Brookfield Engineering Labs., Inc.
Page 122
Manual No. M13-167-A0415
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Pivot point or jewel bearing faulty
• Perform an Oscillation Check*
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Remove the spindle and turn the motor OFF; select display to % torque mode.
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Gently push up on the rheometer coupling.
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Turn the coupling until the digital display reads 10-15 on the % display.
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Gently let go of the coupling.
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Watch the digital display; you should see a “run” of numbers next to the %; the “run” of
numbers should ultimately stop at 0.0 (+/- 0.1).
If the digital display does not return to ZERO, the unit most likely is in need of service.
• Perform calibration check (see Appendix F).
• Contact Brookfield Engineering Laboratories, Inc. or your Brookfield dealer for repair (see
Appendix O).
* This procedure does not apply to instruments with ball bearing suspension (see Section I.3).
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Display Reading Will Not Stabilize
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Special characteristic of sample fluid. There is no problem with the rheometer.
• Refer to Appendix C.
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Check for erratic spindle rotation.
• Verify power supply
• Contact Brookfield Engineering Laboratories, Inc. or your Brookfield dealer for repair.
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Bent spindle or spindle coupling.
• Contact Brookfield Engineering Laboratories, Inc. or your Brookfield dealer for repair.
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Temperature fluctuation in sample fluid.
• Use temperature bath for control.
