S&C Instruction Sheet 761-505
19
Installation
STEP 20.
If there is still slack, repeat the procedure in
Step 16 on page 17 but move the operating handle
more
than 20 degrees in the opening direction
before torquing the clamp bolt on the lowest rod
guide (or bell-crank) coupling. See Figure 22.
Conversely, if considerable force is needed to
move the handle to the fully
Closed
posi tion, or if
the handle does not swing 180 degrees to the fully
Open
position, loosen the clamp bolt on the low-
est rod guide (or bell-crank) coupling, and move
the handle to a position
less
than 20 degrees from
the
Closed
position. Then, torque the clamp bolt
on the lowest rod guide (or bell-crank) coupling.
Proper “resistance” in the operating linkage is
essential to ensure positive switch closure.
Recheck to be sure all clamp bolts and pierc-
ing set screws have been torqued to final tight-
ness.
If a key interlock is used (standard minor
modification suffix “-S6”) proceed to Step 21
on page 20. Otherwise, proceed to Step 23 on
page 21.
Figure 22 . Torquing clamp bolt at lowest rod guide
(or bell-crank) cou pling.
Clamp bolt
