TroubleshootingModel 2500 191
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7.8 Mechanical
This section gives an overview of possible mechanical problems encountered while operating the
Model 2500 Dissolution System. To ensure consistent performance, follow the recommended
possible solutions given for a specific problem.
By using a bubble level or digital level, level the instrument from
front to back and side to side by adjusting the front leveling feet
located under the base of the instrument. Refer to bath leveling.
Adjust the stabilizer feet so they just barely touch the bench.
Remove the shaft from the instrument to check the runout with a
runout gauge (a shaft v-block from Distek is available to perform
the shaft runout away from the instrument).
Check for worn out o-ring and plastic bushing inside the spindle
sleeve. Replace if necessary.
Inspect the the two ball bearings inside the spindle for wear. If a
clicking noise is heard while the spindles are spinning, replace
the spindle assembly.
Remove the shaft from the instrument to check the runout with a
runout gauge (a shaft v-block from Distek is available to perform
the shaft runout away from the instrument).
Check for worn out o-ring and plastic bushing inside the spindle
sleeve. Replace if necessary.
Inspect the the two ball bearings inside the spindle for wear. If a
clicking noise or grinding is heard while the spindles are
spinning, replace the spindle assembly.
Check the vessel inside diameter for smoothness. Any bumps on
the inside diameter of the vessel will throw off the centering.
Faulty vessel. Replace the vessel with recommended Distek brand
vessels which have tighter specifications.
Check for any worn out vessel acculign rings. Replace if
necessary.
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Check that the height block turns smoothly and locks securely.
Make sure that locking collars do not lift the shafts when locking
them in place. Refer to Operation: Height Adjustment.
Check the vessel's inside curvature for smoothness. Any bumps
on the inside curvature of the vessel will throw off the height.
Faulty vessel. Replace the vessel with recommended Distek brand
vessels which have tighter specifications.
Check the drive motor cable wiring for integrity and connection.
Check the motor pulley integrity and be certain that it is securely
fastened.
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