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Recommended settings for model XHD
Pumped fluid temperature Recommended setting for driver shaft
10°C | 50°F
0.05 mm | 0.002 in., low
65°C | 150°F
0.03 mm | 0.001 in., high
120°C | 250°F
0.12 mm | 0.005 in., high
4.5.3 Alignment measurement guidelines
Guideline
Explanation
Rotate the pump coupling half and the driver coupling half together
so that the indicator rods have contact with the same points on the
driver coupling half.
This prevents incorrect measurement.
Move or shim only the driver in order to make adjustments.
This prevents strain on the piping installations.
Make sure that the hold-down bolts for the driver are tight when
you take indicator measurements.
This keeps the driver stationary since move-
ment causes incorrect measurement.
Make sure that the hold-down bolts for the driver are loose before
you make alignment corrections.
This makes it possible to move the driver when
you make alignment corrections.
Check the alignment again after any mechanical adjustments.
This corrects any misalignments that an adjust-
ment may have caused.
4.5.4 Attach the dial indicators for alignment
You must have two dial indicators in order to complete this procedure.
1.
Attach two dial indicators on the pump coupling half (X):
a) Attach one indicator (P) so that the indicator rod comes into contact with the perimeter of the
driver coupling half (Y).
This indicator is used to measure parallel misalignment.
b) Attach the other indicator (A) so that the indicator rod comes into contact with the inner end of
the driver coupling half.
This indicator is used to measure angular misalignment.
Figure 20: Dial indicator attachment
2.
Rotate the pump coupling half (X) in order to check that the indicators are in contact with the driver
coupling half (Y) but do not bottom out.
3.
Adjust the indicators if necessary.
4.5.5 Pump-to-driver alignment instructions
4.5.5.1 Perform angular alignment for a vertical correction
Before you start this procedure, make sure that the dial indicators are set up correctly.
1.
Set the angular alignment indicator to zero at the top-center position (12 o’clock) of the driver cou-
pling half (Y).
A unit is in angular alignment when the angular indicator (A) does not vary by more than 0.10 mm |
0.004 in as measured at 4 points 90º apart at the operating temperature.
2.
Rotate the indicator to the bottom-center position (6 o’clock).
3.
Record the indicator reading.
4.5 Pump-to-driver alignment
34
XHD Installation, Operation, and Maintenance Manual
Summary of Contents for XHD
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