Page 169 - Know and Understand Centrifugal Pumps

Know and Understand Centrifugal Pumps
I BASE

0 .OOO"
t

I

- 0.003"
I

QUANTIFY THE
DEFLECTION

Figure 10-14

w This same procedure can be used during the actual alignment
procedure to cancel bar deflection.
11. Perform a Preliminary Alignment

w Bring the equipment shafts into a reasonable state of alignment
with a machinist straight edge ruler and calibrated spacers before
using the dial indicators. When the shafts are far out of
alignment the dial indicators will make numerous revolutions
causing confusion. It is much better to perform a preliminary
alignment before applying the indicators.
w Double check the distance between shafts with the recommen-
dation of the coupling manufacturer.

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