SystemAir 94729, Installation And Operating Instructions Manual

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Commissioning | 9
If the overheating cut-out has been activated, observe
the following steps
1. Observe the 5 rules of electrical safety, see 2.3 5 rules
of electrical safety , page 2.
2. Investigate carefully the reason for activation of the
cut-out.
3. When the fault has been eliminated, the Reset-
button* can be pressed.
*Reset- button
9.3 Variable-speed fans
Warning
Resonant frequencies may result increased vibration in certain speed ranges. These vibrations may destroy
components.
♦ Only operate the fan outside these speed ranges.
10 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 (17 Commissioning Report , page 14)
11 Operation
Safety information
♦ Observe 2 Important safety information , page 1
199495 | 001