User's Manual

Table Of Contents
Option Description
F3 Decrease Scale Zoom out on the image.
F4 Toggle Direction Rotation Change the direction of the shaft rotation for the current
diagram.
F5 Intentionally blank.
F6 Accept Data Save the collected data to the job.
F7 Intentionally blank.
F8 Clear Data Clear the averaged magnitude and phase data. When the
data is cleared, the data average starts again.
F9 Intentionally blank.
F10 Display Ref. Run Data Display or hide the Reference Run information for the
selected point. When you enable the option, the vector
information displays below the Data Stability bar graph. This
option is only available during the Trial Run after acquiring
the Reference Run for the selected point.
F11 Intentionally blank.
F12 Accept Data Save the collected data to the job.
9.7.1 Equipment load, speed, and temperature during
measurement runs
Ensure the equipment runs under the same load, speed, and temperature for all
measurement runs. Let the equipment get to normal operating temperature before
collecting any data. As the equipment nears operating temperature, monitor the vibration
level. If the vibration increases with temperature, a thermal problem could cause the rotor
to bow.
9.7.2 Runout data
Runout is an optional measurement you can complete before the reference run. Use
displacement probes during a slow roll where the rotor rotates so slowly that the sensors
read only mechanical irregularities, such as a gash or bump on the rotor, not vibration.
When these irregularities pass the probe, they can be read as extra vibration. This is called
runout and you can subtract the irregularities to normalize the data and remove extra
vibration.
Runout requires only one set of readings because it is not affected by the number of
equipment speeds. The Balance program guides you through each step. The analyzer
highlights the first measurement point. When runout is subtracted, you can view any
reading with and without the runout information.
To enable the runout measurement, see Section 9.4.7. If you do not enable runout, the
option does not appear on the Acquire Data screens.
Balance
210
DRAFT