Brookfield DV2+Pro Viscometer Instrukcja Użytkownika Strona 94

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Brookeld Engineering Labs., Inc. Page 94 Manual No. M03-165-F0612
Appendix K -Fault Diagnosis and Troubleshooting
Listed are some of the more common problems that you may encounter while using your Viscometer.
Spindle Does Not Rotate
Make sure the viscometer is plugged in.
Check the voltage rating on your viscometer (115, 220V); it must match the wall voltage.
Make sure the motor is ON and the desired rpm is selected.
Zero RPM is the Only Available Speed
Check speed set selection (section IV.2.3). If custom speed is selected, make sure that additional
speeds, other than zero, have an Asterisk (*).
Spindle Wobbles When Rotating or Looks Bent
Make sure the spindle is tightened securely to the viscometer coupling.
Check the straightness of all other spindles; replace if bent.
Inspect viscometer coupling and spindle coupling mating areas and threads for dirt; clean threads
on spindle coupling with a 3/56 left-hand tap.
Inspect threads for wear; if the threads are worn, the unit needs service (see Appendix M). Check
to see if spindles rotate eccentrically or wobble. There is an allowable runout of 1/32-inch in
each direction (1/16-inch total) when measured from the bottom of the spindle rotating in air.
Check to see if the viscometer coupling appears bent; if so, the unit is in need of service (see
Appendix N, “Warranty Repair and Service”).
Inaccurate Readings
Verify spindle, speed and model selection.
Verify spindle selection is correct on DV-II+Pro.
If%readingsareunder-range(lessthan10%),thedisplaywillash;changespindle and/or
speed.
EEEE” on the digital display means the unit is over-range (greater than 100%); reduce speed
and/or change spindle.
Verifytestparameters:temperature,container,volume,method.Referto:
• “MoreSolutionstoStickyProblems”,SectionIII
• “DV-II+ProViscometerOperatingInstructions,AppendixC,“Variablesin
Viscosity Measurements.
Perform a calibration check; follow the instructions in Appendix E.
Verify tolerances are calculated correctly.
Verify the calibration check procedures were followed exactly.
If the unit is found to be out of tolerance, the unit may be in need of service. See Appendix N
for details on “Warranty Repair and Service”.
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