Datasheet

ENGLISH
ried out upstream of the change-over switch; if this is not possible, detect the live current on any of the six wires at the terminal box
and multiply this value by 1,73. Avoid consecutive start-ups of the motor as this would cause continuous overloads, and overheat
the electrical parts. Before start-up, allow enough time to cool down.
Checkthebearingtemperaturesafterthefirsthoursofoperation,asthesearethemostcritical.Ifnecessary,stopthefanand
restart it only after reaching the ambient temperature. Then check that the temperature is lower than the previously measured
temperature.
By means of a vibrometer, check that the vibrations are not excessive by referring to the following paragraph.
After a few hours of operation, check that the vibrations have not slackened the tightness of the nuts.
IMPELLER BALANCING AND VIBROMETRIC CHECK
AlltheimpellersinstalledonthefansarebalancedincompliancewithstandardISO14694“IndustrialfansSpecificationsfor
balancequalityandvibrationlevels”,andwithstandardISO19401.
The fan vibration level is then tested, still in compliance with standard ISO 14694.
The in situ vibration level check must be carried out in compliance with standard ISO 14694, according to the fan category and
within the limits shown below.
Tabl e1– Fanapplicationcategories
Applications Examples Motor power limits Application
category
Residential use Ceiling-mounted, wall-mounted and AC
windowfittedfans
≤0,15
≥0,15
BV-1
BV-2
HVAC and agricultural use Ventilation and air conditioning of residential
and commercial buildings
≤3,7
≥3,7
BV-2
BV-3
Industrial and energy production
processes, etc.
Airfilteringrooms,mines,convections,combu
sted air, pollutant control, wind tunnels
≤300
≥300
BV-3
See ISO 10816-3
Maritimeandtransportfields Locomotives, road transport vehicles, cars ≤15
≥15
BV-3
BV-4
Transit/tunnel Underground emergency ventilation, tunnel
and garage fans, tunnel jet fans.
≤75
≥75
None
BV-3
BV-4
BV-4
Petrochemical process Noxious gases, process fans. ≤37
≥37
BV-3
BV-4
IT chip production Sterile environments None BV-5
Tabl e2– vibrationlimitsfortestscarriedout in situ
Condition Application
category
Hard mounting
mm/s
Flexible mounting
mm/s
peak r.m.s. peak r.m.s.
Start-up BV-1 14,0 10 15,2 11,2
BV-2 7,6 5,6 12,7 9,0
BV-3 6,4 4,5 8,8 6,3
BV-4 4,1 2,8 6,4 4,5
BV-5 2,5 1,8 4,1 2,8
Alarm BV-1 15,2 10,6 19,1 14,0
BV-2 12,7 9,0 19,1 14,0
BV-3 10,2 7,1 16,5 11,8
BV-4 6,4 4,5 10,2 7,1
BV-5 5,7 4,0 7,6 5,6
Stop BV-1 Note 1 Note 1 Note 1 Note 1
BV-2 Note 1 Note 1 Note 1 Note 1
BV-3 12,7 9,0 17,8 12,5
BV-4 10,2 7,1 15,2 11,2
7,6 5,6 10,2 7,1
Note 1 The switching off levels for fans belonging to BV-1 and BV-2 grade application must be established according to
their history
Itisrecommendedtousethe“r.m.s.”values–Valuesinmm/sunfiltered
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