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Installation & Adjustment Procedures
1.6.1. Always be sure to tighten the bottom hex nuts securely after jackscrew
adjustments are complete (
).
1.6.2. After making sure that the rotating insulator is perpendicular to the base, use the
jackscrews on the rigid hinge insulator to line up the mounting holes (do not force
the parts), and bolt the hinge assembly into position.
1.6.3. Once the hinge insulators are aligned, do not readjust them. Any contact
alignment adjustments will be made to the jackscrews that support the jaw
insulator.
1.6.4. Mount the jaw contact assembly to the insulator and, for the moment, leave the
bolts loose. Close the switch blade into the contacts, checking for alignment as
shown in
and
Usually bolt hole tolerances will be sufficient to
align the contacts properly. However, the jackscrews that support the jaw
insulator stack can also be used to tilt the insulator as required
1.6.5. Most importantly, however, final contact adjustment and inspection can be made
only after the conductors are attached to both ends of the switch pole. This is
because the weight of long conductors can deflect insulators sufficiently to cause
contact misalignment.
MAKE FINAL CONTACT ADJUSTMENT ONLY AFTER
CONDUCTOR ATTACHMENT.
Figure 3: Insulator Stack Alignment
1.6.1. Confirm that switch is oriented properly, per the unit assembly drawing.
1.6.2. Confirm that the match marks are aligned and all hardware is tight.
How to adjust Alignment:
•
Caution:
Do not turn stud!
•
Loosen all four “A” nuts.
•
Tilt insulator to necessary
angle using “B” nuts.
•
Adjust all four “B” nuts (up or
down) until proper alignment
is achieved.
•
Retighten nuts to proper
torque.