Table of Contents
Advertisement
● 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.
5.3.1
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.
5.3.2
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.
● Smooth running
Preconditions for smooth, vibration-free operation:
– Stable foundation design free of any shock or vibration.
– A precisely aligned coupling.
– A well-balanced drive output element (coupling, belt pulleys, fans, ...)
Maintain the maximum permissible vibration in operation according to ISO 10816.
Avoid inadmissible vibration caused by imbalance, for example (drive output element),
external vibration or any resonance over the complete speed range.
It may be necessary to completely balance the machine with the drive output element or
the system resonance frequency must be shifted.
1MB155 / 1MB555
Operating Instructions, 03/2018, A5E41926185A
Assembly
5.3 Alignment and fastening
57
Advertisement
Table of Contents
