Chapter 5: Troubleshooting
Operation Manual: Evolution Series
Mechanical
PROBLEM POSSIBLE SOLUTION
SHAFT
WOBBLE/RUNOUT
RTD shafts RTD shafts
With the unit at its operating
position (paddles or baskets) use a
run out gauge to validate the
shaft wobble.
Mount the gauge base with a
clamp on the vessel support plate
(next to the shaft to be checked).
Move the tip of the gauge until it
contacts the shaft tolerably.
Raise the drive head until the tip
of the gauge is just less than 1
inch above the apparatus.
Rotate a spindle that is not under
test manually until you reach the
high-end deflection of the gauge’s
readout.
Gradually push the shaft with your
thumb near the meter shaft, away
from the gauges adjustable tip.
Start stirring at 25 rpm and check
the shaft wobble.
Do this until you meet the
specifications.
Spacers and
Inserts
Check the spacers and inserts for
defects.
Replace if necessary.
Attach CenterChek as per
instruction on the position in
question.
Rotate a spindle that is not under
test manually.
Note the whole deflection of the
CenterChek.
Rotate the gauge until you reach
the high-end deflection of the
gauge’s pointer (counter
clockwise movement) then stop
the rotation.
SHAFT CENTERING Spindles
Adjustments
Open the drive assembly cover.
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