Goulds Pumps 3298 - IOM - Manual (Page 31)

Installation
Table 6: Cold settings for parallel vertical alignment
If the operating temperature of the pumped Then, set the driver shaft parallel vertical
liquid is... alignment...
50°F (10°C) 0.002 in. (0.05 mm) lower
150°F (65°C) 0.001 in. (0.03 mm) higher
250°F (120°C) 0.005 in. (0.12 mm) higher
Perform parallel alignment for a horizontal correction
A unit is in parallel alignment when the parallel indicator (P) does not vary by more than
0.002 in. (0.05 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 12: Top view of an incorrect horizontal alignment
5. Repeat the previous steps until the permitted reading value is achieved.
Maximum permitted value for parallel alignment:
• 0.002 in. (0.05 mm) total indicated runout at operating temperature
Perform complete alignment for a vertical correction
A unit is in complete alignment when both the angular indicator (A) and the parallel indicator (P)
do not vary by more than 0.002 in. (0.05 mm) as measured at four points 90° apart.
1. Set the angular and parallel dial indicators to zero at the top-center position (12 o’clock) of
the driver coupling half (Y).
2. Rotate the indicators to the bottom-center position (6 o’clock).
3. Record the indicator readings.
4. Make corrections according to the separate instructions for angular and parallel alignment
until you obtain the permitted reading values.
Maximum permitted value for angular alignment:
• 0.002 in. (0.05 mm) total indicated runout at operating temperature
Maximum permitted value for parallel alignment:
• 0.002 in. (0.05 mm) total indicated runout at operating temperature
When the procedure is complete, both the angular and parallel alignment must meet the
permitted tolerances.
3298 Family Installation, Operation, and Maintenance Manual 29