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www.elektror.com
Operating and assembly instructions RD
9016306 06.22/17
EN
without clamping and plug-in connections and
connected correctly at both sides.
• The shielding braid in the connecting cables
must be connected fully, continuously and on
both sides, i.e. to the frequency converter and
motor, and at low resistance and permanently to
protective earthing systems or the main earthing
bus bar. Suitable EMC cable glands must be used
for this on the motor side and also on the INVEOR
wall mounting plate, if necessary.
• It is important to ensure that the solid con-
nection of the device to the protective earthing
system or several suitable earthing lines is at low
resistance and permanent for blowers installed
with electrical insulation (e.g. through vibration
dampers, compensators, insulated pipes, etc.) for
frequency converter operation.
For further information about EMC compliant installation and
assembly, refer to the Operating and Assembly Instructions
issued by the frequency converter manufacturer.
3.3.1 Confi guration for three-phase a.c. blowers
Warning!
Danger due to loose or improperly tightened con-
nections!
Improperly tightened and loose connections
cause electric shocks, fi res, property damage and
personal injuries!
Check for loose connections and tighten in accord-
ance with the tightening torques in the following table.
circuit Y circuit
(low voltage) (high voltage)
Threaded bolt Tightening torque
M4 1,2 Nm
M5 2,0 Nm
M6 3,0 Nm
M8 6,0 Nm
Checking the direction of rotation
Switch on the blower. The running direction of the impeller should
correspond to the direction arrow on the housing. If the impeller
rotates in the wrong direction, then interchange L1 and L3.
Star-delta start-up
Motors with ratings of above 3.5 kW are suitable for star-delta
start-up on the mains supply. For direct on-line starting (high
short circuit current at the instant the motor is energised),
please contact your local utility for details of conditions.
3.3.2 Confi guration for single-phase a.c. blowers
Clockwise rotation Anti-clockwise rotation
3.4 Special confi gurations and additional clamps
Terminal diagrams can be found in the motor terminal box for
voltage interchangeable motors, pole-changeable motors,
FU motors and other special confi gurations of three-phase
a.c. and a.c. motors. This also applies to the optional thermal
winding protection and the space heater.
3.5 Declaration concerning the EMC Directive (2014/30/EU)
Our blowers are components that are designed to be in-
stalled in other machines or systems by qualifi ed personnel,
i.e. not intended for consumers. The manufacturer of the
fi nal system/machine must guarantee/confi rm that the fi nal
system/machine complies with the EMC Directive.
Blowers with mains operation:
With mains operation to a sinusoidal AC voltage, the asyn-
chronous motors with a squirrel-cage rotor that are built into
the devices meet the requirements of the EC “Electromag-
netic Compatibility” Directive 2014/30/EU, taking into ac-
count the standards EN 61000-6-4 (Emitted interference in
industrial environments) and EN 61000-6-3 (Emitted interfer-
ence in residential environments).
Blowers with frequency converter operation (FU):
Prior to the start-up and during operation of the device on a fre-
quency converter (provided that this is suitable) it is essential
that the EMC instructions from the frequency converter manu-
facturer and the information in the Elektror operating and assem-
bly instructions are observed in order to meet the requirements
of the EC “Electromagnetic Compatibility” Directive 2014/30/EU.
If the device is delivered together with a frequency converter
package for switch cabinet or wall mounting closer to the mo-
tor, it is possible to comply with EN 61800-3 category C2 (In-
dustrial environments), taking into consideration the above-
mentioned EMC instructions.
Warning!
This product may cause high-frequency inter-
ference in a residential environment that may
require screening measures.
Blowers with an in-built frequency converter (FUK):
Devices with an in-built frequency converter meet the re-
quirements of the EC “Electromagnetic Compatibility” Direc-
tive 2014/30/EU under consideration of EN 61800-3 Catego-
ry C2 (industrial environment), taking into account the EMC
instructions from the frequency converter and the information
in the Elektror operating and assembly instructions.
Warning!
This product may cause high-frequency inter-
ference in a residential environment that may
require screening measures.
A CE conformity assessment with the relevant standards and
guidelines must be carried out in all cases before the start-up.
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