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Procedure 12-18
Replacing the fan filters in the air induction roof
This procedure explains how to replace the intake and exhaust fan filters in the
Series 800A cabinet with the NT7A69AA-CA air induction roof options.
Tools required
A screwdriver, flat head, medium, is required.
Materials required
A NT7A6930 fan filter replacement kit is required.
Action
Step
1
2
3
4
5
6
7
8
9
AccessNode Series 800A Outside Plant Cabinet Installation 323-3001-210 Issue 1.0
Action
Open all four equipment compartment doors (front and rear).
Switch circuit breakers CU A and CU B on the breaker interface panel (BIP)
to the OFF position.
Use a screwdriver to loosen the eight thumb screws (four on each side) on
the hinged filter cover on the exhaust fan side (six fans) and the intake fan
side (five fans).
Allow the hinged fan cover to swing down (see Figure 12-23 on page 12-66).
Remove and discard the old exhaust and intake fan filters.
CAUTION
Air filtering requirements
Make sure both filters are seated against the grate for its
entire length. Improper installation allows air, moisture,
sand and other foreign material to bypass the filter.
Replace with new fan filters and tighten thumbscrews.
Switch CU A and CU B on the BIP to the ON position.
Make sure air is flowing into the cabinet through the rain louver intake and out
of the cabinet through the rain louver exhaust.
Close the equipment compartment doors.
—continued—
Cabinet maintenance operations 12-65
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