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General Information
Description
The Marley Ultra Low-Noise series of fans represent the top in the
new generation of super low noise fans—the FRP blades have been
developed to meet the most stringent noise limitations. The fans
permit variable pitch adjustment at standstill and feature a simplified
design. Each blade is fixed to the hub with two bolted aluminum
pillow blocks.
Balancing
When the rotor is dispatched in assembled form, each unit is dy-
namically balanced within a degree of G = 6.3 in accordance with
ISO 1940/1.
When the fan is dispatched disassembled, the hub is dynamically
balanced and the blades are statically balanced so that the reas-
sembled unit correspond to a degree of G = 6.3 in accordance with
ISO 1940/1. In this case, the blades have the same static moment,
so that they can be positioned in any order on the hub; the blades
of the same supply, are interchangeable.
Storage
Upon unloading the fan, inspect it for any damage. If damage oc-
curred, file a claim immediately against the carrier and mark the bill
of loading accordingly.
After the fan delivery, check the full compliance between order and
delivered goods. Shortages or inconformities have to be reported
within two weeks from receipt of shipment at destination.
If not installed immediately, it is recommended to store the fan in
a dry and shaded area, and do not put any heavy materials of any
kind upon the blades. For long-term storage, it is necessary to check
the condition of the corrosion preventive coating on all machined
surfaces.