S&C Instruction Sheet 1045M-510
31
Installing the Reciprocating Switch Operator
Figure 18. The bottom view of switch operator showing the ground lug, dimensions are
inches (mm).
4 X DRAIN
COMMUNICATIONS
CONNECTOR
(WHEN ORDERED)
SENSOR
CONNECTIONS
(WHEN ORDERED)
2 3/4
(70)
6 (152)
1 3/8 (35)
ENTRY FOR INCOMING
POWER CONNECTIONS
GROUND LUG
#14 - #2 AWG
2 1/8 (54)
14 1/2
(368)
TEMPERATURE
SENSOR
Ø
STEP 8.
Attach the output crank yoke to the operating rod and the output crank.
(a) Remove the decoupling pin so the output crank can rotate freely. Note that when
the decoupling pin is installed, it must be secured by a
⅜
-inch bolt or a padlock
with a
⅜
-inch hasp (see Figure 19). Bolt the bottom end of the output crank yoke
to the hole in the output crank suitable for the switch being converted. The
distance from the switch operator output drive shaft to the output crank yoke
should be about the same as the length of the switch operating lever at the top of
the operating rod. The yoke should pivot freely on the output crank.
NOTICE
When the output crank yoke is attached to the hole closest to the end of the output
crank, the connecting link must face away from the end of the crank (see Figure 20
on page 32). The opposite is true if the output crank yoke is attached to any other
hole on the output crank. This helps to keep the control rod centered and prevents
it from hitting the protective shroud. Note also that the control rod can interfere with
the movement of the output crank if it sticks out below the connecting link. The rod
should be cut off within ¼ inch (6 mm) of the connecting link, but do not do this until
you are sure about the control rod length.
(b) Slide the circular clamp of the connecting link onto the control rod and tighten
the clamping bolt with a wrench. The output crank should be in a position 45 to
50 degrees below horizontal with the switch fully open after the bolt is tightened.
Figure 19. Locking the decoupling pin in position with a 3/8-inch bolt or padlock.
3/8 bolt or
3/8 hasp
padlock
