Commissioning
4.5 Commissioning of the separate fan
A5E01083943A AB
64 Siemens AG Operating Instructions 2.02 1FW4
4.5 Commissioning of the separate fan
Measures
Prior to the first test run check that:
● the fan has been correctly assembled and aligned in accordance with the instructions,
and in particular ensure that there is a uniform gap all around between the impeller and
the inlet nozzle,
● all of the retaining elements and electrical connections are securely tightened,
● the grounding and equipotential bonding connections to the mains have been correctly
made,
● the flow of air is not impeded or interrupted by covering flaps, covers or similar,
● there are no foreign bodies in the fan enclosure,
● all protection measures have been taken to prevent accidental contact with moving or live
parts.
Before switching on the fan for the first time, rotate it by hand first to check that the impeller
rotates freely. Briefly switch the motor on and back off to compare the actual direction of
rotation of the fan with the direction specified by the arrow. Reverse the poles of the motor if
the direction of rotation is incorrect. (Wrong direction of rotation of the fan leads to overload
and premature failure.) [ID 632.01]
4.6 Monitoring the temperature of the stator winding
Measures
In addition to the current-dependent overload protection device located in the connecting
leads, we recommend that you also monitor the temperature rise in the motor - and
consequently the winding temperature - with the aid of the temperature sensors embedded
in the stator winding. [ID 31.01]
4.7 Converter/insulation system
Description
Set 2.5 kHz as the operating pulse frequency. The insulation system of the winding is
designed for a maximum conductor-to-ground voltage of 1,500 V (peak-to-peak). If higher
voltages occur, change the configuration of the system, e.g., cable lengths and grounding
concept, in such a manner that these voltages are not exceeded during operation.
[ID 819.01]
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