Comdial DX-80 Installation & Maintenance Manual page 34

Mounting the KSU
Follow these instructions to mount the KSU.
1. Select a suitable location for the KSU1 considering that the expansion (KSU2) may be installed at the same
time or sometime in the future. KSU1 and KSU2 may be mounted such that they are side-by-side or
mounted one above the other.
2. Using the mounting template as a guide, mark the two (2) mounting screws locations on the MDF
backboard.
3. Pre-drill two (2) screw holes and install the two, pan-head No. 10 screws (supplied) into the backboard with
a regular screwdriver. The screw heads should protrude about 1/4-inch from the backboard plywood
surface.
4. Lift the KSU over the two screws allowing the screws to extend into the KSU slotted mounting holes. As the
KSU is allowed to rest in place on the mounting screws it will slip over the screw shanks until the top of the
slot is reached. Properly installed, the KSU power transformer (where the KSU AC power cord is located) is
positioned in the upper left corner. The power switch and Power/Heartbeat LED are positioned at the left
side of the KSU toward the bottom.
Note: It is very important that the KSU be correctly mounted to allow proper power supply heat
dissipation. KSU1 and KSU2 are intended to be wall mounted only.
5. Ground the KSU. Extend the earth ground #10 wire into the KSU opening at the lower
left corner of the KSU. Terminate the grounding wire onto the ground lug provided there.
P7290 IMM
DX-80 I M
NSTALLATION AND AINTENANCE
Side-by-side
One above the other
2-4
M
ANUAL
Ground LUG