Juniper Networks G10 CMTS manual Safety Precautions

Safety Precautions

! Remove all jewelry that can act as a conductor of electricity such as watches, rings,		•
bracelets, and necklaces.		•
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! Prior to making any power connections, locate the emergency power-off switch and		•
ensure that the path between where the G10 CMTS will be installed and the power-off		•
switch is unobstructed.		•
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! Prior to making any power connections, survey the immediate area to ensure that no		•
additional electrical safety hazards exist (such as ungrounded equipment or power		•
cords, or damp, moist areas that could conduct electricity).		•
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! Ensure that the power supply switches on the rear of the G10 CMTS are in the OFF (O)		•
position prior to connecting any power cords.		•
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! Use the factory-supplied AC power cords. These cords are grounded and appropriately		•
rated for the G10 CMTS.		•
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! Use the factory-supplied DC power cord ring lugs, and wire according to your local code		•
for the DC power cord connection to the G10 CMTS.		•
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! Attach all power cords to their appropriate terminals (AC or DC) in the rear of the G10		•
CMTS prior to plugging any power cord into its respective power source (AC or DC).		•
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! Never apply excessive force when attaching a power cord to a terminal or power source		•
if it does not readily mate with ease. Having to apply an unusual amount of force might		•
indicate that electrical leads are bent and damaged, or that an improper connection is		•
being attempted.		•
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! Ensure that the G10 CMTS chassis is properly grounded to earth prior to connecting any		•
source of power. See “Ground the Chassis” on page 94 for more details.		•
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	During the preparation and installation of the G10 CMTS,	•
		•
	we strongly recommend that you adhere to the
		•
	precautions presented in this section to avoid damaging
		•
	the G10 CMTS.
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! Before handling any G10 CMTS module, always wear an ESD ground strap that is		•
connected to the ESD strap jack located on the front of the chassis.		•
		•
! Leave all modules in the anti-static bags they are shipped in until you are ready to install		•
the modules into the G10 CMTS.		•
		•
! Handle all modules by their card edges or ejectors and avoid directly touching any		•
component on a module.		•
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! Ensure that all modules and power supplies are properly aligned and mated to their		•
respective midplane connectors prior to powering up the G10 CMTS. Check that all		•
captive retainer screws are securely tightened according to the torque specifications		•
provided herein.		•
		•
! Air management modules and air management panels must always be installed in		•
empty slots while operating the G10 CMTS to ensure that proper air ventilation occurs		•
throughout the chassis, and to reduce electromagnetic interference (EMI) emissions.		•
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Prepare the Site 69