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32
Installing a -48 Vdc Power Distribution System
(9)
(10) Open and close the rear door to verify that it opens smoothly. If it
(11) Repeat Steps 1 to 10 for each cabinet door.
Adding a Cabinet to an Existing System
The system is designed to be easily expanded by the addition of new cabinets.
New cabinets are always added to the right of the existing lineup, as viewed
from the front. This convention accommodates the communications addressing
scheme used in the system.
When adding a new cabinet or cabinets, proceed as follows:
(1)
(2)
(3)
(4)
Maneuver both the fan cover and rear door so that the top hingepin is
inserted into the hingepin hole in the bottom of the fan cover. Push in
on the fan cover and the top of the door at the same time until they are
vertically straight.
The two assemblies may be difficult to engage. Some force is
required, and the hingepin may be slightly bent. Take care not to
bend it too much or to crack the plastic of the assemblies.
doesn't, adjust the fan cover by loosening the screws and moving the
mounting bracket forward or backward.
Note: The doors are held closed by magnets on the cabinet frame.
If the system is powered up, make sure all users have logged off the
system, then remove the power by unplugging the power input cable
from the base of the input connector assembly.
Remove the foot assembly from the left-most cabinet, as viewed from
the rear. (See Fig. 4-4.) Set it aside for now.
Take off the rear door of the left-most cabinet, as viewed from the rear,
by removing the screw from the hinge plate at the base of the door with
a 5/64-inch Allen wrench. (See Figures 4-9 and 4-10.)
Locate the terminating jumper assembly, which is on the left side of the
cabinet, as viewed from the rear.
When released, the latches on the terminating jumper assembly can
snap back rapidly. Release them with care.
- CAUTION -
- WARNING -
Practice 450-1011-201
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