S&C Instruction Sheet 719-500 17
Adjusting the Switch Operator
(b) If the cranking direction required to close
the circuit-switcher is opposite to that
indicated by the arrow plate, remove the
arrow-plate mounting screws and remount
the arrow plate, exposing its opposite side.
(c) With the manual operating handle in its
Storage
position and the selector handle
in the
Decoupled
position, reinsert the
motor-circuit fuseholder. Open the pushbut-
ton protective cover
●
and operate the switch
operator by means of the externally mounted
OPEN/CLOSE pushbuttons, if provided, or
in their absence, by momentarily jumper-
ing terminals 1 and 8 to open, and 1 and 9
to close.
■
Note the direction in which the travel-limit
discs rotate when the switch operator closes.
The direction should agree with the temporary
direction mark previously made on the top of
the enclosure and with the direction displayed
in the cutaway section on the outer ring of the
travel-limit discs. See Figure 10 on page 18.
(The rotation direction of the travel-limit discs
is always the same as the output shaft rotation
direction.
(d) If the direction of the travel-limit disc
rotation noted in Step 4(c) is opposite to
the temporary direction mark previously
made in Step 4(a), a reversal of the motor
direction will be necessary. Remove the
motor-circuit fuseholder to avoid acciden-
tal or remote energization of the control
circuit. Interchange the “S1” and “S2” motor
leads connected to terminals 4 and 5 on
the terminal block in the switch operator
enclosure.
Note:
Reversing the motor direction reverses
only the rotation direction of the output shaft
and travel-limit discs. The identity of the opening-
stroke and closing stroke travel-limit discs (to be
adjusted later) will remain unaffected.
(e) In the event that the rotation direction of
the travel-limit discs noted in Step 4(c) is
opposite to the direction displayed in the
cutaway section on the outer ring of the
closing-stroke travel-limit disc, remove the
positioning screws on the outer ring of the
closing-stroke travel-limit disc. See Figure 10
on page 18. Rotate the outer ring until the
desired direction is displayed in the cutaway
section. Replace the positioning screws.
(f) Reinsert the motor-circuit fuseholder and
operate the switch operator to the
Open
position.
(g) If the output-shaft rotation direction to
open the circuit-switcher is opposite to that
displayed in the cutaway section on the outer
ring of the opening-stroke travel-limit disc,
change the direction displayed as indicated
in Step 4(e).
●
For switch operators with optional remote-control blocking switch
(suffix “-Y”), opening the pushbutton protective cover prevents remote
operation of the switch operator�
■
Terminal designations may differ in special wiring diagrams� In
such cases, refer to the specific wiring diagram for the correct terminal
designations�
