Avaya 03-300430 User Manual

 

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VARIABLE-SPEED FAN ASSEMBLIES:  One or more fans have stopped.  
If none of the fans are running:

1. Resolve every alarm against 

 Resolve every alarm against RMC-ENV.

2. Verify that 48 VDC is available to the fan power filter at the J2F local 

cable connector.  The voltage range is -42.5 V to -52.5 V.  There should 
be 48 VDC between the following pin pairs: 2/3, 8/9, 10/11.  If -48 VDC 
is absent, replace the CFY1B current limiter card.

3. If there are 48 VDC at the power filter’s input, follow this procedure to 

verify that there are also 48 VDC at the power filter’s output to avoid 
damage to the fan alarm circuit. (Note that the J2F/P2F connectors on 
the power filter must be disconnected whenever connecting or 
disconnecting the J2/P2 connectors on the fan assembly. 

a. Disconnect connector J2F from P2F on the top of the filter.

b. Disconnect J2 from P2 on the fan assembly.

c. Reconnect J2F to P2F on the filter.  (There should be 48 VDC 

between the following pin pairs on the J2 connector: 2/3, 8/9, 10/11.)

d. If 48 VDC is present, the fans should have power.  Make sure every 

power connector is sound and making good contact.  (Be sure to 
disconnect the J2F/P2F connector again before reconnecting the 
J2/P2.)

e. If not, replace the fan power filter using the previous procedure 

described.  (Be sure to disconnect the J2F/P2F connector again 
before reconnecting the J2/P2.)

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