defects - Malfunctions
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.
16. Defects - Malfunctions
Interventions by a specializes technician
PROBLEM
CAUSE
SOLUTION
Leaking from the filter-holder rim
(
10
).
Underpan gasket dirty with coffee.
Clean using the special brush provided.
Coffee dispensing time too
short.
Coffee ground too coarse.
Coffee too old.
Use a finer grind.
Use new coffee.
Coffee drips out of machine.
Filter holes blocked or filter-holder
(10
)
outlet hole dirty.
Coffee ground too fine.
Clean.
Use a coarser grind.
Loss of water under the
machine.
Discharge well clogged up.
Discharge pan hole blocked.
Clean.
Clean.
PROBLEM
CAUSE
SOLUTION
Infusion time too short
Rapid dispensing.
Coffee very bland, without cream.
(Same defects on all groups).
Coffee grounds too course.
Old coffee.
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.
Infusion time very short.
Rapid dispensing.
Coffee very bland, without cream.
(Same defects on all groups).
Group nozzle widened through use.
OR gasket in cone-shaped section
leaks.
Infusion valve remains open
Filter edge broken.
The volume flow rate of the group without filter
must be 6.1 inch³ (100 cm³) in 8 ÷ 10 seconds.
Low coffee yield.
Slow dispensing.
Coffee cold and bland.
Spout dirty.
If the group is operated without the filter-
holder, thin, isolated jets will be dispensed
instead of one central jet.
Fast dispensing, coffee bland.
Pressure gauge pump indicates
pressure greater than 131 psi
(9 bar).
Pump out of calibration.
By-pass valve blocked.
Low coffee yield.
Fast dispensing.
Coffee hot and bland.
Filters with perforations widened.
Coarse grinding.
Coffee grounds in cup.
Coffee cold, bland and without
cream.
Normal infusion and dispensing
times.
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).
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.
Coffee cold in the morning at start
of work.
Air in boiler.
See switching on instructions.
Summary of Contents for E61 Legend
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