SIGMA MRX Series - Manual (Page 8)

5
REAR SUPPORTS
Depending upon the installation, it may be necessary to install the included rear mounting frame supports.
These supports are designed to allow connection to rear rails positioned between 19 and 30 inches from the
front supports. To install, follow the directions below.
Rear Support Installation Instructions
Refer to illustration below for reference letters.
1. Prior to installation of the frame into the rack, attach an extender bar (A); the flat piece with the
countersunk holes at one end; to each side of the frame using the four (4) supplied #8-32 undercut,
flathead screws (B) through the countersunk holes and into the threaded inserts in the side of the
frame. NOTE: Undercut, flathead screws must be used to provide adequate clearance and proper
fit.
2. Install the frame into the equipment rack, securing the front mounting brackets with the supplied
#10-24 plastic-coated, rack-mounting screws. For shorter front to back rack-mounting applications,
be certain both extender bars are positioned between the vertical, rear mounting rack rails.
3. Install both rear mounting brackets (C) over the end of the extender bars with the angled portion
pointing toward the outside.
4. Secure the rear mounting bracket © to the rear of the rack using #10-24 plastic-coated, rack-
mounting screws.
5. Install at least one of the supplied #8-32 panhead screws (D) through the extender bar and into the
threaded inserts in the mounting bracket on each side. For greater security, an additional screw
may be installed where possible.
Rear Support Installation (right side only shown)