INM 9370-RD Rev 5
19
5.4.1 Removing a Spur Surge module & spur cable adjustment
If an FS32 Spur Surge module needs to be removed from circuit, it will probably be
necessary to increase the cable length inside the enclosure slightly to allow the spur
wiring connector to be plugged into the circuit board. Use the following procedure.
a) Loosen the two screws securing the pluggable, spur-wiring connector to the
Spur Surge module and unplug it.
b) Loosen all three of the Spur Surge module’s fixing screws and unplug it from the
carrier.
c) Loosen the spur cable gland.
d) Pull an additional 20 mm (approx.) of additional cable length into the enclosure.
e) Plug the spur connecting plug into its mating socket on the barrier carrier and
tighten the fixing screws to a recommended torque value of 0.4 Nm.
f) Finally, make any necessary adjustments to the cable to avoid any tension, then
tighten the spur cable gland to clamp the cable to retain the IP rating of the
enclosure.
5.4.2 Adding a Spur Surge module & spur cable adjustment
If an FS32 Spur Surge module is added, it will probably be necessary to reduce the
cable length inside the enclosure slightly when connecting the spur wiring connector
to the Spur Surge module. Refer also to Section 4.6.1 on page 13 for further fitting
details.
a) Loosen the two screws securing the pluggable, spur-wiring connector to the
carrier and unplug it.
b) Plug the Spur Surge module into the vacant socket on the carrier and tighten the
two fixing screws and its grounding screw, all to a recommended torque of 0.4
Nm.
c) Loosen the spur cable gland.
d) Withdraw approximately 20 mm of the cable length from the enclosure.
e) Plug the spur connecting plug into its mating socket on the Spur Surge module
and tighten the fixing screws to a recommended torque of 0.4 Nm.
f) Finally, make any necessary adjustments to the cable to avoid any tension,
then tighten the spur cable gland to clamp the cable to retain the IP rating of
the enclosure.
5.5 Trunk connections
WARNING!
No work is permitted on any part of the Trunk Terminal Assembly
while the enclosure is powered, unless the environment is known to
be non-hazardous.
Before any work starts on the Trunk Terminal Assembly the trunk power to the
enclosure must be isolated, or a gas clearance certificate obtained.
Once the conditions are known to be safe, the protective plastic cover of the Trunk
Terminal Assembly (TTA) may be removed. Unscrew its securing screw, slide it out
until it becomes free and then move it to the side to obtain access.
Refer to Section 4.2 on page 8 and Section 4.3 on page 11 for additional
information about trunk wiring connections.
When any changes or checks have been carried out, ensure there are no loose
implements left inside the TTA before replacing its protective cover. Slide the cover
into its locations and tighten the securing screw to a recommended torque of 0.6
Nm.
