User's Manual

Component Descriptions
September 2013 2-22 P/N 81-CO2MAN-001
2-3.3.1 MECHANICAL PULL BOX
The mechanical pull box, Part No. 81-871403-000 (Figure 2-23), is a cable connected, pull-
handle-type remote release station used for actuating carbon dioxide cylinders and associated
directional (stop) valves. The pull box is designed to transmit a force via a 1/16-inch cable to
the cable operated control heads attached to the pilot CO
2
cylinders and the appropriate flow-
control valves. A hammer is attached to the pull box, and operation is accomplished by
breaking the glass front with the hammer and pulling the handle.
Figure 2-23. Mechanical Pull Box
2-3.3.2 MECHANICAL PULL BOX Z-BRACKET
The mechanical pull box Z-bracket, Part No. 81-605320-000 (Figure 2-24) is used to attach
the mechanical pull box to a wall or a rigid structural member. This bracket provides sufficient
offset of the pull box from its mounting surface to allow penetration from behind by the cabling
system.
Figure 2-24. Mechanical Pull Box Bracket
FOR FIRE
BREAK GLASS PULL HANDLE
PULL HARD
OPTIONAL
NAMEPLATE
(BY INSTALLER)
2-NAMEPLATE BRACKETS
(SUPPLIED WITH PULL BOX)
3/8 in. PIPE
1/16 in. CABLE
2-1/4 in.
(57 mm)
5 in.
(127 mm)
4-COVER
SCREWS
PULL
HANDLE
HAMMER
P/N 928103
BREAK GLASS
P/N WK-928103-000
5-7/8 in.
(149 mm)
1/16 in. CABLE
CORNER PULLEY
CONDUIT NIPPLE
Z-BRACKET
P/N 81-605320-000
(3) HOLES FOR 1/4 in.
MOUNTING BOLTS HERE
3-9/16 in.
(90 mm)
4-1/2 in.
(114 mm)