Cimbali S30 Techniker-Handbuch Seite 232

10. Coffee Circuit Anomalies
ANOMALY DESCRIPTION
Beverage dispensing time incorrect
Beverage division dose discard >10%
Dry ground coffee residue on the
group and/or on the base of the machine
Formation of bubbles and/or poor bever-
age quality
Uneven beverage colour
Only water comes out of the dispensing
nozzle (excluded during washing cycle)
Inconsistent coffee dose in cup
POSSIBLE CAUSES
a) ground coffee dose incorrect
b) ground coffee grind incorrect
c) PGS algorithm Qrif. settings incorrect
d) flow beyond the threshold of acceptability ±50% (PGS not active)
e) coffee filter clogged
f) lower piston OR gasket out of its seat
g) coffee beans are forming obstruction, accidental obstruction in the hopper
h) rotating grinder-holder blocked by a foreign body
e) delivery-spout-cover holes clogged with dried coffee
f) Ø 2 holes for pressurised division clogged by dried coffee
g) Ø 2 holes for pressurised division with presence of processing residues
a) ground coffee manifold incorrectly positioned
b) coffee dose incorrect
c) coffee group tipping spring broken
a) incorrect grind
b) ground coffee dose incorrect
c) coffee group chamber temperature setting (TGR) incorrect
d) air leaking from delivery-spout-cover gasket
e) insufficient boiler temperature, coffee under-extracted
f) beverage flow inadequate
g) coffee beans old
a) coffee residues in tubes at the end of dispensing Wash coffee circuit
b) coffee group chamber temperature setting (TGR) incorrect
c) incorrect grind
d) coffee dose incorrect
a) Rotating grinder-holder mechanically blocked
b) grinder/dispenser motor not working
c) coffee beans are forming obstruction, accidental obstruction in the hopper
d) recipe coffee dose setting incorrect
a) boiler expansion valve incorrectly adjusted
b) volumetric counter failed
c) compensation current of the group insufficient
110 EN