Switch The Ups From Maintenance Bypass To Online; Restore System Power After An Epo Shutdown - Toshiba 5000 SERIES Installation And Operation Manual

DO NOT physically place the UPS in Maintenance Bypass with the rotary Maintenance
Bypass Switch until the touchscreen indicates the unit is in BYPASS Mode.
4. If an external Battery Cabinet is attached, switch the battery cabinet MCCB to "OFF"
5. Rotate the large red Bypass switch clockwise to the "BYPASS" position.
6. Switch (swing the interlock lever to the up position, see Section 7.1, #11) the UPS MCCB to "OFF".
The unit is now in the Maintenance Bypass mode and may be serviced. For units with
internal transformers, the transformers are still energized.
7. Secure the weather-tight doors on the Maintenance Byapss and the touchscreen display.
13.5

Switch the UPS from Maintenance Bypass to Online

To switch the UPS to from Maintenance Bypass to Online,
1. Open the weather-tight doors to the MBS and the Touchscreen.
2. Switch (swing the interlock lever to the down position, see Section 7.1, #11) the UPS main power
switch, MCCB, to "ON".
3. Wait until:
• The System Mode message (left side of the message screen footer) indicates the UPS in
"BYPASS" mode
• The System Status message (right side of the message screen footer) indicates the UPS is in
"BYP" mode.
• The A/C Input LED is "ON" (steady Green), and the "ONLINE/FAULT" LED is off
4. If an external Battery Cabinet is attached, switch the battery cabinet MCCB to "ON"
5. Slowly rotate the large red Bypass switch clockwise to the "UPS MODE" position.
6. Press the "RUN" icon on the touchscreen MAIN display. This sets the UPS in "On-Line" Mode. Verify
the System Mode message (left side of the message screen footer changed from "STARTUP" to "ON-
LINE".
7. Secure the weather-tight doors on the Maintenance Byapss and the touchscreen display.
13.6

Restore System Power after an EPO Shutdown

After shutting down the UPS by pressing the EPO switch, restore system power as follows:
1.
Ensure the cause of the EPO action has been resolved.
2.
Reset the UPS main circuit breaker MCCB, located behind the UPS front door, by first switching the
breaker OFF, then ON.
3. Reset the Battery Cabinet (if any) circuit breaker(s) by first switching the breaker OFF, then ON.
4. Continue the startup procedure as given in Section 13.2.
5000 Series NEMA-3R 3-Phase UPS Installation and Operation Manual – 92975-000
73