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Appendix
Maximum Allowable For:
•
3/4” stud:
1 3/16”
•
1” stud:
1"
Maximum Allowable For:
•
3/4” stud:
1 3/16”
•
1” stud:
1"
Appendix B: General Installation Notes
When a switch uses an auxiliary switch arm, installation will be easier if this pole is adjusted before
installing the interphase pipe. This will eliminate trying to coordinate and adjust all three poles at
once.
1. If the components have self-piercing set screws, during installation tighten them to only grip
the pipe (match mark to check for slip-page) and drive them In only after adjustments are
completed.
2. If a motor operator Is used, at this point refer to its installation in-structions tor mounting,
checkout procedure and trial operations.
Threaded Clevises
When threaded clevises are specified, one is generally attached to the adjustable arm, and two
more to the center phase switch arm. (Refer to the plan view of the operating mechanism drawing,
and the Illustration above.)
Operating mechanism adjustments consist mainly of incremental lengthening and/or shortenings of
the pipes that connect the switch arms together. To make these adjustments, simply loosen both
jam nuts "A" and screw the stud in or out as required. Be sure to retighten both jam nuts securely.
Figure 11: Threaded Clevices
Initial Dimension For:
•
3/4” stud:
11/16”
•
1” stud:
1/2"
DO NOT SCREW THE STUD OUT OF THE CLEVISES.
This could cause the pipe to fall, resulting In serious injury to personnel below. Be
sure the Initial setting is correct, and do not adjust beyond the maximum allowable
dimension. If adjustment beyond the maximum allowable dimension Is needed,
loosen the U-bolts on the outboard phase clevis and reposition the pipe toward the
center phase.
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