Grundfos NB Serie Instrucciones De Instalación Y Funcionamiento página 4

CONTENTS
1. General information
2. Related installation and operating instructions
3. Scope of ATEX categories for NB, NBG, TP, TPD
pumps
4. Identification
5. Before starting an ATEX-approved pump
Before beginning installation procedures, these
instructions and the installation and operating
instructions for the standard pump should be studied
carefully. The installation and operation should also
be in accordance with local regulations and accepted
codes of good practice.
1. General information
For ATEX-approved Grundfos NB, NBG, TP, TPD pumps, these
supplementary installation and operating instructions must be
observed.
The NB, NBG, TP, TPD pumps have been approved according to
the EC directive 94/9/EC, the so-called ATEX directive.
The pumps can be used in areas (zones) classified according to
the directive 1999/92/EC. In case of doubt, please consult the
above-mentioned directives or contact Grundfos.
2. Related installation and operating instructions
In addition to these instructions, the following installation and
operating instructions must be observed:
- NB, NBG
- TP, TPD
- TP
3. Scope of ATEX categories for NB, NBG, TP, TPD pumps
Directive
94/9/EC
1)
1999/92/EC
NB, NBG, TP, TPD pumps
1) Important: The link between groups, categories and zones is
explained in 1999/92/EC. Please note that this is a minimum
directive. Some EU countries might therefore have stricter
local rules. The user or installer is always responsible for
checking that the group and category of the pump correspond
to the zone classification of the installation site.
2) Note: The risk assessment done by Grundfos on the NB,
NBG, TP, TPD pumps for category 3 G shows that the pump
can be upgraded to category 2 G by installing an ATEX-
approved dry-running protection.The dry-running protection
must stop the pump if the minimum flow rate cannot be main-
tained. Always check that the motor is marked for category 2
G. Make sure that the combination of "NB, NBG, TP, TPD" and
"dry-running protection" is described in the Explosion Protec-
tion Document according to the directive 1999/92/EC.
The responsibility rests with the installer/owner.
In case of doubt, please contact the local authorities.
4
Page
ATEX-approved NB, NBG, TP, TPD pumps
Group I
Category M Category 1
1 2 G
Zone 0
None None None
4
4
4
5
5
Group II
Category 2
2)
D G
Zone 20 Zone 1
NB, NBG, TP,
None
TPD pumps
Category 3
D G
Zone 21 Zone 2 Zone 22
NB, NBG, TP, NB, NBG, TP,
None
TPD pumps TPD pumps
D