•
Turn power off at the circuit breaker before proceeding.
•
Place a small amount of sealing compound granules,
enclosed, into a
clean mixing vessel. Add small amounts of
water while stirring until a
thick paste is formed, then
carefully continue adding smaller amounts
of water until a
thick gravy consistency is achieved—NOT WATERY.
Discard any material that becomes too stiff to use. Never
attempt to
restore workability by stirring in more water.
•
Locate silver Killark box, back/top-center of unit.
•
Unscrew conduit domed-cover.
Note: KILLARK ® is a registered trademark of Hubbell
Incorporated,
Shelton, CT, US
A.
Figure 1: Sealing the Killark Box
ϵ
How to Seal Killark® Box Conduit with Fiber and Sealing Compound
to Help Protect Against Explosions (Explosion-Proof Units Only):
The purpose of the procedure that follows is to build fiber rope dams on
the left and right hubs of the horizontal conduit. The fiber rope dams will
surround conduit wiring that is housed inside the horizontal conduit.
When both the left and right fiber rope dams have been pressed into
place, sealing compound is poured between the two and forms into an
airtight plug.
All of this is done in order to prevent the very real threat of gas entering
the Killark box and a resulting serious explosion.
After the unit wires have
been pulled through the horizontal conduit the following procedure is
required:
I
NSTALLATION