Permitted Indicator Values For Alignment Checks; Alignment Measurement Guidelines; Attach The Dial Indicators For Alignment - ITT GOULDS PUMPS ICO i-FRAME Installation, Operation And Maintenance Manual

4.4 Pump-to-driver alignment
Final alignment (hot alignment) checks
When
After the first run
Periodically

4.4.2 Permitted indicator values for alignment checks

4.4.2.1 Cold settings for parallel vertical alignment
Introduction
This section shows the recommended preliminary (cold) settings for electric motor-driven pumps based
on different temperatures of pumped fluid. Consult driver manufacturers for recommended cold settings
for other types of drivers such as steam turbines and engines.

4.4.3 Alignment measurement guidelines

Guideline
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.
Move or shim only the driver in order to make adjustments.
Make sure that the hold-down bolts for the driver are tight when
you take indicator measurements.
Make sure that the hold-down bolts for the driver are loose before
you make alignment corrections.
Check the alignment again after any mechanical adjustments.

4.4.4 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.
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Why
This ensures correct alignment when both the pump and the driver are at op-
erating temperature.
This follows the plant operating procedures.
Model ICO i-FRAME, ICOH i-FRAME Installation, Operation, and Maintenance Manual
Explanation
This prevents incorrect measurement.
This prevents strain on the piping installations.
This keeps the driver stationary since move-
ment causes incorrect measurement.
This makes it possible to move the driver when
you make alignment corrections.
This corrects any misalignments that an adjust-
ment may have caused.