Mitsubishi Electric 9900D Series Owner Technical Manual page 54

!
When "REMOTE OPERATION MODE" is displayed on the LCD panel, the
inverter start operation can only be performed remotely. If local inverter stop
operation is required (at the UPS), select "LOCAL ONLY" or "REMOTE &
LOCAL" in the OPERATION MENU.
NOTE
d.) Open the Battery Disconnect circuit breaker(user supplied) manually.
Verify the load is OFF if the next step is to be performed .
WARNING
!
Power to the critical load is supplied through the bypass line. Power to the
critical load will be lost after execution of the next step. The load will drop.
NOTE
e.) If a dual source is feeding the UPS, open the External AC Input Circuit Breaker (user
supplied) manually.
f.) If turning off all power to the critical load is desired, open the External Bypass Input
Circuit Breaker (user supplied) manually.
In bypass mode, all UPS power terminals are still live. Lethal voltages are
present. De-energize all external sources of AC and DC power. Before
removing the covers, wait 5 minutes after de-energizing. Check no-voltage
before handling UPS. Be careful for the devices even when the UPS has been
WARNING
de-energized, still internal devices may be
C) Bypass Operation Procedure
** Transfer from Inverter to Bypass
1. Check for "SYNC" on the LCD.
2. Press the "TRANSFER" icon on the LCD.
3. Press the "TRANSFER TO BYPASS (SMS)" icon on the LCD.
9900D SERIES UPS
OWNERS / TECHNICAL MANUAL
MITSUBISHI ELECTRIC 9900D SERIES UPS
Page Number:
4-2
hot.