Manual for Induction Motors and Generators
Installation and Alignment -
25
3BFP 000 050 R0101 REV E
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After the assembly of the foundation plates is done; the machine should be lifted up and
suspended above the floor. The machine feet, and the side and bottom surfaces of the
foundation plates as well as anchor bolts should be cleaned with white spirit
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Mount the assembled foundation studs or sole plates under the machine feet with the
mounting bolt (part 6) and washer (part 3). Center the mounting bolt (part 6) in the hole of
the machine by wrapping e.g. paper, cardboard or tape on the upper part of the bolt
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Place the 2 mm (0.8 inch) shim (part 7) between the foot and the plate (part 1). Fasten the
plate tightly against the foot with the mounting bolt (part 6)
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Place the leveling plate (part 8) under the leveling screw (part 5)
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Check that the space between the plate (part 1) and the anchor bolts (part 2) is tight. If
concrete penetrates through this interstice up to the nuts, the retightening cannot be done.
NOTE: The tape and the steel plate are not included in the delivery of the foundation studs.
3.4.4 Erection of machines
The machine is carefully lifted and placed onto the foundation. A rough horizontal alignment is
made with the aid of the previously installed steel wire and the marking of the axial location. A
vertical alignment is made with the leveling screws. Required positioning accuracy is within 2
mm (80 mil).
3.4.5 Alignment
The alignment is made as described in
3.4.6 Grouting
The grouting of the machine into the foundation is a very important part of the installation. The
instructions of the grouting compound supplier must be followed.
Please use high-quality non-shrinking grouting materials to avoid difficulties with the grouting
in the future. Cracks in the grouting compound or a poor attachment to the concrete foundation
cannot be accepted.
3.4.7 Final installation and inspection
After the concrete has set, lift the machine from the foundation and retighten the anchor bolts.
Lock the nuts by bridging or hitting sufficiently hard with a center punch. Lift the machine back
on the foundation and tighten the mounting bolts.
Check the alignment in order to ensure that the machine will run with the permissible vibration.
If necessary, make the adjustment with shims, and then complete the doweling according to the
holes in the feet at the machine D-end.
3.4.7.1 Dowelling of the machine feet
The machine has one dowel hole per foot at the D-end. Deepen the holes by drilling through to
the steel foundation. After that, the holes are tapered with a reaming tool. Suitable tapered pins
are fitted to the holes to ensure the exact alignment, and to allow easier reinstallation after any
possible removal of the machine.
