13
Z2
U2
U1
Z1
L1 N
L1 N
Z2
U2
U1
Z1
W2
U2
V2
U1
V1
W1
W2
U2
V2
U1
V1
W1
(L3) (L1)
(L3) (L1)
L1 L2 L3
L1 L2 L3
Operating and assembly instructions SD
www.elektror.com
0241
18 07.16/06
EN
frequency converter must not exceed a length of
20 m, con
fi
gured as a suitable, shielded cable
and laid by as direct a route as possible, without
any additional plug/clamp connections.
• The braided screen in the connecting cable
must cover the full length of the cable on both
sides, i.e. be connected to the earthing system at
the frequency converter and to the motor using a
low electrical resistance. For this purpose, suit-
able EMC cable couplings must be used on the
motor side. They must contact the cable shield
around its full circumference and have a low
resistance.
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 Con
fi
guration for three-phase current side
channel
blowers
-circuit
Y circuit
(low voltage)
(high voltage)
Checking the direction of rotation
Switch on the side channel blower. The running direction of
the impeller should correspond to the direction arrow on the
housing. The direction of the air
fl
ow must also match the
directional arrows on the silencer housing. If the impeller ro-
tates in the wrong direction, then interchange L1 and L3.
Star-delta start-up
Motors with an output above 3.0 kW are provided at the sup-
ply mains for star-delta start-up. For direct on-line starting
(high short circuit current at the instant the motor is ener-
gised), please contact your local utility for details of condi-
tions.
3.3.2 Con
fi
guration for single-phase a.c.
side channel blowers
Clockwise rotation Anti-clockwise rotation
3.3.3 Special con
fi
gurations and additional clamps
Terminal diagrams can be found in the motor terminal box
for voltage interchangeable motors, pole-changeable mo-
tors, FU motors and other special con
fi
gurations of three-
phase a.c. and a.c. motors. This also applies to the optional
thermal winding protection and the space heater.
3.3.4 Con
fi
guration for units with attached frequency
converter
The mains connection with earthing conductor connection
and potential equalisation must be carried out in a profes-
sional manner in accordance with the speci
fi
cations in the
enclosed frequency converter assembly instructions.
3.4 Declaration concerning the EMC Directive
(2004/108/EC)
Our side channel blowers are components that are designed
to be installed in other machines or systems by quali
fi
ed per-
sonnel, i.e. not intended for consumers. The manufacturer
of the
fi
nal system/machine must guarantee/con
fi
rm that the
fi
nal system/machine complies with the EMC Directive.
Side channel 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 2004/108/EC, 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).
Side channel blowers with frequency converter opera-
tion (FU):
Prior to the start-up and during operation of the device on a
frequency converter (provided that this is suitable) it is es-
sential that the EMC instructions from the frequency convert-
er manufacturer and the information in the Elektror operating
and assembly instructions are observed in order to meet the
requirements of the EC “Electromagnetic Compatibility” Di-
rective 2004/108/EC.
If the device is delivered together with an Elektror switch cab-
inet frequency converter package, it is possible to comply
with the EN61800-3 category C2 (Industrial environments),
taking into consideration the above-mentioned EMC instruc-
tions.
Warning!
This product may cause high-frequency inter-
ference in a residential environment that may
require screening measures.
Side channel blowers with an in-built frequency convert-
er (FUK):
Devices with an in-built frequency converter meet the require-
ments of the EC “Electromagnetic Compatibility” Directive
2004/108/EC under consideration of EN 61800-3 Category
C2 (industrial environment), taking into account the EMC in-
structions 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.
4 INSTRUCTIONS FOR OPERATION
AND USE
4.1 Basic information
Please observe the notes on designated use in section 1.1,
as well as the safety guidelines in sections 1.2 to 1.12.
If electrical current drops below the rated current of the drive
motor during operation, check to see if the mains voltage and
frequency match the appliance ratings (nameplate).
After protective shutdowns, e.g. tripping of the motor circuit-
breaker, activation of the PTC evaluation unit by motors with
a PTC resistor sensor, or after a protective shutdown of the
