Cleaning the fans of the inverter

Qualified person

If the performance of the fans is decreasing, it can be restored by cleaning the fans. Indications of a reduction in fan performance are e.g. unusual fan noise or unusual derating behavior.

Procedure:

  1. Disconnect the inverter from all voltage sources ( > Disconnecting the Inverter from Voltage Sources).
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  2. Unlock the fan bracket on the right and left of the product. To do so, press in the locking tabs and push them upwards.
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  3. Move the fan bracket upwards and fold it backwards. When doing this, note that the fan bracket cannot be removed completely, because the fan cable connects it to the product.

  4. NOTICE

    Damage to the fans due to compressed air

    1. Clean the fans with a soft brush, a paint brush, or a damp cloth.
  5. If the cooling fins are dirty, clean them using a soft brush.
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  6. Insert the locking tabs on the left and right of the fan bracket into the recesses and the top into the suspensions.
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  7. Guide the fan bracket on the enclosure vertically downwards into the enclosure brackets provided.
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  8. Press the fan bracket firmly downwards so that the locking tabs engage on the right and left.
  9. Recommission the inverter.

    Also see:

    Replacing the Surge Arrester
    Checking the fans of the inverter