Using The Manual Operating Handle - S&C Mark VI Instructions For Installation Manual

Using the Manual Operating Handle

Ç
WARNING
DO NOT operate the Mark VI Circuit-
Switcher with the manual operating handle
while the switch is energized. The manual
operating handle should only be used during
installation and checkout of the switch.
Manual operation of an energized Mark
VI Circuit-Switcher could, in the event
of a fault or loss of control power to
the operator, cause serious injury or
death as well as damage to the Circuit-
Switcher.
Step 50
The manual operating handle should only
be used during installation, checkout, and
inspection of the Circuit-Switcher.
To operate:
a. Pull the latch knob on the hub of the manual
operating handle and pivot the handle for-
ward slightly from its storage position.
b. Release the latch knob while continuing to
pivot the handle forward to lock it into the
cranking position. See Figure 46. (As the
handle is pivoted forward the motor brake is
mechanically released, both leads of the con-
trol source are automatically disconnected,
and both the "opening" and "closing" motor
contactors are mechanically blocked in the
open position.)
c. The disconnect can be opened and closed
by cranking the handle clockwise or coun-
terclockwise, respectively.
To return to the storage position:
a. Pull the latch knob and pivot the handle
approximately 90°. The handle will disengage
from the switch operator and may be rotated
freely in either direction.
b. Complete handle storage by pivoting the
operating handle backward approximately
90° until it latches in the storage position.
NOTICE
The manual operating handle may be
disengaged from the switch operator
mechanism at any position of the handle.
The handle may be padlocked in its storage
position.
WIRING AND ADJUSTING THE SWITCH OPERATOR
Piercing set screws
Manual
operating
handle
Latch knob
Figure 46. Manually operating the disconnect with the manual operating
handle.
31
Vertical shaft
Flexible coupling
Selector handle
(in coupled position)
712-502