Schaerer Ambiente 2 Service Manual

Chapter 4 Fault diagnosis
SMSO-2-02.04- 15.07.03 109
Brewing unit malfunction.
System / component Possible cause Remedy
Mechanical faults
 Grinding degree too fine  Adjust grinding degree (see “Mainte-
nance, Setting the Grinding Degree”)
Lower piston / outlet piston  O-ring defective / worn, or heavily con-
taminated (coffee underneath these O-
rings)
 clean and/or replace (see “Maintenance,
dismantle lower piston/ replace O-ring”)
Lower piston  External diameter too great; piston jams
in brewing cylinder
 replace (see “maintenance, dismantle
lower piston/replace O-ring”)
Lower piston  Coffee grounds in lower piston (as a
result of overfilled grounds container)
 clean (see “maintenance, dismantle
lower piston/replace O-ring”)
Brewing cylinder  Inner surface of brewing cylinder is
scratched; brewing system not water-
tight
 replace (see “Maintenance, dismantle
brewing unit”)
Aluminium guides  The screws on the guides have come
loose, the guide plates or guiding sur-
faces are scratched or damaged
 Replace the entire brewing cylinder
Funnel / stripper  Funnel / funnel spring defective
 Stripper
 replace (see “Brewing unit, dismantle
brewing unit”)
 replace stripper (see “Brewing unit,
replace stripper”)
Protection for friction plunger  missing  replace
Entire brewing unit  heavily contaminated  clean, replace any defective parts (see
“Maintenance, dismantle brewing unit”)
Brewing unit with friction plunger  O-rings on friction plunger defective; too
little or too much friction
 Replace the O-rings
 Replace the lower piston
 Replace the friction plunger for a friction
piston 2000 (conversion kit)
Brewing unit with friction piston
2000
 Spring in friction piston broken  replace
Piston motor  Piston motor fixing loose  Install the piston motor correctly (see
Maintenance, brewing unit piston motor)
Electrical faults
Position switch
 Micro switch for initial setting defective
(message on display “motor current”)
 Check the function and setting of the
position switch (see Maintenance, re-
place/set micro switch” and “control sys-
tem diagram, limit switch for brewing unit
initial settings)

Schaerer Ambiente 2 Specifications

General

Brand	Schaerer
Model	Ambiente 2
Category	Coffee Maker
Language	English