Manual Axial fan AW C003

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Commissioning
8.3 Variable-speed fans
Warning
Resonant frequencies may result in increased vibration in certain speed ranges. These vibrations may
destroy components.
♦ Only operate the fan outside these speed ranges.
♦ Skip over these speed ranges.
♦ Pass through these speed ranges so quickly that any vibration cannot exceed the admissible resonant
frequency values.
9 Commissioning
Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is
provided.
Safety information
♦ Observe 2 Important safety information, page 1
Preconditions
♦ Installation and electrical connection have been
correctly performed.
♦ Before switching the fan on, check for externally
visible damage and ensure that the protective
equipment functions properly.
♦ Inlet and outlet are free.
♦ Cable glands are tight.
♦ Safety devices have been fitted.
Commissioning of speed-controlled fans
Check the fan for vibrations at all normal operation speeds during commissioning. Determine and evaluate vibrations
on the housing and bearing areas in accordance with DIN ISO 14694 depending on motor power and positioning.
Measurable vibration velocities depend e.g. on following factors:
• positioning
• bottom section/foundation state • flow conditions
The working point of the fan, as well as used external devices and accessories, also influence the running
characteristics.
Tests
Do the tests requested in the commissioning report (15 Commissioning Report, page 10)
10 Operation
Safety information
♦ Observe 2 Important safety information, page 1
11 Troubleshooting/maintenance/repair
Safety information
♦ Observe 2 Important safety information, page 1
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