Parker CE Instructions De Service page 21

Catalogue MSG10-4021/EU
GB
Before carrying out any work on the hydraulic
system, ensure that it is depressurized.
Incorrect installation may result in serious accidents.
Explosion hazard and/or danger of bursting!
It is strictly forbidden to:
• weld, solder, drill, or perform any other operation
that may change any mechanical properties!
• modify the accumulator or its components without
the prior written agreement of Parker.
For further information about the commissioning or
use of the accumulator, contact Parker or an approved
Parker agent.
6.1 Commissioning Recommendations
6.1.1 Inflation pressure P0 - Maximum allowable
inflation pressure :
The inflation pressure (P0) is calculated according to the
operating conditions indicated by the customer.
On some models, the maximum allowable inflation
pressure is indicated on the accumulator.
The accumulators are supplied as follows:
• Ready for use, inflated to P0.
• Inflated between 2 and 5 bar (storage pressure):
in this case, the accumulator must be inflated to
P0 before it is put into service (see 6.2).
6.1.2 Inflation gas :
Use only pure nitrogen at minimum 99.8% class 2.8
except for piston accumulators for which pure nitrogen
at minimum 99.99% class 4 must be used (to ensure
protection against corrosion).
It is strictly forbidden to use oxygen or air to inflate
the accumulator! RISK OF EXPLOSION!
6.1.3 Maximum allowable pressure PS :
Allowble maximum pressure (PS) is indicated on
the accumulator.
Check that the maximum allowable pressure is greater
than that of the hydraulic system. For any other
pressure, you will have to contact Parker.
6.1.4 Allowable temperature range Service
Temperature :
Allowable temperature range (Service Temperature) is
indicated on the accumulator. Check that the allowable
temperature range covers the operating temperatures
(environment and hydraulic fluid temperatures). For any
other temperature, you will have to contact Parker.
6.1.5 Hydraulic fluid used :
The accumulator materials are determined according to
the hydraulic fluid used.
Check that the fluid is compatible with the equipment.
It is strictly forbidden to use an accumulator with a fluid
for which it is not designed.
A fluid group 1, in particular, must not be used in an
accumulator designed to use fluid group 2 .
The authorized fluid group (1 or 2) is indicated on the
manufacturer's nameplate of the accumulator.
For fluid group 1 classification, refer to article 13 in
the PED 2014/68/EU. Fluid group 2 concerns all other
mediums which are not included in fluid group 1.
When a fluid group 1 (dangerous) is used, all possible
safety precautions must be taken in accordance with
current site regulations.
For further information, contact Parker.
6.1.6 Installation site :
Ensure that the labels and markings are clearly visible.
Leave at least 200 mm above the inflation valve for the
checking and inflation instruments.
Where the model used is fitted with a bleeder screw,
ensure that this is fully accessible.
Take the environmental conditions into account and,
if necessary, protect the accumulator against heat
sources, electric and magnetic fields, lightning,
moisture, bad weather and so on.
For optimum performance, place the accumulator as
close as possible to the unit being used, and install it
vertically with the inflation valve upwards.
The accumulator can also be mounted horizontally in
certain conditions (refer to the Annex 1).
6.1.7 Mounting :
Mount the accumulator as follows:
• Ensure that the pipes connected directly or
indirectly to the accumulator are not subjected to
any abnormal force,
• Ensure that the accumulator cannot move, or
minimize any movement that may occur as a
result of broken connections.
Parker clamps and brackets are designed for this
purpose (and can be supplied as optional extras).
The accumulator must not subjected to any stress or
load, in particular from the structure with which it is
associated. Contact Parker in case of mounting on the
movable structures.
6.1.8 Final check before startup :
The pre-startup check must be carried out in
accordance with current site regulations.
6.2 Inflation
The accumulator must be inflated at P0 before start up.
All inflation operations must be carried outo according
to the following process:
• The accumulator must be immobilized. Define
a safety area outside the alignment with
the openings (hydraulic and nitrogen side):
beware of the risk of part ejections, which
can occur in case of component breakage.
• Use a Parker checking and charging set (refer to
the instructions on how to use the latter) to inflate,
deflate and check the inflation pressure P0. Parker
checking-inflation tools (supplied as optional
extras)are used to inflate, deflate and check the
pressure of the accumulators.
21
CE User Manual
Accumulators
Parker Hannifin
Accumulator and Cooler Division Europe
Paris, France