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5.4
Alignment and fastening
Observe the following when aligning and mounting:
● Ensure a flat and uniform contact surface for foot and flange 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
Repainting/touching up the paint finish of explosion-protected machines
Note
Repainting/touching up the paint finish of explosion-protected machines
For explosion-protected machines, observe the information in Chapter Repainting/touching
up (Page 119).
5.4.2
Measures for alignment and mounting
The following measures are required in order to compensate any radial offset 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.
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 06/2020, A5E44455710A
Assembly
5.4 Alignment and fastening
61
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