1 General
B 1091 en-3118 13
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1.3.2 Installation
• After installation, screwed-on lifting lugs must be tightened or removed.
• Smooth running: Precise alignment of the clutch and a well-balanced drive element (clutch, pulleys,
fan, etc.) are prerequisites for smooth vibration-free running.
• Complete balancing of the motor and the drive elements may be necessary.
• The top section of the terminal box and the position of the terminal box can be rotated by 4 x 90
degrees.
• Even if not required, on IEC B14 motors all four fixing screws, must be screwed into the flanged
bearing plate! The fixing screw threads must be inserted with a sealant, e.g. Loctite 242.
WARNING
Electric shock
The maximum depth for screwing into the type plate is 2 x d. There is a danger that the motor windings may be
damaged if longer screws are used. This creates a danger of potential transfer to the housing and danger of
electric shock if touched.
• The motor must be inspected for damage before installation and commissioning. A damaged motor
must not be commissioned.
• Rotating shaft ends and unused shaft ends must be protected against contact. Unused parallel shaft
keys must be secured against being thrown out.
• The motor must be suitable for the installation location. (requirements prescribed by standards,
ambient conditions, installation altitude)
• Motor surfaces may become very hot during operation. Suitable protective measures must be taken
if there is a danger of contact or a hazard to the vicinity of the installation.
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1.3.3 Balancing, drive elements
The fitting and removal of drive elements (clutch, pulley, gear wheel,…) must be performed with suitable
equipment. As standard the rotors are balanced with half key balancing. The appropriate form of
balancing must be observed if drive elements are installed on the motor shaft. Drive elements
must be balanced according to ISO 1940.
The generally required measures for protection against touching the drive elements must be observed.
If a motor is started without a drive element, the parallel key must be secured against being thrown out.
This also applies for any second shaft end. Alternatively, the parallel shaft key must be removed.
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