S&C CS-1A User Manual

20 S&C Instruction Sheet 719-500
Adjusting the Switch Operator
both the Open and Closed positions) to indicate
the circuit-switcher has been driven to a positive-
toggle position against its open (or closed) stops.
(a) Place the selector handle in the Coupled
position. Operate electrically to open the
circuit-switcher and determine the amount
of overtravel in the opening direction by
releasing the motor brake and noting how
far the output shaft “unwinds.”
NOTICE
Before checking the “unwind” after a closing
stroke, remove the motor-circuit fuseholder
before releasing the motor brake� Excessive
“unwind” at this point could cause travel-limit
switch rotation sufficient to pick up a “bb”
contact that, in turn, would cause the switch
operator to open (if energized)�
(b) Release the motor brake by unlatching
the manual operating handle and pivoting
it rapidly, with a snap motion, toward its
Cranking position. Then, return the manual
operating handle to its Storage position.
(c) If adjustment is needed, remove the motor-
circuit fuseholder. To increase the amount
of “unwind,” move the opening stroke travel-
limit disc (to increase travel) one indicator
plate number at a time. See Figure 11 on
page 21.
Note: The direction of disc rotation is always
the same as that of the output shaft. The output
shaft should never have sufcient “unwind” when
the switch operator is decoupled to cause travel
limit disc rotation. If travel-limit disc rotation is
evident, advance the opening-stroke travel-limit
disc (to decrease travel) an amount necessary
only to eliminate the “unwind” rotation of the
travel-limit discs.
STEP 5� With the manual operating handle in its Storage
position, reinsert the motor-circuit fuseholder,
and operate the switch operator electrically to
close the circuit-switcher. Repeat the procedure,
as described in Step 4 and in Figure 11, and adjust
the closing-stroke travel-limit disc one indica-
tor plate number at a time to obtain the correct
amount of overtravel in the closing direction.
STEP 6� Operate the circuit-switcher several times electri-
cally with the switch operator and observe the
action. Operation should appear smooth, with
the circuit-switcher drive-shaft cranks coming to
rest rmly against their stops, in an Overtoggle
position, in both opening and closing directions.

S&C CS-1A Specifications

General

Brand	S&C
Model	CS-1A
Category	Switch
Language	English