Adjustments - S&C AS-1A Instructions For Installation Manual

S&C Switch Operators - Type AS-1A
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MANUAL OPERATION - Continued
Step 7
To couple: Manually operate the switch operator to bring
it to the same position ( open or closed) as the Alduti-
Rupter Switch. The switch operator position indicator,
seen through the observation window, will show when the
approximate open or closed position has been attained.
See Figure 5. (The position indicator for the Alduti-Rupter
Switch, located on the output-shaft collar of the switch
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ADJUSTMENTS
A
CAUTION
Remove the two-pole pull-out fuseholders for the motor
circuit and space-heater circuit. See Figure 2.
Failure to remove fuseholders can result in acci-
dental energizing of the operator afte r the external
connections have been completed.
Reinsert fuseholders only when directed to do so in
the steps that follow.
Make certain that the main contacts on all three switch
poles are fully closed and, where applicable, the switch
toggle mechanisms are in an overtoggle position against
their respective closed stops. Refer to the instruction
sheet furnished with the Alduti-Rupter Switch.
With the selector handle in the coupled position, manu-
ally crank the switch operator to the fully closed position,
as indicated by the switch operator position indicator. See
Figure 5.
At the switch operator output shaft, replace the detach-
able portion of the coupling clamp. Make certain that the
cutting tips of the piercing set screws do not protrude
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operator, will be aligned later.) To move the switch opera-
tor to the exact position for coupling, turn the manual
operating handle slowly until the position-indexing drums
are numerically aligned. Then swing the selector handle
upright and rotate it counterclockwise to the coupled
position. Lower the handle to engage the locking tab. The
selector handle is now in the coupled position.
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through the body of the coupling. Torque the flexible cou-
pling clamp bolts equally to final tightness so that the
clamp pulls down evenly on the vertical-operating-pipe
section. Then tighten the associated piercing set screws,
piercing the pipe, and continue turning until a firm resis-
tance is felt. See Figure 3.
Step 9
With the selector handle
in
the coupled position, crank
the Alduti-Rupter Switch to the fully open position, then
to the fully closed position, and in each position accu-
rately align the switch position indicators on the output-
shaft collar of the switch operator with the alignment
arrow below. See Figure 1. Each Alduti-Rupter Switch
position indicator can be shifted after loosening the hex-
head screws which fasten it to the output-shaft collar.
Tighten these screws after making the above alignments.
For Type AS-lA Switch Operators furnished
with Source-Transfer Control Compatibility
(suffix "-Ul"), omit Steps 10 through 17 and,
instead, follow the step-by-step procedure out-
lined in the Appendix.
Position-indicating lamps
(Catalog Number Suffix "-M")
Internal decoupling
mechanism (in decoupled
position)
Arrow
plate
Position-indexing drums
Figure
s.
Views of switch operator through observation window.
769-500
INSTRUCTION SHEET
Page 10 of 23
April 22, 1996
Internal decoupling
mechanism
(in coupled position)
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