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Table 7-3
Symptom
Instrument will not calibrate
Rotor does not rotate
Rotor does not freely rotate in cell
101625591
General (continued)
Possible Cause
Damaged spring module
Mechanical zero misadjusted
Shipping screws not removed
Faulty motor drive circuit
Rotor bushing misaligned
Rotor touches inside of cell
This is a live document. The blank spaces in the tables above are
provided as a convenient area for the user to document problems
and solutions as they arise and are solved.
iX77™ Rheometer User Manual
Revision F
Solution
Call for FANN service
Set mechanical zero, see 5.5.1
Setting the Mechanical Zero, page
93
Remove the three shipping screws,
see 4.1.2 Procedure, page 35
Call for FANN service
Loosen drive magnet set screw,
reposition the bushing, tighten the
set screw
Bent pivot/thermowell; straighten in-
place with tube slipped over it as a
lever
117
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