HP Parallel Uninterruptible Power System User Manual
Page 82
Maintenance 82
NOTE:
Do not disconnect the electronics module while the UPS is in Battery mode.
This component is hot-swappable and can be replaced without powering down the UPS. However, Battery
mode is not available and the load is not protected.
1.
(optional) To replace the component with the UPS powered down, do one of the following:
o
Standalone UPS configuration—See "Powering down the standalone UPS (on page
)."
o
Individual UPS in a parallel configuration—See "Powering down an individual paralleled UPS (on
page
)."
o
Parallel UPS configuration—See "Powering down the parallel system (on page
)."
2.
Do one of the following:
o
Standalone UPS configuration—Transfer the UPS to Auto-Bypass mode (on page
o
Parallel for capacity configuration—Transfer the UPS to Auto-Bypass mode (on page
o
Parallel for redundancy configuration—No mode transfer is necessary. If the UPS is operating in a
parallel for redundancy configuration when the electronics module is replaces, the load
automatically transfers to the remaining UPSs.
NOTE:
Disconnecting the control panel from the electronics module automatically transfers the
UPS to Auto-Bypass mode. However, HP recommends transferring the UPS to Auto-Bypass mode
manually BEFORE disconnecting the control panel to provide extra protection to the electronics
module.
3.
If the configuration is parallel, disconnect the redundant signal cable(s) from the UPS.
For the location of the redundant signal cable, see "Configuring the Parallel UPS Card (on page
)."
4.
Remove the UPS front bezel ("
" on page
5.
Remove the screw securing the electronics module and slide the module out.
6.
Replace the electronics module. Be sure the electronics module is firmly seated in the connector.