Material Travels Diagonally Across The Vibrating Screen
TROUBLESHOOTING 101 continued:
POSSIBLE CAUSE: DRIVE BELTS ARE TOO TIGHT
possible fix: Adjust drive belts
Comment: A vibrating screen to work properly, must be free floating on the springs to make a true circle. If belts too tight, a stroke check will show goofy circles.....and the unit will vibrate hard to the drive side.
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PC: MAIN BEARING FAILURE
PF: Replace bearing
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PC: DAMAGED SUSPENSION
PF: Replace broken coil springs or damaged part
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PC: SCREEN OUT OF LEVEL - SIDE TO SIDE
PF: Level the screen
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PC: MACHINE RACKING OR OFF MOTION
PF: Look for broken body member that is operating on its own frequency (separate from the rest of the body)
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PC: UNEVENLY BALANCED VIBRATOR WEIGHTS
PF: Match vibrator weights
Comments: sometimes they fall off....
kEEP your eyes peeled out there................George Baker ■
Troubleshooting 101 tips
SCREEN OUT OF BALANCE:
Possible Cause: Material build up on the screen
Possible Fix: Remove buildup to bring unit back into balance
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PC: Installation of a heavier screen media than originally supplied
PF: Must rebalance screen after checking with MFR
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PC: Chutes, hoppers added to vibrating body
PF: Remove chutework additions
The last one here actually happens a lot. People will add an extended lip on the discharge of the screener to make it drop into a crusher for example. THIS creates havoc, an unbalanced vibration to structures, and WILL crack the extended piece of normally.
George ■