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NetSure Rectifier Module User Manual (UM1R243000 / 11BJ1307WA)
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Rev. G
22
Rectifier Module Fan Replacement
Each rectifier uses two fans (P/N 32010480) for cooling. If fan replacement should become necessary, perform
the following procedure. It is recommended that both fans in the rectifier be replaced at the same time.
as this procedure is performed.
WARNING!
In a system with NO redundant rectifier, battery must have sufficient reserve to power the
load(s) while the rectifier is removed for fan replacement.
NOTE!
When performing any step in this procedure that requires removal of existing hardware, retain all
hardware for use in subsequent steps.
Procedure
1.
Performing this procedure may activate external alarms. Do one of the following. If possible, disable
these alarms. If these alarms cannot be easily disabled, notify the appropriate personnel to disregard
any alarms associated with this system while this procedure is performed.
2.
Remove the rectifier from the shelf. Refer to the previous procedure for step-by-step instructions.
3.
Place the rectifier on a static-safe work surface. Connect an approved grounding strap to your wrist for
the remainder of this procedure.
4.
Remove the four (4) faceplate mounting screws shown in
from the rectifier. Remove the
faceplate.
5.
For proper orientation of the new fan(s), observe the location of the fan wires and the air flow arrows on
the old fan(s).
6.
Carefully pull the fan(s) out from the rectifier, until the fan power cable(s) can be accessed.
7.
Unplug the fan power cable(s) from connector(s) on the PC board, and remove the fan(s).
8.
Plug the power cable(s) of the replacement fan(s) into the connector(s) on the PC board.
9.
Place the new fan(s) in the space vacated by the old fan(s) (ensure the fan wires and air flow arrows
match the orientation of the old fan), and plug it into the rectifier.
10.
Replace the faceplate on the rectifier. Note that each fan has four holes in the front corners and that the
faceplate has four tabs per fan. When replacing the faceplate, align the fan holes with the faceplate tabs.
Ensure that no fan wiring is pinched. Secure faceplate with the four (4) previously removed screws.
11.
Replace the rectifier into the shelf. Refer to the previous procedure for step-by-step instructions.
12.
When the fans start, check to ensure that each is providing front-to-back airflow. If air direction is
wrong, immediately remove the rectifier from the shelf. Repeat previous steps to check fan orientation,
and correct as necessary. Reinstall the rectifier and again check for proper airflow.
13.
Enable the external alarms, or notify appropriate personnel that this procedure is finished.
14.
Ensure that there are no local or remote alarms active on the system.