Patent No. 6,766,028 - OFI Testing Equipment, Inc.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 46
Maintenance
Torsion Spring
Replacement
1. Follow steps 1 - 6 on page 40.
2. Loosen the three screws on the transducer clamp.
3. The torsion spring can now be removed from the top of the bob shaft.
4. Carefully place the new spring into the top of the bob shaft.
5. Tighten the three screws on the transducer clamp to secure the torsion
spring inside the top of the bob shaft.
6. Reassemble the viscometer. Refer to steps 21 - 26 on page 43.
7. Adjust the P value (see page 49 for instructions).
8. Run the TransCal procedure (Steps 10 - 14 on page 52).
9. Recalibrate the viscometer (See page 19).
Torsion Spring
Transducer
Transducer Clamp
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