Manual Bypass Operation - Delta Ultron HPH Series User Manual

WARNING:
You can remove the UPS only after the screen on the LCD is off, the fans stop run-
ning, the utility AC power is shut off and the batteries are removed.
7.4

Manual Bypass Operation

WARNING:
1. Please note that the cover plate of the manual bypass switch can be opened
2. When the manual bypass switch is turned on, it will be manual bypass to supply
3. When the UPS runs in manual bypass mode, there is no high voltage inside the
From Normal Mode to Manual Bypass Mode:
1. In online mode, press the OFF key (
screen. Press the DOWN key (
down, the buzzer will sound once, and the system will transfer to bypass mode. At this
time, the BYPASS LED indicator (
2. Open the cover plate of the manual bypass switch, turn the manual bypass switch to
the 'BYPASS' position, and turn off the main input breaker and the bypass input break-
er. Now, all LED indicators are off.
and the manual bypass switch can be turned on only when the UPS needs main-
tenance. This ensures that the supply of power to the connected critical loads
will continue. If the cover plate of the manual bypass switch is opened and the
manual bypass switch is turned on in online mode, the inverter will shut down!
switch and turn on the manual bypass switch.
power to the connected critical loads and the output won't be protected by the
UPS.
UPS except the wiring terminal block, the manual bypass switch and the batter-
ies. Do not touch the wiring terminal block, the manual bypass switch and the
batteries to avoid electric shock.
?
) once and the LCD shows the following
OFF
)
) illuminates (yellow).
BYPASS
?
47
Chapter 7 Operation