Shut Down the Single UPS with Four Internal Switches into Maintenance Bypass Operation

NOTE: The following is a generic shutdown procedure. All the disconnect devices mentioned may not be present in your specific system.

Generic shutdown procedure for the single UPS system using external maintenance bypass disconnect device Ext. MBB:
1. Make sure MBB is open.
2. Select Control > Operation mode > Transfer to bypass operation if possible.
3. Close Ext. MBB.
4. Open UOB (if present).
5. Open SSIB.
6. Open the battery disconnect device(s).
7. Open UIB.
8. Open MIB and BIB (if present).
Generic shutdown procedure for the single UPS system using maintenance bypass disconnect device MBB (no Ext. MBB present):

NOTE: The following are generic shutdown procedures. All the disconnect devices mentioned may not be present in your specific system.
1. Select Control > Operation mode > Transfer to bypass operation if possible.
2. Close MBB.
3. Open UOB (if present).
4. Open SSIB.
5. Open the battery disconnect device(s).
6. Open UIB.