5.4 Aligning and xing the machine
Observe the following when aligning and mounting:
• Ensure a at and uniform contact surface for foot and ange mounting.
• When mounting on the wall, support the machine from below, e.g. using a bracket, or bolt
it.
• Precisely align the machine when couplings are used.
• Ensure that the mounting surfaces are clean and free of any dirt.
• Remove any anti-corrosion protection using white spirit.
• Avoid installation-related resonances with the rotating frequency and twice the line
frequency.
• Note any unusual noise when the rotor is manually turned.
• Check the direction of rotation with the motor uncoupled.
• Avoid rigid couplings.
• Repair any damage to the paint, this must be done immediately and correctly.
5.4.1 Measures for alignment and mounting
The following measures are required in order to compensate any radial oset at the coupling and
to horizontally adjust the electrical machine with respect to the driven load:
• Vertical positioning
For vertical mounting positions, avoid deforming the machines by placing shims under the
mounting feet. Keep the number of shims low; only use a few stacked shims.
• Horizontal positioning
To position the machine horizontally, shift it sideways on the foundation and ensure that the
axial position is maintained (angularity error).
• When positioning the motor, ensure that a uniform axial gap is maintained around the
coupling.
Assembly
5.4Aligning and xing the machine
1LE1, 1FP1/3, 1PC1/3 shaft height 63 ... 315
Operating Instructions, 11/2023, A5E38483075A 55
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