10
FAULT DETECTION
1. Make sure that there is power to the fan.
2. Cut the power and verify that the impeller is not
blocked.
3. Check the LED flashing code (do not apply for IRB
125 B1/160B1/200 C1/ 250 A1/250 B1/400x200
C1/500x250 A1/500x250 B1 EC). For more infor-
mation see page 11-12.
4. If nothing of this works, contact your fan supplier.
5. If the fan is returned to the supplier, it must be
cleaned, the motor cable undamaged and a detailed
nonconformity report enclosed.
WARRANTY
MAINTENANCE
• Before service, maintenance or repair begins, the fan
must be tension free and the impeller must have
stopped.
• Consider the weight of the fan when removing or
opening larger fans to avoid jamming and contu-
sions.
• The fan must be cleaned when needed, at least once
per year to maintain the capacity and to avoid unba-
lance which may cause unnecessary damages on the
bearings.
• The fan bearings are maintenance-free and should
be renewed only when necessary.
• When cleaning the fan, pressure wash or strong dis-
solvent must not be used. Cleaning should be done
without dislodging or damaging the impeller.
• Make sure that there is no noise from the fan.
OPERATION
When starting, make sure that:
• the current does not exceed more than +5% of what
is stated on the label.
• the connecting voltage is in between +6% to –10%
of the rated voltage.
• no noise appears when starting the fan.
• the rotation direction at 3-phase motors are accor-
ding to the label.
HOW TO HANDLE
• 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.
•Attention! Temperatures up to 85°C can be pre-
sent on the controller housing.
• Waiting period of at least 3 minutes!
Because of internal capacitors, danger of death exists
even after switching off the device through directly
touching the energized parts or due to parts that
have become energized due to faults.
The controller housing may only be removed or
opened when the power line has been switched off
and a period of three minutes has elapsed since swit-
ching it off.
• Avoid extreme heat or cold (temperature range for
storage and transport.
• Avoid prolonged storage; we recommend a maxi-
mum of one year (consult the manufacturer before
starting if stored for longer).
The warranty is only valid under condition that the fan
is used according to this “Directions for use” and a regu-
lar maintenance has been made and record. The war-
rantor is responsible only for the operation if approved
accessories are used. The warranty does not cover pro-
duct failures caused by accessories/equipment from
other manufacturers.
