Datasheet

ENGLISH
multiplier; the whole electrical system must therefore be sized in relation to the duration and start-up power inputs.
ELECTRICAL CONNECTION
WARNING:Theelectricalconnectionmustbecarriedoutbyqualifiedstaff.
Check that the power voltage values printed on the motor nameplate match with the data on the power line it is connected to. To
connect the motor, refer to the electrical diagram included in the connection box.
The user must electrically connect the fan to earth: a correct earthing of the motor and the controlled machine avoids tensions and
eddycurrentsinthebearings.Itisrecommendedthatthemotorscontrolledbymeansofanelectricfrequencyinverterarefitted
with PTC protection thermistors against motor overtemperatures. Using electrical frequency converters can increase vibrations
and noise levels.
WARNING: in case a fan is installed away from the control panel and/or location, a service multipole switch must be
provided near the fan itself (accessory supplied on request). In fact, routine maintenance operations may require the fan guards
to be removed. Given the high risk associated to this condition, in compliance with Standard EN ISO 12499 relating to fan me-
chanicalsafety,anotherswitchmustbefittednearthefantoallowmaintenanceengineerstodirectlycontrolthepowersupply
connected to the fan.
Select the safety system and the power cables (voltage reduction during the start-up stage must be less than 3%) according to the
technicalfeaturesprintedonthemotornameplate.Intheeventoffire,therangeoffumesandheatextractorfansmustbefitted
with an automatically and separately activated safety electrical system. Make the connection according to the diagram shown on
thenameplateorcontainedintheterminalbox.Tightenthenutsfittedontheterminals,cableendsandpowercablestothetorque
value (Nm) shown below.
Terminal M 4 M 5 M 6 M 8 M 10 M 12 M 14 M 16
Steel 2 3,2 5 10 20 35 50 65
Brass 1 2 3 6 12 20 35 50
Donotinsertwashersornutsbetweenmotorcableendsandinputcablesends(figurebelow).
WARNING: it is compulsory for the installer to connect the fan to the electrical power supply and to install it in the envi-
ronment where it will be used in compliance with current standards (IEC 60364). Thermal cutouts: check the type of cutout
installed before carrying out the connection; for thermistors, a special release relay is required.
WARNING: To use thermal cutouts, take the required measures in order to avoid hazards associated with a sudden re-
start. Any anti condensation resistors (heaters) must be supplied by separate power lines. They cannot be powered with the motor
in operation. Do not connect the motor in case of doubts on how to interpret the connection diagram or, if the connection diagram
is missing, contact the manufacturer. All motors used are full voltage direct start type or delta-triangle start type for powers higher
than 5.5kW. In any case, the connection diagram provided with the motor is the diagram to be followed, which is inside the motor
connection box.
START-UP
OPERATIONS TO CARRY OUT BEFORE START-UP:
Check the tightness of all nuts and bolts (with special attention to the locking screws of the impeller on the shaft, of the motor and
the mountings) and the alignment.
Check that the fan blade turns freely by turning it manually.
Checkthatanyshuttersorflowrateregulatorsareintheopenpositionforaxialfans,closedforcentrifugalfans.Duringthestart
up stage, this operation avoids dangerous motor overloads.
Check the lubrication of moving parts.
For indirectly driven fans, check the belt tension, as shown in the technical datasheet.
Checktheinsulationresistancebetweenthewindingsandearth,whichmustbe,withwindingat25°C,higherthan10MΩ.Lower
values normally indicate that there is condensation in the windings. Should this happen, ask a specialised company to dry it.
WARNING: Do not touch the terminals during and immediately after the measurement as the terminals are live.
Note the impeller direction of rotation shown by the arrow (if provided) located on the impeller blades or on the fan itself.
The installer must interface the machine with the required start-up/stop controls, emergency stop, reset after an emergency stop
by complying with current standards (EN 60204-1, EN 1037, EN 1088, EN 953).
WARNING:Thefan frame must beearthed; furthermore,it must be verifi ed that allits components havethe samepo
tential.
The installer must connect the fan to the earthing circuit and check the potential is effectively the same on all its components
before starting the machine.
OPERATIONS TO BE CARRIED OUT AFTER START-UP:
Check that the direction of rotation matches with the direction shown by the arrow.
Checkthattheinputcurrentdoesnotexceedthecurrentshownontheproductidentificationlabeland/ormotornameplate.To
have a reliable information, allow a reasonable period of stabilising time. In the delta/triangle connection, the reading must be car-
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