Fastening, Exact Alignment - VEM W41 Series Installation, Operating And Maintenance Instructions

Installation, Operating and Maintenance Instructions (Translation)

The block-outs are filled with cast concrete (2). Take care that the concrete is not higher than approx. 10
mm below the upper edge of the base plate (5). The tubes (14) must not be embedded in concrete so that
it is possible to change the T-head bolts (7) later.

Depending on the type of concrete the hardening of the cast concrete can take up to one week. During
hardening the motor should remain placed on the foundation.

When the cast concrete is completely hardened, the hexagonal nuts (8) of the T-head bolts (7) must be
tightened crosswise.

The hexagonal head screws (12) in the motor feet (10) must be loosened. If strips of cardboard were used,
they must be removed. Then the exact alignment can be done (see chapter 8).

8. Fastening, exact alignment

Caution!
A good alignment is prerequisite for a quiet, vibration-free operation of the motor. This is valid for rigid and
flexible coupling. If the alignment is not correct, coupling defects or bearing damage can occur.
The length of engagement of the hexagonal head screws in the foot bores must be at least as long as the diameter
of the screws.
The term „anchor bolt" is used in the following for anchor screws, stone bolts and T-head bolts.
Tightening torques
See chapter 11
Necessary measurement devices

Gauge with stand

Laser alignment device

Sensor gauge

Water level
Preliminary preparations
Before exact alignment the following preparations must be done:

The cast concrete must be hardened completely.

Check the tight fit of the anchor bolt in the base plate or the base frame. Tightening torques see chapter
7.6.

The openings of the anchor sleeves must be closed by using the supplied covers.

All transport devices must be removed. See chapter 7.2.
Work flow
The exact alignment of the motor is done by measurement between the coupling halves of the motor and the work
machine.
For alignment shims are placed under the motor feet. The thinnest shims must not be thicker than 0.3 mm. The
shims must be combined in a way that the height compensation is realised with the smallest possible amount of
shims. The shims must be fitting for the size of the feet. It must be possible that the whole foot rests on the shim.
Motors with grey-cast feet have 0.2 mm relief cuts in the contact surfaces. These relief cuts are used for realising
defined clamping. Therefore the rest of motor feet on the foundation must only be checked for all surfaces outside
of the relief cuts during assembly.
.
VEM motors GmbH-2013
1 Foot of the motor
2 Check of shims
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English