Image 7-1 External fan with cover sheet ①
7.6 Switch on
Trial run
If the period between installation and commissioning is expected to be fairly long, make sure
that water-cooled machines undergo a test run without water cooling.
Procedure
● Start up the motor without a load, temporarily. Check the direction of rotation at this point.
● As the motor is coasting down, check the mechanical operation for noise and vibration at
the bearings and bearing shields.
● Where the motor is running without any mechanical problems, switch it back on again.
Continue to the maximum speed allowed (according to the rating plate).
● In case of uneven running or abnormal noise, switch off the machine. Determine the cause
as it coasts.
● If the mechanical operation improves immediately after the motor is switched off, the cause
is magnetic or electrical.
Commissioning
7.6 Switch on
SIMOTICS DC 1GG5
Operating Instructions 02/2016 65
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