S&C Instruction Sheet 716-502
15
(b) Carefully hoist the operator into place. Be careful
not to damage the uni-ball coupling on the operator
connecting link during hoisting and installation of
the operator to the high-speed base.
(c) Attach the operator support tube mounting plate to
the underside of the high-speed base using four
½
-13
×
1-
¼
hex-head galvanized-steel cap screws,
fl at washers, and self-locking hex nuts. Lubricate
the bolts to facilitate tightening. Tighten all four
screws securely.
STEP 11.
Attach the operator-support angle to the mounting
pedestal using the
⅝
-11
×
1¼-inch hex-head
galvanized steel cap screws, four fl at washers, and
two self-locking hex nuts. Refer to the catalog
drawing for exact placement.
Attach the operator-support plate to the angle
on the side of the operator enclosure and to the
operator support angle on the mounting ped-
estal using the four ½ -13
×
1-¼ -inch hex-head
galvanized-steel cap screws, flat washers, and self-
locking hex nuts furnished. Lubricate the bolts to
facilitate tightening. Securely tighten the screws.
See Figure 1 on page 10 and Figure 9.
On circuit-switchers with two or three mount-
ing pedestals, insert the hole-plugs furnished into
all unused holes in the pedestal.
Installing the Pole-Units
NOTICE
The pole-units are numbered “Pole 1,” “Pole 2,” and
“Pole 3 .” Make sure to install the pole-units in the order
marked on the catalog drawing . Please note that the pole
numbers do not have to correspond with your system’s
phase designations .
NOTICE
Do not disassemble the insulating support columns.
The insulating support columns are filled with lubricated
dielectric filler which prevents contamination from
affecting the dielectric integrity of the column or the
insulated operating rod . An aerator is used at the upper
end of each support column to eliminate water from
being pumped in due to pressure differentials caused
by temperature cycling .
Disassembling the insulating
support column will cause the lubricated filler to
evacuate.
CAUTION
Lift the pole-unit by the pole-unit base only. Do not
attempt to lift the pole-unit by the interrupter or other
live parts . Lifting the pole-unit by any other means can
cause damage to the pole-unit or personal injury .
Figure 9. Hoist operator into position below the high-speed base
using a lifting crane.
Uni-ball
coupling
Operator
support
tube
Stored-energy
housing
Uni-ball
coupling
Operator
support tube
mounting plate
Holes for
½
–13
×
2
¾-inch
hex-head
galvanized steel
cap screws, flat
washers, and
self-locking
nuts
Operator
support
angles
Installation
