3-12 SECTION 3 – MAINTENANCE
6. Remove screws at the top of the measurement head. Carefully, remove the
encoder/spring assembly from the measurement head. The encoder/spring assembly
is sealed with an O-ring.
7. Remove the threaded retaining nut in the top of the measurement head housing.
8. Remove the threaded ring and push the glass bearing out of the retainer.
9. Reassemble the instrument.
Maintenance Schedule
The Flow-Thru Viscometer is designed for infrequent and easy maintenance. Generally,
maintenance is not required unless performance of the instrument indicates a problem such as
large errors, large hysteresis values, or large offsets. Below is a list of items that are likely to
require service over the life of the instrument. The frequency listed below is only intended as
an initial guide. Service frequency and usable life of each component is highly dependent on
the severity of testing and the frequency of use.
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