Product Information - HYDAC International QHP Instrucciones De Servicio

Product Information

For Gas-loaded Piston accumulators
1. General
Piston accumulators are pressure vessels
as defined in the pressure equipment
directive 2014/68/EU. They are closed
GB
vessels which are designed and built to
store fluid under pressure. Piston
accumulators are hydraulic accumulators,
charged with nitrogen, for use in
hydraulic systems. The piston acts as the
gas-proof screen. Hydraulic accumulators
are exclusively designed to store and then
discharge fluid under pressure.
The regulations for commissioning and
operating hydraulic accumulators which
are in force at the place of installation
must be observed.
The plant operator is exclusively
responsible for ensuring compliance with
these regulations.
2
3
Gas Valve
7 Grub Screw
1 Gas End Cap
6 End Cap Seal
4 Piston
8
Wear Ring
9 Piston Seal
8 Wear Ring
5 Cylinder
6 End Cap Seal
2 Fluid End Cap
7 Grub Screw
The certificate of conformity and any
other documents supplied with the
accumulator should be carefully stored at
the place of installation for the
subsequent recurrent testing.
Apart from installation and
commissioning, if additional work, repair
etc. are to be carried out on the piston
accumulator, comprehensive repair and
maintenance instructions are available for
this. They can be sent to you on request.
WARNING:
All work on hydraulic and pneumatic
connections to the accumulator must
only be carried out by suitably trained
staff. Improper installation or handling
can lead to serious accidents.
Before any work is carried out on
hydraulic equipment, the hydraulic
system must be de-pressurized, including
gas pre-charge.
On no account must any welding,
soldering or mechanical work be carried
out on the accumulator.
DANGER of explosion if welding
or soldering is carried out!
Danger of bursting, and loss of operating
permission if unauthorized mechanical
work is carried out on the accumulator.
CAUTION:
The accumulator shell can become hot.
Risk of burns.