Maintenance
04/2015
S.
59
7.4.13
Hydraulic
hosed
and
screwing:
Check
for
condition
and
leaks
Check
the
hydraulic
pipes
for
visual
defects
(porosity,
damage,
crushing,
etc.
...)
and
leaks.
If
any
defects
are
found
they
must
be
fixed
immediately
by
a
qualified
specialist.
Damaged
hydraulic
pipes
may
not
be
repaired
or
assembled
from
parts
that
have
already
been
used.
Observe
safety
conditions!
SWITCHING
OFF
&
SECURE
(see
7.1)
Hydraulic
maintenance
work
may
only
be
performed
by
authorised
specialists.
The
parts
to
be
replaced
must
be
free
of
pressure.
Openly
accessible
pipes
must
be
equipped
with
a
pipe
protection
and
a
detachment
protection
according
to
DIN
ISO
16252.
For
this
reason
if
hydraulic
pipes
are
replaced
only
original
PRESTO
spare
parts
may
be
used,
or
products
that
fulfil
these
requirements.
Fig.
86:
hydraulic
hose
with
hose
protection
/
detachment
protection
Hydraulic
pipes
must
be
replaced
6
years
after
being
manufactured
at
the
latest
(see
stamping
on
the
screw
connection.