Electrical Connection - Grundfos SMD Installation And Operating Instructions Manual

B
31
18
Top fixation bracket with lifting and safety wires and
cable sock
Pos. Description
B Bolts
18 Cable sock
20 Fixation bracket
31 Hole for fastening a safety wire
Remove the lifting wire from the crane
before starting the flowmaker.
23. Remove the lifting wire from the winch and fit it to
the wire clamp (20 in fig. Top fixation bracket with
lifting and safety wires and cable sock) on the top
fixation bracket. Coil up additional lifting wire and
fasten it by a strap.
24. Use the lifting wire as a relief for the power cable.
Always tighten the lifting wire. See fig. Attaching
the power cable to the lifting wire.
25. Check the distance between the propeller and the
wall, and the propeller and the bottom of the tank
when the motor bracket is resting on the depth
blocker. The flowmaker must under no
circumstances touch other installations, the
bottom or the wall.
DANGER
Electric shock
Death or serious personal injury
‐
Before making any electrical con-
nections, make sure to remove the
fuses or switch off the main switch.
Make sure that the power supply
cannot be switched on unintention-
ally.
26. Connect the power cable to the terminals in the
control cabinet.

6. Electrical connection

20
Observe all national and local regulations relating to
safety and accident prevention.
Observe the safety instructions in section Explosion-
proof versions.
The supply voltage and frequency are marked on the
nameplate. Make sure that the mixer or flowmaker is
suitable for the power supply available at the
installation site.
The mixer or flowmaker is supplied with a power
cable. Standard cable length is 10 m, longer cables
are available on request. See section Technical data.
The motor is marked either with a star (Y) or a delta
( Δ). For 10- and 11-wire cables, this connection must
be made in an external control panel using
conductors 1 to 6 of the power cable.
Figure Schematic drawing of delta and star
connection shows a schematic drawing of these star
and delta connections. See also section Wiring
diagrams for SMG and SFG.
If the mixer or flowmaker is connected in delta during
operation, it can be started in a star-delta connection.
Electrical connections must be carried out
by a qualified electrician in accordance
with local regulations.
WARNING
Sharp element
Death or serious personal injury
‐
Mixers and flowmakers must be instal-
led with an external "supply discon-
necting device", manufactured accord-
ing to EN 60204-1 §5.3.2, that permits
the mixer or flowmaker to be locked in
the OFF (isolated) position. This device
must be installed in a position that con-
forms with EN 60204-1 §5.3.4.
DANGER
Electric shock
Death or serious personal injury
‐
Before making any electrical connec-
tions, make sure to remove the fuses
or switch off the main switch. Make
sure that the power supply cannot be
switched on unintentionally.
The explosion-protection classifications of
the SMD mixer are II 2G Ex db h IIB T4 Gb
and II 2G Ex db h ib IIB T4 Gb. The classi-
fication of the installation site must be ap-
proved by the local authorities.
For the electrical installation, the standard
EN 60079-14 must be complied with.
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