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D E S C R I P T I O N
IRB is an insulated in-line duct fan with backward cur-
ved impeller and swing-out design. It is available with
circular or rectangular connections.
The fan is equipped with ErP approved external
rotor induction AC or EC motor with maintenance-
free sealed ball-bearings. The fans are manufactured
from galvanized steel sheet.
E N G L I S H
A P P L I C A T I O N
• IRB is accessible for the user, according to IEC
60335-2-40, to by themselves do the service and
maintenance, according to this Directions for use.
But before this work the unit must be currentless.
With reservation according to IEC 60335-2-7.12
”This appliance is not intended for use by persons
(including children) with reduced physical, senso-
ry or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a
person responsible for their safety.”
”Children should be supervised to ensure that they
do not play with the appliance.”
• The fan is used for transportation of ”clean” air, mea-
ning not intended for fire-dangerous substances,
explosives, grinding dust, soot, etc.
• To achieve maximum life time for installations in
damp or cold environments, the fan should be ope-
rating continuously.
• The fan can be installed outside or in damp envi-
ronments. Make sure that the fan house is equipped
with drainage.
• The fan is intended to be used at the highest volta-
ge and frequency that’s stated on the label on the
fan.
• The fan can be installed in any position.
This directions for use contains following products:
IRB circular and rectangular.
Scan the QR code on the product label
or visit www.ostberg.com
for further information about the product.
H O W T O H A N D L E
• The fan must be transported in its packing until in-
stallation. This prevents transport damages, scrat-
ches and the fan from getting dirty.
• Attention, look out for sharp edges and corners.
• Avoid extreme heat or cold (temperature range for
storage and transport.
