Belden Grass Valley Kayenne K-Frame, Инструкция по установке и обслуживанию

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84 KAYENNE K-FRAME — Installation & Service Manual
Section 3 — Frames Installation
among the line cords. However, if one or more power supplies go offline, it
is possible for the entire 10 amps to be drawn by one line cord. For this
reason, it is recommended that each line cord be serviced by a dedicated 20
amp circuit. If this circuit is shared by other loads, consider what will
happen if the switcher line cord suddenly doubles its current consumption.
One 20 amp circuit is adequate to service the two K-Frame line cords since
the total current never exceeds 10 amps. The only disadvantage is the
reduced redundancy using one branch circuit instead of multiple circuits.
Most of the above is not an issue if high line (240V) operation is used. Since
AC line currents are approximately half of those at low line, exceeding the
current rating of a circuit should not be a problem. In areas where there is
a choice between high line or low line operation, the user should consider
the advantages and disadvantages of each power sourcing scheme.
Replacing Compact Power Supplies
Compact K-Frame Video Processors come with one power supply with the
option of a second, located in the front of the chassis. Power supplies are
hot swappable in systems containing two power supplies.
CAUTION ESD equipment and procedures should be used when servicing electronic
components.
Remove the power supply.
1. Open the front door of the Compact K-Frame.
2. Locate the lock and lock screw, located in the front, lower middle of the
power supply labeled OPEN and LOCKED.