12.3.3.1
Dust
on
the
sensor
-
how
to
clean
If
you
start
getting
a
lot
of
false
alarms
on
filament
jams
or
filament
running
out,
your
sensor
might
need
cleaning.
The
easiest
way
is
to
use
compressed
air.
There
is
a
dedicated
hole
in
the
x-carriage
exactly
for
this
purpose.
Pict.
38
-
Access
hole
for
cleaning
the
filament
sensor
12.3.3.2
Extreme
light
conditions
If
you’re
printing
in
extreme
light
conditions
(direct
sunlight,
very
strong
LED
lighting)
you
might
also
encounter
some
false
alarms.
Settings
->
Fil.
sensor
[on/off]
.
12.3.3.3
Exotic
filaments
Some
translucent
filaments
focus
more
light
on
the
sensor
and
this
can
result
in
weird
behavior.
Certain
colors
like
ivory,
matte
white
or
lime
green
can
also
cause
false
alarms.
If
you’re
printing
with
any
of
these
filaments
and
you’re
getting
a
lot
of
false
alarms,
consider
turning
the
sensor
off
in
Settings
->
Fil.
sensor
[on/off]
.
12.4
Clogged
/
jammed
extruder
Material
clogged
in
the
extruder
can
cause
problems
with
the
printing
or
with
the
loading
of
a
new
filament
.
● Heat
the
nozzle,
remove
the
filament
from
the
extruder,
and
cut
the
rod
about
10
cm
above
the
damaged
part.
● The
next
step
is
to
clean
the
extruder.
There
is
a
service
hole
on
the
left
side
of
the
extruder
where
you
can
access
the
hobbed
pulley
(pict.
39).
● Clean
the
hobbed
pulley;
then
heat
the
nozzle
before
re
loading
the
filament
.
● If
a
problem
persists
you
will
have
to
clean
the
nozzle
.
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