Section 10: Balancing Walk-through
151
• Press to enter the angular position of the trial weight
with respect to the reference mark. (If using circumference
arc or fixed positions for your weight position reference
system, enter the trial weight point or trial arc.) Use the
number keys to enter a value then press
to continue.
• Replace safety covers, start the machine again, and let the
rotor settle to its normal operating speed.
• Press
to take a reading of the imbalance with the trial
weight added.
After a few seconds, the instrument displays the speed of the rotor in
RPM and Hz, the vibration level with the trial weight added (i.e.
amplitude at 1X the rotor speed), and the phase angle of the
vibration.
• Wait for the readings to stabilize and then press to
accept the recording. Note that our recording now has an
amplitude of 5.1 mm/s. The trial weight has actually
increased the imbalance.
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