Goulds Pumps 3196 i-FRAME - IOM - Manual (Page 31)

Installation
Permitted indicator values for alignment checks
NOTICE:The specified permitted reading values are valid only at operating temperature. For
cold settings, other values are permitted. You must use the correct tolerances. Failure to do so
can result in misalignment and reduced pump reliability.
When dial indicators are used to check the final alignment, the pump and drive unit are
correctly aligned when these conditions are true:
• The total indicator runout is a maximum of 0.002 in. (0.05 mm) at operating temperature.
• The tolerance of the indicator is 0.0005 in./in. (0.0127 mm/mm) of indicator separation at
operating temperature.
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.
Recommended settings for models 3196, CV 3196, and LF 3196
Pumpage temperature Recommended setting
50°F (10°C) 0.002 in. (0.05 mm), low
150°F (65°C) 0.001 in. (0.03 mm), high
250°F (120°C) 0.005 in. (0.12 mm), high
350°F (175°C) 0.009 in. (0.23 mm), high
450°F (218°C) 0.013 in. (0.33 mm), high
550°F (228°C) 0.017 in. (0.43 mm), high
650°F (343°C) 0.021 in. (0.53 mm), high
700°F (371°C) 0.023 in. (0.58 mm), high
Alignment measurement guidelines
Guideline Explanation
Rotate the pump coupling half and the driver This prevents incorrect measurement.
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
This prevents strain on the piping installations.
adjustments.
Make sure that the hold-down bolts for the
This keeps the driver stationary since move-
driver feet are tight when you take indicator ment causes incorrect measurement.
measurements.
Make sure that the hold-down bolts for the
This makes it possible to move the driver when
driver feet are loose before you make align- you make alignment corrections.
ment corrections.
Check the alignment again after any mechani- This corrects any misalignments that an ad-
cal adjustments.
justment may have caused.
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.
Model 3196 i-FRAME Installation, Operation, and Maintenance Manual 29