PRÜFTECHNIK ROTALIGN Ultra iS - Align Machine; Alignment Quality; Shim First; Sign Convention

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4.13.2 Sign convention
The following sign convention is used in the evaluation of alignment results.
With left machine stationary, gap is positive when open at top or side away from
viewer. The viewer is considered to be standing in front of the machines as they
appear on the display.
Both vertical and horizontal results show the foot position relative to the stationary
machine centerline. Positive values indicate that machine is upwards or away from
viewer. Negative values indicate that machine is downwards or towards the viewer.
4.13.3 Alignment quality
The ‘smiley’ symbol by the coupling results indicates the degree to which the measured
alignment condition meets tolerances. The smiley face appears only when tolerances
have been enabled (see section 4.9).
If all results lie within tolerance, no alignment corrections are necessary.
4.14 Align machine
To align your machine you need to move it vertically by shimming the feet, and
horizontally by shifting it sideways. You can perform these operations in either order
or simultaneously.
4.14.1 Shim first
It is recommended to perform vertical corrections first, since the horizontal
condition is easily affected by the process of loosening anchor bolts and inserting/
removing shims, whereas the vertical condition is less prone to being affected
when performing horizontal moves. You may need to recheck soft foot before
proceeding.
Excellent
Acceptable
Out of tolerance
Note
I
f
all results lie within to
l
erance, no a
l
ignment corrections are necessary.
Note
It is recommended to perform vertical corrections first, since the horizontal
condition is easily a
ff
ected by the process o
f
loosening anchor bolts and inserting
/
removin
g
shims, whereas the vertical condition is less prone to bein
g
affected
when per
f
orming horizontal moves. You may need to recheck so
f
t
f
oot be
f
ore
procee
d
in
g
.
Horizontal shaft alignment