Nortel North American DMS-100 Instruction Manual page 177

1-162 Trouble locating and clearing procedures (continued)
Replacing a cooling unit fan
CPC A0345301
14
15
At the front of the PDC
16
At the front of the CPDC
17
At the front of the cabinet
18
19
20
21
22
297-8021-544 Standard 14.02 May 2001
(continued)
Connect the electrical connector of the replacement fan to the corresponding
electrical connector of the cabinet.
Determine if power for the cooling unit connects through a circuit breaker at
the CPDC.
If the power for the cooling unit
connects through a PDC
connects through a CPDC
To insert the cooling unit fuses, push the fuse cartridges straight into the front
panel of the PDC.
Go to step 18.
Throw the circuit breakers for the cooling unit.
Determine if the replacement fan works.
If the replacement fan
works
does not work
Reinstall the kickplate assembly.
Note: Step 8 shows the location of the kickplate assembly.
Reinstall the filter basket.
Note: Step 8 shows the location of the filter basket.
Reinstall the cooling unit intake grill.
Note: Step 8 shows the location of the cover mounting screws for the
intake grill.
Close the cabinet doors.
Do
step 16
step 17
DANGER
Risk of injury
Electricity can arc when you throw a circuit breaker for the
cooling unit. Wear eye protection.
Do
step 19
step 23