Nortel North American DMS-100 Instruction Manual page 211

1-196 Trouble locating and clearing procedures (continued)
Replacing a fan in a 28-in. cabinet
Replacing a fan in a 28-in. cabinet
At the front of the cabinet
1
2
3
4
297-8021-544 Standard 14.02 May 2001
Open the cabinet doors.
DANGER
Risk of personal injury
A risk of electrocution exists. Avoid contact with the cabinet
wiring.
DANGER
Risk of personal injury
Avoid contact with the rotating fan blades.
Turn the FAN FAIL OVERRIDE switch ON.
Locate the filter access panel at the bottom of the cabinet. To open the panel,
slide the catches toward each other (A) and swing the panel down (B).
A
Filter access panel
Record which fan has faults.
(continued)
B
A