Manual Bypass Mode Turn-Off Procedures - Delta Ultron HPH Series User Manual

1. In bypass mode, the touch panel shows the following screen and the tri-color LED
indicator illuminates yellow.
2. Single Input: Switch OFF the bypass breaker, input breaker and output breaker.
Dual Input: Switch OFF the bypass breaker, input breaker and output breaker.
3. The UPS will discharge DC bus voltage, and the tri-color LED indicator will illuminate yellow.
After discharging is completed, the UPS will shut down, and the touch panel and the tri-color
LED indicator will be off.
4. Switch OFF every external battery cabinet's breaker.

6.3.4 Manual Bypass Mode Turn-off Procedures

WARNING:
1. For parallel units, ensure that every operation procedure mentioned below is
synchronized to all parallel UPSs.
2. For parallel application, if you just want to operate a specific UPS but not all
parallel ones, please contact Delta service personnel
In manual bypass mode, the touch panel and the tri-color LED indicator are both OFF. In either
single input or dual input, please directly switch OFF the manual bypass breaker to completely
shut down the UPS.
(Figure 6-32: Bypass Mode Screen)
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