29
OPERATION
How To Remove A Single UPS From A Parallel System
1.
First, the parallel system must be installed one main maintenance bypass switch.
2. Ensure the bypass of the parallel system is normal and the bypass setting is "enable".
Press the “ON/OFF” button of one UPS, each UPS would turn off and transfer to the
Bypass mode.
3. Set the main maintenance bypass switch from "UPS" to "BPS", switch off the main output
and input breaker, the UPS would shut down.
4. Ensure the UPS shut down totally, remove the wanted UPS and reinstall the new UPS
parallel system by following step 1 to 10 of
<How To Install A New Parallel UPS System>
.
5. Switch on the main input breaker and the main output breaker, and set the main
maintenance bypass switch from "BPS" to "UPS", Press the button of one UPS, each UPS
would start to turn on and the UPS should operate parallel in the Line mode.