ISSUED: 04-11-06 SHEET #: 055-9458-1
Visit the NEC Web Site at www.necsam.com
8 of 9
For customer care call 1-800-729-0307 or 708-865-8870.
Screw extension column to ceiling plate (G).
Align the notch with one of the four holes in
the ceiling plate (G) and secure extension
column with a M5 x 10 mm socket pin
screw (C) using security allen wrench (B).
See detail 4.
Screw extension column connector (I) to
extension column. Align slot in extension
column with one of the top holes in
extension column connector (I). Insert and
tighten one #10-32 x 3/8" socket pin screw
(J) through extension column connector (I)
into slot on extension column using security
allen wrench (B). See detail 5.
Screw ball and socket mount (A) to
extension column connector (I). Align slot in
ball and socket mount (A) to one of the
bottom holes in extension column connector
(I). Insert and tighten one #10-32 x 3/8"
socket pin screw (J) through extension
column connector into slot in ball and
socket mount (A) using security allen
wrench (B). See detail 6.
Note: Slotted set screws (K) are used to
jam against the threads of each connecting
joint to prevent any excess movement. Do
not overtighten screws; overtightening
screws will damage threads making it
difficult to separate the products.
DETAIL 6
SLOT
SLOT
G
I
DETAIL 5
DETAIL 4
EXTENSION
COLUMN
C
G
Installation to
Extension Column
A
K
A
EXTENSION
COLUMN
SLOT
I
J
EXTENSION
COLUMN
SLOT
I
J
K
K
EXTENSION COLUMN
(UL Listed EXT or ADJ
Series)
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