Service
6-8 P/N M/97-520
13. Clean and inspect the sapphire jewel as follows:
a. Using contact cleaner or other non-residue cleaner and a
toothpick, gently clean the sapphire jewel. Use compressed
air to ensure all particles have been removed from the
sapphire jewel.
b. Using a magnifying glass, inspect the sapphire jewel to
make sure it is not cracked or chipped. If the sapphire jewel
is damaged, refer to Appendix A and contact Brookfield
Engineering Laboratories, Inc. for a replacement Microsyn
housing assembly.
NOTE: If your viscometer does not have an insulator located under the
Microsyn housing, then proceed with step 16.
14. Loosen and remove the three hex head cap screws that hold the
insulator to the endcap.
15. Carefully remove the insulator with damaging the torsion element
center wire.
16. Rotate the torsion element flange and gently pull until the endcap
and the torsion element have been separated.
NOTE: NEMA 4 type sensing endcaps have two teflon gaskets on either
side of the insulator. Replace the gaskets if they are damaged. NEMA 7 or
CENELEC type sensing endcaps do not have teflon gaskets.
17. Carefully clean all disassembled parts with an appropriate solvent.
18. Proceed with Sensing Endcap Assembly.
Microsyn Field Coil Replacement
WARNING
Make sure power has been turned OFF at the motor and torque sensor
electronics enclosures before servicing the viscometer.
1. Shut power OFF to the motor and torque sensor electronics
enclosures.
2. Using a wrench, loosen and remove the signal cable strain relief nut
from the sensing endcap as shown in Figure 6-2. Slide the nut, ring,
and insulator down the cable.
3. Remove the Microsyn housing cover screws as shown in
Figure 6-2.
4. Rotate and lift the Microsyn housing cover off the assembly and
slide it down the cable as shown in Figure 6-2.
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