Nortel North American DMS-100 Instruction Manual page 92

Repairing and replacing NT3X90AF cooling units
Diagram of cooling unit
Fuses
Repairing and replacing NT3X90AF cooling units
At the FSP
1
To silence the alarm, turn ON the FAN FAIL OVERRIDE switch.
At the frame
2 Remove the air intake grill and filter assembly from the front of the cooling
unit.
DMS-100 Family Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures
DANGER
Next level of support
The cooling unit configuration in the frame can
differ from the following description. If you
encounter an important difference, contact your
next level of support.
(continued)
Wiring harness
Fan
Mounting
Flanges
-5