Brookfield TT100 - Page 104

Troubleshooting
7-4 P/N M/97-520
Reverse Torque
Response
1. Coarse zero calibration
incorrect.
2. Reverse motor rotation.
3. Transducer wired incorrectly.
1. Refer to Coarse Zero
Adjustment in Section 3.
2. Refer to Table 7-2 in
Section 7.
3. Refer to Figure 6-3 in
Section 6.
Partial torque
Response
1. Coarse zero calibration incorrect.
2. Excessive load (above 600 ohms)
on output.
3. Solids build-up within
viscometer.
4. Incorrect/shorted Microsyn field
coil wiring.
5. Excessive friction on readout
wire at jewel.
6. Damaged torsion element.
7. Span calibration incorrect.
8. Loose or misaligned armature
assembly.
9. Optional elliptical baffle
installed incorrectly.
1. Refer to Coarse Zero
Adjustment in Section 3.
2. Reduce load.
3. Refer to Section 5 and clean
the viscometer.
4. Refer to Sensing Endcap
Service in Section 6.
5. Refer to Sensing Endcap
Service in Section 6.
6. Refer to Sensing Endcap
Service in Section 6.
7. Refer to Single or Dual
Range Span Calibration
in Section 3.
8. Refer to Sensing Endcap
Service in Section 6.
9. Refer to the Elliptical
Baffle Precautions
in Section 5.
Table 7-3: Calibration Errors (Continued)
Problem Possible Cause Corrective Action