Vertiv NetSure 731 A91, User Manual

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Chapter 4 Troubleshooting 17
NetSure 731 A91 Subrack Power System User Manual
Symptom Related alarm Possible cause(s) Suggested action(s)
Fault indicator on(red)
Rect HVSD Rectifier over-voltage
Reset the rectifier. If the protection is
triggered again, replace the rectifier
Rect fail
Rectifier module addresses
contradictory.
Replace the rectifier module.
Severe load sharing
imbalance.
positive and negative deviations of
average current ≤ 2.5A
Check whether the rectifier
communication is normal. If not, check
whether the communication cable is in
normal connection. If the
communication is normal while the
protection indicator is on, replace the
rectifie
Fault indicator flash
(red)
Rect Fan Fails Fan fault Replace the fan.
R48-3000e3/R48-3500e3 Replacement
Rectifier modules can be inserted or removed with power applied (hot swappable).

Note:
Each rectifier module locks into a module mounting shelf by means of a latch located on the bottom of the module. The latch
and rectifier module handle are interactive. Pushing the handle up into the module’s front panel causes the latch to extend to the
locking position; pulling the handle down out from the module’s front panel causes the latch to retract.
Danger
DANGER!
Take care when removing a rectifier module that was in operation, as rectifier module surfaces could be very hot.
Warning
WARNING!
To prevent damage to the latching mechanism, ensure the handle is in the open position when installing or removing a rectifier
module. NEVER hold the handle in the closed position when installing a rectifier module into a shelf.
Procedure
Refer to Figure 4-4 as this procedure is performed.
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. Loosen the captive screw o
n the module’s handle. Pull the handle down out from the module’s front panel (this will
also retract the latch mechanism).
3. Grasp the handle and pull firmly to remove the module from the shelf.
4. Place the replacement rectifier module into the mounting position without sliding it in completely.
5. Loosen the captiv
e screw on the module’s handle. Pull the handle down out from the module’s front panel (this will
also retract the latch mechanism).
6. Push the module completely into the shelf.
7. Push the handle up
into the module’s front panel. This will lock the module securely to the shelf. Tighten the
captive screw on the handle.
8. Certain functions (i.e. rectifier current limit, rectifier addressing) may require adjustment when adding or replacing a
rectifier module.
9. After the rectifier modules are physically installed in the mounting shelf(s), they are ready for operation immediately
after power is supplied to them. Verify that the rectifiers are operating normally.
10. Enable the external alarms, or notify appropriate personnel that this procedure is finished.
11. Ensure that there are no local or remote alarms active on the system.