Juniper Networks EX4200 - Manual (Page 213)

Chapter 14
Routine Maintenance
■ Maintaining Fiber-Optic Cables in EX Series Switches on page 187
Maintaining Fiber-Optic Cables in EX Series Switches
To maintain fiber-optic cables in EX Series switches:
■ When you unplug a fiber-optic cable from a transceiver, place rubber safety caps
over the transceiver and on the end of the cable.
■ Anchor fiber-optic cable to avoid stress on the connectors. When attaching a
fiber-optic cable to a transceiver, be sure to secure the fiber-optic cable so that
it is not supporting its own weight as it hangs to the floor. Never let a fiber-optic
cable hang free from the connector.
■ Avoid bending fiber-optic cables beyond their minimum bend radius. Bending
fiber-optic cables into arcs smaller than a few inches in diameter can damage
the cables and cause problems that are difficult to diagnose.
■ Frequent plugging and unplugging of fiber-optic cables in and out of optical
instruments can damage the instruments, which are expensive to repair. Attach
a short fiber extension to the optical equipment. Any wear and tear due to
frequent plugging and unplugging is then absorbed by the short fiber extension,
which is easier and less expensive to replace than the instruments.
■ Keep fiber-optic cable connections clean. Micro-deposits of oil and dust in the
canal of the transceiver or cable connector can cause loss of light, reduction in
signal power, and possibly intermittent problems with the optical connection.
To clean the transceiver canal, use an appropriate fiber-cleaning device such as
RIFOCS Fiber Optic Adaptor Cleaning Wands (part number 946). Follow the
directions in the cleaning kit you use.
After cleaning the transceiver, make sure that the connector tip of the fiber-optic
cable is clean. Use only an approved alcohol-free fiber-optic cable cleaning kit
such as the Opptex Cletop-S® Fiber Cleaner. Follow the directions in the cleaning
kit you use.
Related Topics ■ Handling and Storing Line Cards in EX8200 Switches
■ Maintaining Line Card Cables in EX8200 Switches
■ Installing a Transceiver in an EX Series Switch on page 136
■ Laser and LED Safety Guidelines and Warnings for EX Series Switches on page 213
Maintaining Fiber-Optic Cables in EX Series Switches ■ 187