Mbs Operation - Toshiba G9000 SERIES Installation And Operation Manual

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MBS Operation

Begin this procedure only with the system in the normal operating mode (UPS On-Line)
1. Touch the "Start/Stop" button on the MAIN screen on the UPS Cabinet. Touch and Hold the "Stop"
button until it beeps (this will transfer the UPS to static bypass.) If SKRU in MBS is equipped with a light,
it should now be illuminated, and the key can be removed.
2. Extract the key from the SKRU.
3. Insert the key in the lock on MBB, and unlock MBB.
4. Close MBB (Maintenance Bypass Breaker)
5. Open MIB (UPS Output Isolation Breaker)
6. Lock MIB. Remove the key from the lock on MIB, and insert it in the SKRU.
7. Turn off all DC breakers.
8. At this time, UIB (UPS Input Breaker) may now be opened. Any input isolation breakers to the
rectifier input of the UPS must now be opened to isolate the UPS completely.
9. End of Procedure.
System is now on External Maintenance Bypass
This procedure is for the system in the maintenance bypass-operating mode (System is on External
Maintenance Bypass)
1. Close UIB (UPS Input Breaker) and close input isolation breakers to the UPS.
2. Wait until the UPS turns ON.
3. Turn ON all DC breakers.
4. Verify that the UPS is in Bypass via the mimic panel.
5. Verify that the Bypass and Inverter LED's are on. If so, the key in the SKRU can now be removed.
6. Extract the key from the SKRU. Insert it in the lock on MIB, and unlock MIB.
7. Close MIB (UPS Output Isolation Breaker)
8. Open MBB (Maintenance Bypass Breaker)
9. Lock MBB. Remove key from MBB, and insert it in SKRU.
10. Touch the "Start/Stop" button on the MAIN screen. Touch and hold the "Start" button until it beeps
(this will transfer the UPS to inverter operation.)
11. End of Procedure.
System is now being supported by the UPS.
G9000 Slim MBS Installation and Operation Manual – 96011-000
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