6
from its own. It is considered as part of the pump and the ATEX code for the pump is applicable,
meaning it can operate under the same ATEX environment as the pump it is attached to. In general
this means the damper is suitable for Group II, category 2 and temperature class T4.
When operating under ATEX pay extra attention to the following:
Pulsation Damper to be installed, operated and maintained according this manual (see chapter
Make sure the damper is connected to the earth. In general this is the case when the damper is
connected to the pump and the piping system. By construction all parts are electrically connected.
This can be checked by measuring the electrical resistance to the earth. The electri cal resistance
to any ground connection should be less than 1 MOhm.
WARNING
In case it is not possible to create an earth/ground connection with less than 1 MOhm,
one should make an additional PE (protective earth) connection to the pulsation
damper. (see chapter
5 INSTALLATION AND COMMISSIONING
).
2.5
Responsibility
The manufacturer does not accept any responsibility for damage or harm caused by not (strictly)
observing the safety regulations and instructions in this manual or by negligence during installation,
use, maintenance and repair of the pulsation dampers mentioned on the front cover. Depending on
the specific working conditions or accessories used, additional safet y instructions can be required.
Immediately contact your Bredel representative, if you notice a potential danger while using your
pulsation damper.
WARNING
The user of the pulsation damper is always fully responsible for observing the local
valid safety regulations and directives. Observe these safety regulations and
directives when using the pulsation damper.
2.6
Qualification of the user
The installation, operation and maintenance of the pulsation damper should be carried out by well
trained and qualified users. Temporary staff and persons in training may only use the pulsation
damper under the supervision and responsibility of well trained and qualified users.
2.7
Regulations and instructions
Everyone who works with the pulsation damper must be aware of the content of this manual and
observe the instructions with great care.
Never change the order of the actions to be carried out.
Always store the manual near the pulsation damper.
