Power Supply Safety Information; Installation Precautions - Zhone MXK Hardware Installation Manual

Installation precautions

Power supply safety information

Install an equipment grounding conductor not smaller in size than the
ungrounded branch-circuit supply conductors as part of the circuit that
supplies the product or system. Bare, covered, or insulated grounding
conductors are acceptable. Individually covered or insulated equipment
grounding conductors should have a continuous outer finish that is either
green, or green with one or more yellow stripes. Connect the
equipment-grounding conductor to ground at the service equipment.
Avoid creating a hazardous condition by maintaining even weight distribution
within the chassis.
WARNING! Two people are required to lift the MXK 819 or
MXK 823 systems because they weigh too much for one person to
lift. Do not attempt to lift the system chassis without assistance or
personal injury can result.
Maximum operating temperature should not exceed 55
temperature of the rack environment may be greater than ambient room
temperature when the system is installed in a closed or multiunit rack
assembly. Observe the maximum recommended operating temperature as
indicated here.
Do not block system air vents; this will deprive the system of the airflow
required for proper cooling. Sufficient clearance must exist on all sides of the
rack to permit equipment access.
Zhone recommends using cabling ducts for cable routing in rack mounts.
To facilitate proper cooling, cover unpopulated slots with a blank front panel.
All slots must have a card or a blank panel installed at all times for EMC,
safety and cooling requirements.
The system ships with mounting brackets. To avoid overloading the mounting
brackets, and damaging the system, do not use the MXK chassis to support
other equipment after it is mounted in the rack.
Connect the system to the power supply circuit as described in this document.
Do not overload the system or power supply circuit.
Ensure that proper system grounding is performed and maintained. Use power
supply connections for grounding instead of branch circuitry (such as power
strips).
Pre-installation preparation
0 0
C (131 F). The
MXK Hardware Installation Guide
29