General Information - HYDAC International SBO Série Mode D'emploi

1.

General information

Diaphragm accumulators are pressure vessels
(hydraulic accumulators) with a nitrogen filling
that is separated from the operating medium by
a diaphragm.
They are intended for use in hydraulic
installations and are exclusively designed to
store and then discharge pressure fluids.
Hydraulic accumulators are dimensioned,
designed, manufactured and placed on
the market on the basis of national and
international regulations. The national
regulations that apply at the place of installation
must be observed for initial start-up and
operation.
The plant operator is responsible for the
hydraulic accumulator being used as intended
and for these regulations being complied with.
The documentation supplied with the hydraulic
accumulator must be kept in a safe place for
the installation inspection and for subsequent
repeat testing.
Detailed assembly and repair instructions are
available for work which may be carried out
on the screw-type accumulator after initial
installation and commissioning, e.g. repair
work. These are available on request.
NOTE
GB
All work on HYDAC diaphragm accumulators
must only be carried out by suitably trained
staff.
Incorrect installation or handling can lead to
serious accidents.
42
Gases under pressure.
After discharging and/or completely draining
the hydraulic accumulator (e.g. to depressurise
the hydraulic system before work is carried
out), the accumulator can build up an amount
of pressure again when the lines are later shut
off on the fluid side.
This problem must be taken into account
generally and in particular before carrying
out work on hydraulic systems which include
connected hydraulic accumulators.
All the fluid-side lines connected to the
hydraulic accumulator must therefore be
depressurised and after that the lines must
remain open.
Only then may the accumulator be removed
from the hydraulic system.
Before working on the accumulator itself,
the gas side of the accumulator must be
depressurised and remain open. The gas side
must be checked to ensure it is depressurized.
Only then may the appropriate work (e.g.
disassembly of the accumulator) be carried out.
On no account must any welding, soldering
or mechanical work be carried out on the
accumulator.
Hydraulic accumulators must only
be charged with nitrogen. Never
use oxygen or air:
Risk of explosion!
Danger of bursting and loss of
operating permission if machining
and/or welding/soldering
operations are carried out!
WARNING
The accumulator body can become hot.
Risk of burns.
NOTE
In the event of translation, only the original
version of the operating manual in German is
legally valid.