INSTRUCTION SHEET
716-600
Page 11 of 24
February 11, 2002
S&C ELECTRIC COMPANY
INTERRUPTER REPLACEMENT ON MODELS 2020, 2025, AND 2030 — Continued
(e) Now remove and discard the
⁵⁄₁₆
—18
2
¹⁄₄
hex-head
stainless-steel screw, stop bracket (marked with a
black/yellow striped label), and spacer (marked with a
black/yellow striped label) illustrated in Figure 5.
(f) Replace the access cover retained from Step 4 and
securely tighten the associated
⁵⁄₁₆
—18
³⁄₄
hex-head
stainless-steel cap screws.
Step 12
Remove the interrupter lifting bracket and associated
¹⁄₂
-inch stainless-steel hardware from atop the interrupter.
Discard the lifting bracket but retain the hardware.
Thoroughly wire-brush the indicator end casting where
the terminal pad is to be attached, as well as the mating
surface on the upper terminal pad, and immediately apply
a liberal coating of Penetrox A or other suitable
aluminum connector compound to the brushed surfaces.
Then attach the upper terminal pad using three
¹⁄₂
—13
1
¹⁄₄
hex-head stainless-steel cap screws and
Belleville washers. Reconnect the high-voltage
conductor(s).
Step 13
Remove the container from the replacement interrupter
as follows:
(a) Remove and discard the
³⁄₈
—16 zinc-plated serrated
hex nuts which run the length of the container.
(b) Remove and discard the two
³⁄₈
—16
1
and two
³⁄₈
—16
⁷⁄₈
zinc-plated hex-head cap screws and flat
washers which attach the two container-halves to the
coupling end casting
of the interrupter.
(c) Remove and discard the two
³⁄₈
—16
1
and one
³⁄₈
—16
⁷⁄₈
zinc-plated hex-head cap screws and flat
washers which attach
one
of the container-halves to
the
indicator end casting
of the interrupter. Don’t
remove the remaining
³⁄₈
—16
⁷⁄₈
cap screw—it’s
needed to temporarily retain the other container-half.
(d) Pry the container-halves apart with a screwdriver. One
of the container-halves can now be removed and dis-
carded—slotted holes are provided so that a rope or
lifting sling can be attached and the container-half
more conveniently lowered to the ground.
(e) Now remove and discard the remaining
³⁄₈
—16
⁷⁄₈
hex-head cap screw and flat washer which attach the
other container-half. Then discard this container-half.
(f) Finally, remove and discard the foam-core inner liner
wrapped around the interrupter.
Step 14
Replace the trip-circuit and control-circuit fuseholders in
the operator or—on newer operators—close the control-
source disconnect switch and replace the motor-and-
closing circuit fuseholder.
Step 15
Attach lifting slings to the four lifting rings on the
replaced interrupter container.
Do not
loop slings from
one end of the container to the other. Carefully lift the
interrupter into the replacement interrupter shipping
crate. Secure the interrupter and close the lid.
Step 16
Ship the replaced interrupter, transportation charges
prepaid, to S&C Electric Company, Repair Center, 1800
Devon Avenue, Chicago, Illinois 60660-1010. To ensure
proper handling, purchasers are asked to obtain from the
nearest S&C Sales Office a special serially numbered
label to place on the shipping crate. Please enclose a
packing slip showing purchase order or requisition
number covering the exchange.
