Datasheet

ENGLISH
bearing damage. The manufacturer shall not be responsible for damages to drive parts caused by prolonged fan inactivity. Do
not store fans near machines which generate vibrations, to avoid the bearings from being subject to the same type of stresses.
Special care must be taken when handling large impellers or shafts, if they are received disassembled for transport reasons, to
avoid balancing problems.
In case of prolonged storage, ensure the fan is protected from dust, humidity and ultraviolet rays.
5. INSTALLATION AND START-UP
INSTALLATION
WARNING:Theinstallationmustbecarriedoutonlybyqualifiedstaff.
Startbyremovingthefanfromitspackagingorfromthepallet,thendisposeofthepackagingandofallitspartsinareasspecifi
cally designated for waste disposal (waste disposal sites etc..). Never leave parts of the packaging and plastic bags within reach
of children or people who are unable to understand the associated dangers. Use personal protective equipment (gloves etc...) as
prescribed by Directive 89/686/EEC and later directives.
User lifting equipment suitable for the fan weight and size.
Use tie rods of suitable length and of the right quantity and latch them in the slots provided on the fan frames. If necessary, use the
motorliftingeyeboltsinordertoavoidloadimbalanceifthemotorweightissignificant. It is strictly forbidden to lift the whole
fan using only the motor latching points.
Donotliftthefanfromtheshaft,themotorortheimpeller.Themachineisnormallyshippedassembled,fixedtoapalletand
always protected from the elements. Only use the latching points provided for lifting the fan by evenly spreading the load. Avoid
uncontrolled rotations.
The weight of each fan is shown in the enclosed technical datasheet.
Checkthattheimpellerhasnotbeenknockedordeformedduringtransport,issecurelyfixedtoitsrotationshaft,isabletofreely
turn around its axis and that no foreign body is interfering with the impeller operation.
The user must provide a suitable support surface for the dimensions and weight of the fan and well levelled in order to avoid de-
formations which could damage the frame of the fan.
When installing the fan on steel structures, it is essential to ensure that these structures have a natural minimum frequency hi-
gherthan50%ofthefanspeed.Inordertoavoidthatthevibrationsaretransferredthroughthefoundation,itisadvisabletofit
antivibrationmountingsinsuitablepoints.Thefanmustbefixedinthepointsprovidedbypayingspecialattentionnottodeform
the structure. The systems connected must be separately supported and must be located on the same axis as the fan entrances
to avoid stresses on the fan with needless tensions which could deform the structure. It is recommended to connect the fan by
means of couplings able to reduce vibrations generated by the fan.
Securelyfixthefanbyinsertingscrewswithsuitablediameterandcorrectlytightened,inallthefixingholesprovided.
WARNING: when access to entrances (moving parts) is not ducted or protected with other means, a safety net must be
fi t t e d  i n  c o m p l i a n c e  w i t h  s t a n d a r d  E N  I S O  1 2 4 9 9  a n d  l a t e r  s t a n d a r d s  ( a c c e s s o r y  s u p p l i e d  o n  r e q u e s t ) .
WARNING: the fan outlet must NOT be located in areas occupied by people or animals, in order to avoid that objects or
impurities, even if small, could be ejected at high speed and cause injuries.
In order to ensure the correct operation of the fan, it is recommended to make sure certain distances are maintained, such as 1.5
times the impeller diameter as the distance from a wall for free mouth inlets, 2.5 times the impeller diameter as distance from the
fi r s t  b e n d  f r o m  t h e  f a n  b e l l  m o u t h ;  t h e  s a m e  a p p l i e s  f o r  o u t l e t  o r  i n l e t  d u c t s ;  p l e a s e  n o t e  t h a t  i t  i s  a d v i s a b l e  t h a t  t h e  b e n d s  h a v e  a 
minimuminternalbendradiusequaltothepipediameter.Theinstallerand/orfinalusermustprovidethesuitablemotorventilation
equipment when a suitable heat exchange cannot be ensured such as in the event of prolonged inactivity, when the motor works
at high temperatures, or when used by means of frequency regulators. If the motor is not adequately cooled, its features can be
negativelyaffectedandpossiblyleadtoitsbreakage;therefore,inthisevent,themanufacturer’swarrantywillbecomevoid,as
well as the warranty granted by the motor manufacturer.
WARNING: Do not remove the guards; removing any of the guard even when the machine has stopped can lead to dan-
gerous conditions
WARNING: Adhere to the minimum installation distance; when performing maintenance operations, confined spaces
cause hazards and problems.
IT IS FORBIDDEN TO COMMISSION THE MACHINE WITHOUT MAKING SURE IT IS IN PRISTINE CONDITIONS.
Before starting any installation, make sure the machine is safe and, if necessary, make it safe. The fan must be installed by ensu-
ringthesurroundingspaceissufficienttoallownormalfitting/removing,cleaningandmaintenanceoperationstobecarriedout.
The following guidelines should be adhered to when carrying out the installation:
The surface selected to support the fan static, dynamic load and inherent frequency must be level and sturdy. When the inhe-•
rent fan frequency coincides with the natural frequency of the mounting, both frequencies act alongside each other, leading
toaconditionofresonance:theamplitudeofoscillationswillincreasinglygrowtoinfinity,andthestructurewillbesubjectto
ever growing deformations. In this case, the fan mounting must be changed in order to change its natural frequency of reso-
nance. Sometimes, a resonance is generated only in transistors, i.e. when starting or stopping machinery. Resonance must
be avoided whenever possible. For industrial, high speed fans, using reinforced concrete slabs is recommended.
Vibrationreductioncomponentsmustbeinsertedbetweenthefananditsinterfaces(floorandpipes)(suitablysizedantivi•
bration mountings and antivibration couplings). The mountings should not be fully squeezed and should be able to support
a basic frame instead of the single fan components. When selecting the mountings, it is recommended to contact the ma-
nufacturer.Innearlyallcases,thefansaresuppliedpreassembledandtherefore,beforeinstallation,itissufficienttocheck
the tension of any belts, the condition of the bearings, the level of the fan and, generally speaking, all components. If the
fan should be shipped disassembled for transport reasons, the manufacturer must enclose suitable instructions to correctly
assembleit;theassemblingoperationmustbecarriedoutbyaqualifiedperson.Thedesignandexecutionoftheconnection
between the fan and the power mains must be carried out by an experienced electrician. Beyond 5.5kW, a star delta, inverter
orothertypeofgradualstartupmustbefitted.Itisrecommendedtofitachokervalvetoreducethestartuppowerinput.
The fans can have very long start-up times and power input peaks equal to the electric motor nameplate amperage highest
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