Step 5. Trim Balance - Commtest Instruments vb Series Instrument Reference Manual

Step 5. Trim Balance

•
Replace safety covers, start the machine again and let the
rotor settle to its normal operating speed.
•
Press
After a few seconds the instrument displays the vibration level with
the imbalance corrected.
•
Press
The instrument will now display the details of additional weight
adjustments required to trim-balance the rotor (i.e. to further reduce
the level of vibration/imbalance). You can end balancing at this point
or continue with another reposition of trim balance weights, as
indicated, to improve on the balance level. The trim balance process
can be repeated until you are satisfied with the results. When you
have finished, press
•
You may wish to check that the residual imbalance meets
machine-balancing standards such as ISO 1940 and ISO
2372. The instrument includes an ISO 1940 calculator
should you wish to check the residual imbalance. To access
this, from the Balancing Menu press
Calculations.
•
To review measurement and weight adjustment details at
various stages of the balancing process, press
Readings from the Balancing Menu.
154 Section 10: Balancing Walk-through
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to perform a Trim Balance.
to return to the Balance Menu.
to return to the Balancing Menu.
Balance Weight
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