Nortel North American DMS-100 Instruction Manual page 84

1-68 Trouble locating and clearing procedures (continued)
Repairing and replacing NT3X90AB cooling units
16
297-8021-544 Standard 14.02 May 2001
WARNING
Loss of frame cooling
Removal of the cooling unit for an extended period of time
can cause the equipment in the frame to overheat.
Ease the cooling unit toward you until it is half-way out of the frame.
(continued)
Sensor switch
for the air flow
Fan