General Information - HYDAC International SK210 Instrucciones De Servicio

1. General information

Piston accumulators are pressure vessels
(hydraulic accumulators) with a nitrogen filling
that is separated from the operating medium by
a piston. 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 owner 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 any periodic
inspections.
Detailed assembly and repair instructions are
EN
available for work which may be carried out on
the piston accumulator after installation and
commissioning, e.g. repair work. These are
available on request.
NOTICE
All work on HYDAC piston accumulators must
only be carried out by suitably trained staff.
Incorrect installation or handling can lead to
serious accidents.
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 if the lines are later shut off
on the fluid side.
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 hydraulic accumulator be
removed from the hydraulic system.
30
Before working on the hydraulic accumulator
itself, the gas side of the hydraulic accumulator
must be depressurised and remain open.
Ensure that the gas side is depressurised.
Only then may the appropriate work (e.g.
disassembly of the hydraulic accumulator) be
carried out.
On no account must any welding, soldering or
mechanical work be carried out on the piston
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 shell can become hot.
Risk of burns.
DANGER
The piston accumulator may become
electrically charged. Risk of spark.
NOTICE
For legal information see www.hydac.com.
NOTICE
Key to fold-out pages:
4 I = Charging and testing unit
4 II = SAF circuit diagram
5l = Standard model
screw design
SK210/350
5ll = Series SK280
formed design
VB – rechargeable
000 – non-rechargeable
5 III = Torque values