When the
reading val-
ue is...
Then...
Negative
The coupling halves are farther apart at the bottom than at the top. Perform one of
these steps:
•
Add shims in order to raise the feet of the driver at the shaft end.
•
Remove shims in order to lower the feet of the driver at the other end.
Positive
The coupling halves are closer at the bottom than at the top. Perform one of these
steps:
•
Remove shims in order to lower the feet of the driver at the shaft end.
•
Add shims in order to raise the feet of the driver at the other end.
4.3.5.2 Perform angular alignment for a horizontal correction
1.
Set the angular alignment indicator (A) to zero on 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 coupling halves are farther apart on the right side than
the left. Perform one of these steps:
•
Slide the shaft end of the driver to the left.
•
Slide the opposite end to the right.
Positive
The coupling halves are closer together on the right side
than the left. Perform one of these steps:
•
Slide the shaft end of the driver to the right.
•
Slide the opposite end to the left.
4.3.5.3 Perform parallel alignment for a vertical correction
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.
Repeat the previous steps until the permitted reading value is achieved.
4.3 Pump-to-driver alignment
28
Model 3355 Installation, Operation, and Maintenance Manual
Содержание Goulds Pump 3355
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