Figure 8: Horizontal correction of the motor
4.1.3.12 Perform parallel alignment for a vertical correction
Refer to the alignment table in "Permitted indicator values for alignment checks" (see Table of Contents
for location of table) for the proper cold alignment value based on the motor temperature rise and the
pump operating temperature.
Before you start this procedure, make sure that the dial indicators are correctly set up.
A unit is in parallel alignment when the parallel indicator (P) does not vary by more than as measured at
four points 90° apart at the operating temperature.
1.
Set the parallel alignment indicator (P) to zero at the top-center position (12 o’clock) of the driver
coupling half (Y).
2.
Rotate the indicator to the bottom-center position (6 o’clock).
3.
Record the indicator reading.
When the read-
ing 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 driver
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.
4.1 Pre-installation
Model Trash Hog II Installation, Operation, and Maintenance Manual
21
