Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 263 / 874

Chapter 17 Hardware procedures 263
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
2 Check the security of the cable fastening by gently but firmly wiggling the
cable between the insulating boot and the first tie-wrap.
• If the cable moves, ensure that the nearest tie-wrap is snug enough.
• If the cable still moves, unfasten the Pozidriv screw that retains the
boot clamp, slide the boot away from the lug, and wiggle the cable
again. Determine if the cable moves because the lug crimp is
insufficient or the lug is not tight enough. Re-crimp the lug or re-
torque the nuts to 6.5 Nm (57.5 in.-lbs).
3 When a power-and-ground cable assembly is installed, check the security
of each cable entering a terminal block. If any cable wiggles, tighten the
clamping screw until the wiggling stops. If the wiggling persists, determine
why and fix it.
4 Trace each cable away from the BIP to its next terminations up to the
power source. At each junction or panel, ensure both halves of the
connection are labelled and match the BIP end.
If any label does not match, correct the label or the change the
connection, and trace all connections back to the BIP to confirm an end-
to-end match.
CAUTION
Risk of damage to power connections
The metal of the top stud of each pair is softer than the
bottom lug because of increased electrical conductivity.
Ensure that you do not overtighten either stud, nor leave
one too loose. Damaging a stud means its BIM cannot be
powered up until the BIP is replaced.