Checks before the rst test run
Before the rst test run, carry out the following checks:
• The separately driven fan is correctly tted and aligned.
• The rotor runs freely.
• 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 air ow is not impeded or shut o by aps, covers or similar.
• If the cooling air is in open circulation, it has only weak, chemically abrasive properties and
a low dust content.
• All protection measures have been taken to prevent accidental contact with moving or live
parts.
Performing the test run
1. Switch the separately driven fan motor on and o briey.
2. Compare the direction of rotation of the separately driven fan with the specied direction of
rotation. The direction of rotation of the separately driven fan is indicated with an arrow on
the fan cover specifying the direction of rotation or with a terminal designation on the rating
plate of the separately driven fan unit.
Depending on the version, the fan impeller is visible through the air inlet opening in the fan
cover on the separately driven fan motor.
3. If the direction of rotation is incorrect, then interchange 2 phase conductors in the separately
driven fan motor terminal box.
Note
Use these operating instructions for motors with external fans.
7.1.4 Further documents
Note
Further documents
Observe all of the other documents provided with this machine.
Commissioning
7.1Measures before commissioning
1MB..1/2/3/4 - shaft heights 63 ... 355
98 Operating Instructions, 11/2023, A5E52779900A
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