9.
What
to
do
in
case
of
faults
04/2015
S.
69
9.
What
to
do
in
case
of
faults
The
following
check
list
is
designed
to
assist
the
plant
operator
in
trying
to
identify
causes
of
faults.
Please
contact
the
service
department
at
PRESTO
if
a
fault
occurs
which
is
not
listed
in
the
table.
Please
have
the
type
and
machine
number
stated
on
the
nameplate
to
hand
when
making
the
call.
Abbreviations
used:
F
=
Skilled
personnel
A
=
Operator
*
*
As
far
as
the
person
has
been
authorised
according
to
Chapter
3
"Safety"
Do
not
carry
out
any
work
on
the
machine
which
you
are
not
authorised
to
do!
Repairs
to
electrical
equipment
may
only
be
carried
out
by
our
own
customer
service
engineers
or
by
skilled
electricians.
Ensure
that
the
machine
is
insulated
from
the
mains
supply
before
starting
repairs.
By
means
of
the
display
(1)
built
into
the
operating
desk,
fault
messages
can
be
displayed
in
plain
language.
If
a
fault
occurs
the
message
"Error"
appears“.
Troubleshooting
may
only
start
after
the
machine
has
been
safely
switched
off.
Fig.
98:
faults
indicated
at
the
touch
panel
1