FieldSmart
®
Fiber Active Cabinet (FAC) 400
Installation Manual
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Proprietary Information: Not for use or disclosure except by written agreement with Clearfield.
82
Installing 5-Pin Protection Modules
To complete the circuit connections between the metallic outside plant cables and equipment, you must install 5-pin
protection modules into the 50-pair protection blocks. The 5-pin protection modules serve as fuses to protect the equipment
from electrical surges on the lines.
Each 5-pin position on the block protects one wire pair (one 2-wire circuit). Install a 5-pin protection module into each block
position (circuit) that will be equipped for service. Refer to the cabinet pair assignment list for more information.
Note:
Clearfield equipment uses a ‘dead pair’ scheme, where the 25th pair in each 25-pair cable group is unterminated
(dead). Therefore, on each protection block, positions 25 and 50 are not wired. Line identification labels cover the dead
pair positions.
To seal the cable entry locations
Sealing Cable Entry Locations
Warning!
-
Seal all cable entry locations immediately after the cabinet is installed to prevent
ground moisture from condensing inside the cabinet and damaging equipment.
Failure to take
these preventive measures will void cabinet warranty.
Open the cabinet’s side door or battery compartment riser door.
Adjust or trim the rubber cone gaskets on the cable entry ducts to create a tight seal around the cables,
as required.
If required, prepare the sealant for application per the manufacturer instructions.
Apply the sealant around any open areas on the entry ducts where cables enter the cabinet or riser. Seal all
gaps around the cables per the manufacturer instructions.
Step 1:
Step 2:
Step 3:
Step 4:
CAUTION!
Only a qualified technician should perform this procedure.
Seal the cable entry locations to protect the cabinet and riser against moisture, dust, pests, and other contaminants. Use a
silicon-based sealant or comparable compound.
Note:
Alternatively for cabinets with a battery compartment, you may invert the rubber cone gaskets and then inject a
foam-type sealant into the cones around the cabling.