OSTBERG HERU 400-2400 S, User Manual, Page: 105 / 120

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Climatix HERU® 400-2400 2017-11-03
SERVICE Climatix HERU®
Fans
The safety switches must be switched off and locked after the unit has been switched off
before starting any service work.
Function
The function of the plug fans is to transport the correct amount of air in and out of the
premises. It is very important for both unit performance and operating costs that the
right airflow is maintained. An incorrect flow balance may cause the transfer of extract
air to supply air, cause damage to the building and lead to increased energy costs.
Careful inspection and care are therefore important.
Check
1. That the fan is rotating freely without catching in the inlet cone and that there is no
noise from the bearings.
2. That all electrical cables are securely connected and that the protective casing is
intact.
3. That the fan is not dirty.
4. That the vibration dampers are intact.
5. That the sealing strip between the inlet cone and the fan wall is intact; see image.
Correct as necessary.
1. Adjust inlet cone if necessary. Replace fan if there is a problem with the bearings.
2. Replace cables if necessary.
3. Clean fan with vacuum cleaner and damp cloth with a little detergent. Clean all
blades.
4. To remove the fans, loosen the triangular knob on the fan rails and pull out the entire
fan unit.