14
Installation Procedure
Mounting the KSU
Select a wall that is strong enough to support the weight of the KSU (maximum 4.5 kg).
Select hardware that will support the system when it is mounted. It is recommended that the KSU
be mounted on a plywood backboard no less than 1.5 mm thick.
Secure the KSU with screws using mounting holes in flanges on right and left sides (Figure 2). Do
not over-tighten the screws or the slots on lefthand side of KSU could be squeezed closed.
Plug in the KSU.
Grounding the KSU
NX - 308 system requires a solid earth ground to the KSU frame (maximum 50 ohms).
Failure to provide an adequate ground may cause confusing trouble symptoms or even circuit board
failure.
In most cases, the third wire ground at the AC power outlet will be satisfactory. If you are not sure
of a good, solid ground on third prong of outlet, connect the grounding lug on KSU to a ground rod
or metal cold water pipe using 10 AWG solid copper wire.
NB: Do not use both methods of grounding. Use only one path to ground. The third wire of
the electrical cord may be disconnected from the power supply board then taped and stored, if
you connect ground through the other path.
WARNING
Hazardous voltages may cause death or injury. Observe extreme caution when
working with AC power line voltage.
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