Paradyne IP Broadband Loop Carrier 4000E - Manual (Page 18)

18 July 2005 IPD4-A2-GZ40-10
Important Safety Instructions
1. Read and follow all warning notices and instructions marked on the product or
included in the manual.
2. Do not attempt to service this product yourself, as opening or removing covers
may expose you to dangerous high voltage points or other risks. Refer all
servicing to qualified service personnel.
3. WARNING: This unit supports a redundant 48 VDC power input connection.
Disconnect both sources of input power before servicing.
4. This product is to be installed only in a Restricted Access Location (dedicated
equipment rooms, equipment closets or the like) in accordance with articles
110-16, 110-17 and 110-18 of the National Electrical Code, ANSI/NFPA 70.
5. This product is to be connected to a 48 VDC SELV supply source that is
electrically isolated from the AC source.
6. The positive terminal of the 48 VDC source is to be reliably connected to
earth. Connect a green/yellow earthing (grounding) wire to the protective
earthing (grounding) lug connector, identified by the protective earth symbol
on the chassis.
7. A readily accessible disconnect device as part of the building installation shall
be incorporated in fixed wiring. The disconnect device (a 48 VDC, 10 A, single
pole circuit breaker or switch) must be included in the ungrounded supply
conductor. Over current protection must be included with a 48 VDC, 10 A fuse
or circuit breaker in the ungrounded conductor. Use minimum 16 AWG
(2.5 mm
2
) fixed power source wires with strain retention.
8. Do not allow anything to rest on the power cord and do not locate the product
where persons will walk on the power cord.
9. Slots and openings in the cabinet are provided for ventilation. To ensure
reliable operation of the product and to protect it from overheating, these slots
and openings must not be blocked or covered.
10. General purpose cables are described for use with this product. Special
cables, which may be required by the regulatory inspection authority for the
installation site, are the responsibility of the customer. To reduce the risk of
fire, use a UL Listed or CSA Certified, minimum No. 26 AWG (0.128 mm2)
telecommunication cable, or comparable cables certified for use in the country
of installation.
11. A rare phenomenon can create a voltage potential between the earth grounds
of two or more buildings. If products installed in separate buildings are
interconnected, the voltage potential may cause a hazardous condition.
Consult a qualified electrical consultant to determine whether or not this
phenomenon exists and, if necessary, implement corrective action prior to
interconnecting the products.
12. In addition, if the equipment is to be used with telecommunications circuits,
take the following precautions:
— Never install telephone wiring during a lightning storm.
!