Chapter
10
Maintenance
General
Before
starting
troubleshooting:
Turn
off
the
main
switch.
Secure
the
main
switch
so
that
it
cannot
be
switched
back
on.
CAUTION
Rotating
fan
impeller
Risk
of
severe
injury
to
limbs
through
contact
with
the
part.
Wait
until
the
fan
has
stopped
(approximately
5
minutes).
Maintenance
intervals
Depending
on
the
usage
case
of
the
scrubber,
factors
such
as
the
water
quality,
dust
type
and
quantity,
temperatures,
additives
used
in
processing
procedures,
and
number
of
shifts
influence
the
intervals
between
the
maintenance
cycles.
The
maintenance
intervals
listed
here
are
therefore
merely
recommenda
‐
tions
for
normal
single
‐
shift
operations.
The
intervals
might
vary
depending
on
the
usage
scenario
and
must
be
cal
‐
culated
and
defined
for
the
scenario
at
hand.
An
important
factor
for
defining
maintenance
intervals
is
the
water
re
‐
placement
cycle.
As
water
contamination
increases,
the
ability
of
the
water
to
hold
dust
decreases,
the
separation
performance
drops,
and
there
are
greater
deposits
of dirt
in
the
scrubber.
Disposal
of
sludge
As
the
operator,
you
must
check
‐
on
a
case
‐
to
‐
case
basis
‐
how
the
dust
that
is
separated
by
the
device
and
accumulates
as
sludge
is
to
be
stored
and
disposed
of.
Regulations
on
the
storage
of
specific
types
of
dust
must
be
observed
in
particular.
Changing
the
water
It
is
vital
to
ensure
the
regular
replacement
of
the
water
in
the
device.
There
are
the
following
types
of
water
change:
‐
Discontinuous
water
change
‐
Continuous
water
change
For
relevant
information
on
the
required
water
quality,
please
see
our
bro
‐
chure
on
water
as
an
operating
source.
Build
up
of
dust
deposits
Any
accumulations
of
dust
must
be
removed
promptly;
otherwise,
they
can
be
very
hard
to
eliminate.
Any
deposits
of
dust
on
the
surface
of
the
device
must
also
be
removed.
Ignition
risks
must
be
avoided
during
cleaning
and
maintenance
work.
Tools
Use
brooms
and
brushes made
from
materials
that
do
not
cause
sparks.
Only
approved
industrial
vacuum
cleaners
of
type
B1
may
be
used.
Dust
turbulence
Dust
turbulence
is
to
be
avoided.
The
blowing
out
of
compressed
air
is
for
‐
bidden
during
cleaning
work.
Soiling
around
the
cooling
air
outlet
Any
dry
soiling
above
or
below
the
cooling
air
openings
results
from
heavily
contaminated
cooling
air
sucked
in
by
the
motor
from
the
installation
room.
Safety
screws
on
upper
maintenance
door
Following
the
completion
of
maintenance
work,
reattach
the
safety
screws
to
the
door
latches
in
order
to
prevent
unauthorized
access
to
the
fan
im
‐
peller.
