Installation
8
3.6.2
Front- and Rear-Mount Rails—Position and Attach
Front- and rear-mount vertical rails are installed in the Knurr DCM at the factory at 29.13inches
(740mm). They are secured to the 600mm Knurr DCM’s aluminum frame using threaded block
nutbars in the T-slot at top and bottom of the EIA rail and M6 x 12 screws. Mechanical fasteners in
are used in center of the EIA rail to tie into the center depth support member. Vertical rails are
installed in the 700 and 800mm Knurr DCM using a cross-brace at the top; node brackets are used at
the bottom and on the center horizontal rails. The cross-brace and node brackets attach to the cabinet
frame with Torx head screws and nutbar. The rails can be moved to change the front-to-rear distance
between the rails.
Position Vertical Rails in 600mm Cabinet
1.
Determine the proper location of the rails.
2.
Remove the quarter-turn fasteners in the middle of one of the rear vertical rails (see Figure 6).
3.
Loosen the M6 screws from the nutbar that hold the 19" rail in place at the bottom.
4.
Hold the 19" rail to keep it from falling and loosen the M6 screws holding the nutbar at the top of
the 19" rail.
5.
Slide the rail as unit to the desired position, making sure it is properly oriented as described in
the Note above.
6.
Hold the rail in place, then insert and tighten the quarter-turn fastener in the middle of the
vertical rail.
7.
Tighten the M6 screws into the nutbar to reattach the 19" rail.
8.
Repeat Steps 2 through 7 for the corresponding vertical rail.
Figure 6
Vertical rail repositioning—600mm cabinet
NOTE
The front and rear vertical rails must be kept at a 90-degree angle to the upper and lower
aluminum frame members. The left and right front vertical rails must be the same distance
from the front of the rack; the left and right rear vertical rails must be the same distance from
the rear of the rack.
If those conditions are not met, equipment and optional features will be difficult to install.
Quarter-Turn Mechanical
Fasteners in T-Slot in
Aluminum Frame at Top
of Cabinet
T-Slot in
Frame
Quarter-Turn Mechanical
Fasteners in T-Slot in
Aluminum Frame at Bottom
of Cabinet
Quarter-Turn Mechanical
Fastener in T-Slot in
Center Depth Support
