Delta DPS-400K - Manual Bypass Mode Start-Up Procedures (Parallel)

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7
UPS Operation
BYPA.
MAIN
2010 - 06 - 01
11 : 59 : 59
UNIT : #1.1
LOAD UNPROTECTED
ON AUTO BYPASS
TO BROWSE EVENT
(004)
PRESS
3
After you complete the bypass mode start-up procedures, each unit’s LEDs illuminate
as follows.
Fault
7.2.4 Manual Bypass Mode Start-up Procedures (Parallel)
WARNING:
1. Please note that you can only turn on the Manual Bypass Switch (Q3) when
the UPS needs maintenance. This ensures that the supply of power to the
critical loads will continue. If you turn on the Manual Bypass Switch (Q3) during
normal mode, the inverter will shut down, the UPS will transfer from normal
mode to manual bypass mode, and the output won’t be protected.
2. In manual bypass mode, the manual bypass supplies power to the critical loads
and maintenance personnel can perform maintenance without interrupting the
power supply to the loads.
3. When the UPS is in manual bypass mode, there is no high voltage inside the
UPS except the wiring terminal block and the Manual Bypass Switch (Q3). Do
not touch the wiring terminal.
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From Normal Mode to Manual Bypass Mode (Parallel)
1
Press the OFF button of one of the parallel UPSs for three to ten seconds and
release it after you hear one beep. The LCD shows the message: ‘SHUTDOWN
UPS?’. Select ‘YES’ and press the function key below the symbol ‘
¶WRFRQ¿UP
your selection.