Hydac SK Series, Operating Instructions Manual

Page: 47 / 97

GB
47
INT 3.301.BA4/05.16
6. Service life
Like all pressure vessels, HYDAC piston
accumulators have a finite service life. The
service life is dependent on the cyclic test
pressure and on the number of load reversals.
The permitted load reversals are specified in
the Declaration of Conformity. The authorised
representative can use this data to determine
the operating life of the piston accumulator
(housing strength) depending on the operating
conditions of the hydraulic system.
Instructions for the disposal of
hydraulic accumulators
DANGER
Before carrying out any work on hydraulic
accumulators, the relevant safety precautions
must be taken.
Re-chargeable versions:
– Depressurise the fluid side.
– Release pre-charge pressure.
–
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.
Non-re-chargeable versions:
– Depressurise the fluid side.
– Secure the hydraulic accumulator.
NOTE
When releasing the pre-charge pressure on
non-re-chargeable hydraulic accumulators,
ear defenders, goggles and gloves must be
worn.
– Release pre-charge pressure by drilling a
hole in the piston via the fluid side (≤ 4 mm).
– Remove closing elements (e.g. valves/plugs)
on the gas and fluid sides.
– Dispose of the hydraulic accumulator.
7. Customer Service
Service, repeat testing and repairs can be
carried out at the HYDAC head office:
HYDAC Service GmbH
Servicenter - 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
or at all national and international HYDAC
sales and service centres.
NOTE
Key to fold-out pages:
4 I = Charging and testing unit
4 II = SAF circuit diagram
5 III = Torque values