Goulds Pumps XHD - IOM - Manual (Page 34)

Installation
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 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 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.
NOTICE:
Figure 10: Side view of an incorrect vertical alignment
4. Repeat the previous steps until the permitted reading value is achieved.
Perform parallel alignment for a horizontal correction
A unit is in parallel alignment when the parallel indicator (P) does not vary by more than
0.004 in. (0.10 mm) 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 angular correction.
Figure 11: Top view of an incorrect horizontal alignment
5. Repeat the previous steps until the permitted reading value is achieved.
32 XHD Installation, Operation, and Maintenance Manual