Grundfos AMG Serie Instrucciones De Instalación Y Funcionamiento página 9

Key to certification details
Ex Explosion-proof motor
II Equipment Group II, non-mine
2G Category 2 equipment, for gas environment
For increased safety according to EN
eb
60079-7
Non-electrical safety according to EN ISO
h
80079-36 and EN ISO 80079-37
ib Intrinsically safe according to EN 60079-11
Maximum surface temperature of the motor is
T3
200 °C
IIC Gas Group, typical gas is acetylene
Gb Equipment protection level, zone 1
3. Safety
3.1 General safety instructions
WARNING
Electric shock
Death or serious personal injury
‐
Before starting any work on mixers or
flowmakers, disconnect the motor from
the supply or make sure that the fuses
have been removed or the main switch
has been switched off. Make sure that
the power supply cannot be switched
on unintentionally.
WARNING
Crushing hazard
Death or serious personal injury
‐
Make sure that all rotating parts have
stopped moving.
Follow the installation and operating in-
structions of this manual when transport-
ing, storing, handling and operating the
mixer or flowmaker.
Maintenance and service must be carried
out by qualified persons.
Make sure that persons cannot accidental-
ly fall into the tank.
3.2 Explosion-proof products
When using explosion-proof mixers and
flowmakers, observe the following safety
regulations.
Equipotential bonding
All explosion-proof mixers and flowmakers have an
external equipotential bonding terminal on the back of
the motor. A copper wire with a minimum cross
2
section of 4 mm can be connected to this terminal.
The power cable must be fixed,so it cannot be caught
in the propeller during operation.
Leakage sensor
With the Grundfos ALR-20/A-Ex relay, the leakage
sensor forms the basis of the Ex protection. The relay
must always be installed with explosion-proof mixers
and flowmakers. The relay must be ordered
separately.
Part number: 99794613 or 96489569.
As the leakage sensor is intrinsically safe, it must be
connected through the blue leads.
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