CHIEF RPA Series - Manual (Page 5)

Installation Instructions RPA Series
5
IMPORTANT ! : When RPA is properly positioned, the
set screw access hole should be pointing directly at
target, or 180° AWAY from target.
4. Secure RPA to structure using four 1/4" x 2" minimum length
lag bolts (not included) and four 1/4" flat washers (not
included). (See Figure 3)
NOTE: If the wood framework structure allows, the hardware
may be installed from above the RPA projector mount.
Figure 3
5. Proceed to Installing Projector with Interface Bracket
section.
Installing to Threaded Rod
NOTE: The RPA projector mount may be suspended from four
1/4-20 steel threaded rods (not included) which are
secured to unistrut by 1/4-20 Grade 2 or better channel
nuts (not included), or to angle or channel assembly
overhead structural members (trusses or I-beams) by
1/4-20 Grade 2 or better jam nuts (not included).
Threaded rods must have 16 threads per square inch.
1. Secure one end of each of the four threaded rods (not
included) to the structural member.
2. Install one 1/4-20 jam nut (not included) and one 1/4"
washer (not included) onto each threaded rod.
3. Install RPA onto threaded rods, inserting the rods into the
four slots on top of the RPA.
NOTE: Hole in the RPA allows socket wrench access without
unit disassembly.
4. Secure the threaded rods to the RPA with one 1/4-20 jam
nut (not included) and one 1/4" washer (not included) on
each threaded rod. (See Figure 4)
Figure 4
5. Proceed to Installing Projector with Interface Bracket
section.
PROJECTOR INSTALLATION
IMPORTANT ! : Model RPA uses optional Chief "SLB"
Series interface brackets. See Parts drawing.
1. Attach projector to interface bracket (B) using installation
instructions and hardware included with the interface
bracket.
NOTE: Security screws can be substituted when mounting
interface bracket to projector by using the hardware
and installation instructions in the All-Points Security
Kit (included with interface bracket).
4 x 4
3
1
Secure to unistrut
using channel nuts
3
4
Secure with jam
nuts and washers
(not included)
(not included).
Threaded
rods
(A)
Secure to angle or
channel assembly
using jam nuts
(not included).