Service Life; Customer Service - HYDAC International SB 330 Notice D'utilisation

6.

Service life

Like all pressure vessels, bladder accumulators
have a finite service life. The service life is
dependent on the amplitude of pressure
fluctuations and on the number of load
reversals.
The permitted load reversals are specified
in the documentation. The authorised
representative can use this data to determine
the operating life of the bladder accumulator
(housing strength) depending on the operating
conditions of the hydraulic system.
The transfer of gas across the bladder due to
its physical properties, as well as a failure in
the bladder, can result in an accumulation of
gas in the hydraulic system. If the pressure
falls, this gas expands significantly. Appropriate
measures must be taken to relieve to system
the gas.
7. Disposal
DANGER
Before carrying out any work on hydraulic
accumulators, the relevant safety precautions
must be taken.
When nitrogen is released from hydraulic
accumulators in enclosed spaces, adequate
ventilation must be provided.
Danger of asphyxiation.
– Depressurise the fluid side
– Release pre-charge pressure (p
– Remove closing elements (e.g. valves/plugs)
on the gas and fluid sides
– Disassemble the hydraulic accumulator into
its constituent parts and dispose of them
according to material type
8.
Service, repeat testing and repairs can be
carried out at the HYDAC head office or at all
national and international HYDAC sales and
service centres.
Contact HYDAC head office:
HYDAC Systems & Services GmbH
Werk 13
Postfach 1251
D-66273 Sulzbach/Saar
Friedrichsthalerstr. 15
D-66540 Neunkirchen/Heinitz
Tel.: +49 (0) 6897 / 509-01
Fax: +49 (0) 6897 / 509-324
Internet: www.hydac.com
)
0

Customer Service

EN
35