17
2016/01 Rev. 0.0
OptiFresh (Bean) NG 2.0
EN
2.4.4 Troubleshooting
Problem
Probable cause
Action
Coffee does not taste
strong enough.
The used coffee is too
course.
OptiFresh: Prevent overdosing, use a ‘fresh
brew’ coffee quality. This quality has coffee
particles which are much smaller to shorten
the extraction time.
OptiFresh Bean: adjust the coffee grinder finer.
The contact time of the
coffee/water mixture is
too short.
Extend pause 2 time, this increase the coffee/
water mixture contact time.
Coffee taste too strong
and/or too bitter.
The used coffee is too
fine.
OptiFresh Bean: adjust the coffee grinder
courser.
The contact time of the
coffee/water mixture is
too long.
Shorten pause 2 time, this decrease the
coffee/water mixture contact time.
The in cup coffee volume
is suddenly too less.
The boilers overflow
is obstructed so the
boiler is vacuumed.
Check if the overflow outlet, located just above
the waste bin, is not being obstructed by a
plastic bag.
Coffee stay behind in the
brewer cylinder.
The coffee outlet does
not stay in position
long enough.
Extend pause 4 time, the coffee outlet stays
open longer.
The coffee flows out too
slowly from the brewer.
The piston does not
drops far enough
and close the spout
partially.
Extend start brewer 4 so the piston drops
further.
1st cup of coffee overflows
Brewer dispensing
valve (DV1) does not
close. During the night
the brewer fills with
water
Check Brewer dispensing valve (DV1), descale
or replace the valve.
During the preparation
of Cappuccino and Latte
macchiato, the milk layers
were disrupted.
The coffee flows out
too quickly from the
brewers sprout.
Shorten start brewer 4 so the brewers spout
does not opens completely and the coffee
slowly runs out. Its possible that pause 4 need
to be extended too.
The wiper pushes against
the coffee residue when
moving to the left. The
brewer unit does not rise
far enough.
The brewer unit is
hindered during the
upward movement.
Check if the brewer unit is able to move
upwards freely.
