S&C Mark VI Instructions For Installation Manual page 41

c. If rotation of the travel-limit disc 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.
Ç
CAUTION
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 rotation of
the travel-limit switch suffi cient to pick up a
"bb" contact, which, in turn, would cause the
switch operator to open (if energized).
d. 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
disconnect.
e. Repeat the procedure, as described above
and in Figure 57, and adjust the closing-
stroke travel-limit disc one indicator-plate
number at a time to obtain the correct
amount of overtravel in the closing direc-
tion.
WIRING AND ADJUSTING THE SWITCH OPERATOR
Use when direction of output shaft and travel-limit disc rotation
is clockwise to open.
Use when direction of output shaft and travel-limit disc rotation is
counterclockwise to open.
Figure 57. Adjustment of travel-limit discs for desired "unwind" of output
shaft.
41
Opening-stroke travel-limit
disc (with Circuit-Switcher and
switch operator in fully open
position—raise and turn coun-
terclockwise to increase travel of
switch operator)
Closing-stroke travel-limit
disc (with Circuit-Switcher and
switch operator in fully open
position—lower and turn clock-
wise to increase travel of switch
operator)
Opening-stroke travel-limit
disc (with Circuit-Switcher and
switch operator in fully open
position—raise and turn clock-
wise to increase travel of switch
operator)
Closing-stroke travel-limit disc
(with Circuit-Switcher and switch
operator in fully closed posi-
tion—lower and turn counter-
clockwise to increase travel of
switch operator)
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