Service
6-12 P/N M/97-520
5. Carefully remove the stator.
6. Place the sensing endcap in a cylindrical device (vessel, can, etc.)
that will support the flange and allow the torsion element to be
suspended without contact.
7. Using a wrench, loosen and remove the signal cable strain relief.
Slide the nut, ring, and insulator down the cable.
8. Remove three screws from the Microsyn housing cover as shown in
Figure 6-2.
9. Rotate and lift the housing cover off the assembly and slide it down
the cable.
10. Remove the wires from the Microsyn field assembly.
11. Remove the two mounting screws, cable clamp, and washers from
the Microsyn field assembly.
CAUTION
Do not bend or damage the torsion element wire or sapphire jewel when
removing the Microsyn field coil.
12. Lift and remove the Microsyn field coil.
13. Using special wrench P/N TT100-1T, hold the assembly and loosen
the armature assembly nut with a 9/32 inch wrench and remove the
assembly from the center wire.
14. Remove the three Microsyn field coil mounting screws.
15. Carefully rotate the Microsyn field coil and lift it straight up and
remove it from the torsion element wire.
NOTE: When cleaning the sapphire jewel, use contact cleaner, or another
solvent that will not leave a residue on the sapphire jewel.
16. Using contact cleaner and toothpicks, clean the sapphire jewel
opening . Apply compressed air to the opening to ensure all
particles have been removed.
17. Inspect the sapphire jewel for cracks or chips. Refer to
Appendix A and call Brookfield Engineering Laboratories, Inc. if
jewel damage has been discovered.
18. Inspect the O-ring and replace it if it shows sign of wear or damage.
NOTE: NEMA 4 type sensing endcaps have two teflon gaskets on either
side of the insulator. NEMA 7 and CENELEC type sensing endcaps do not
have gaskets.
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