ADTRAN 1248 - Manual (Page 230)

Total Access 1248 Octal T1 IMA DSLAM with Modem Installation and Maintenance Practice
6-2 61179641AL4-5B
To remove a fan module, perform the following steps:
1. Loosen the screw that holds the fan module in place.
2. Remove the fan module by pulling it straight out of the chassis.
To install a new fan module, perform the following steps:
1. Insert the new fan module by pushing it straight into the chassis.
2. Tighten the screw that holds the fan module in place.
Fan Filters
The Total Access 1248 Expansion DSLAM fan module comes with a single fan filter. The filter
is designed to remove particles from the air before it is pushed through the system.
Replacement filters are available from ADTRAN. This filter should be inspected at least every
90 days and replaced as necessary.
To replace a filter, remove the fan module, remove the old filter material and tuck the new
filter in, ensuring that the edges of the filter are behind the metal tabs provided to hold the
filter (see
Figure 6-1 ).