was the vibration data taken with the motor connected to the compressor? if so, at what loading/RLA?
Originally Posted by Taicool
the best open rotor test using vibration equipment is by measuring the dB of the current...see attached.
the main peak in the middle is the line frequency (60 Hz) and the large peak to the left is the rotor turning speed (57.469 Hz). the difference is about 32 dB. anything less than 45 dB indicates the beginning of a problem...<30 dB means that the motor is going to try to walk out of the door!
When she gets lonely and the longing gets too much
She sends a cable coming in from above
Don't need a phone at all
We got a thing that called radar love
We got a wave in the air...radar love....Golden Earring