1.
Set the parallel alignment indicator (P) to zero at the top-center position (12 o’clock) of the driv-
er coupling half (Y).
2.
Rotate the indicator to the bottom-center position (6 o’clock).
3.
Record the indicator reading.
When the
reading value
is...
Then...
Negative
The pump coupling half (X) is lower than the driver coupling half (Y). Remove
shims of a thickness equal to half of the indicator reading value under each driv-
er foot.
Positive
The pump coupling half (X) is higher than the driver coupling half (Y). Add
shims of a thickness equal to half of the indicator reading value to each driver
foot.
Y X
Shims
Figure 16: Side view of an incorrect vertical alignment
4.
Repeat the previous steps until the permitted reading value is achieved.
NOTICE:
The specified permitted reading values are valid only at operating temperature. For cold
settings, other values are permitted. The correct tolerances must be used. Failure to do so
can result in misalignment. Contact ITT for further information.
4.4.5.4 Perform parallel alignment for a horizontal correction
Refer to the alignment table in "Permitted indicator values for alignment checks" (see Table of Con-
tents for location of table) for the proper cold alignment value based on the motor temperature rise
and the pump operating temperature.
A unit is in parallel alignment when the parallel indicator (P) does not vary by more than 0.05 mm |
0.002 in. as measured at four points 90° apart at the operating temperature.
1.
Set the parallel alignment indicator (P) to zero on the left side of the driver coupling half (Y), 90°
from the top-center position (9 o’clock).
2.
Rotate the indicator through the top-center position to the right side, 180° from the start position
(3 o’clock).
3.
Record the indicator reading.
When the reading value
is...
Then...
Negative
The driver coupling half (Y) is to the left of the pump coupling half (X).
Positive
The driver coupling half (Y) is to the right of the pump coupling half (X).
4.
Slide the driver carefully in the appropriate direction.
NOTICE:
Make sure to slide the driver evenly. Failure to do so can negatively affect horizontal angu-
lar correction.
4.4 Pump-to-driver alignment
Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual
33
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