Nortel DMS 100 Series Maintenance Manual page 357

If filter surfaces appear
dirty
clean
4 Replace the filter with the same part number as the old unit. Go to step 6.
5 Install the filter in the cabinet again.
6 To power up the cooling unit, place the power switch on the cooling unit in the
on position.
7 The procedure is complete.
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
RSC-M routine maintenance procedures
Inspecting cooling unit filters
Do
step 4
step 5
12-15
(end)