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13. MAINTENANCE BYPASS MODE (MBS)
STARTING MAINTENANCE BYPASS MODE:
1-
If UPS setting allows BYPASS mode, proceed to power-off UPS using the procedure explained in section 9. UPS OPERATION &
CONFIGURATION.
Shutdown makes UPS to go to internal STATIC-BYPASS Mode. UPS output will connect to Bypass input by means of static bypass line.
2-
When screen confirms UPS entered internal Bypass Mode, remove safety plate of MBS switch.
3-
Move "MBS" switch from UPS position to MBS position.
4-
At this moment, UPS output is connected to Bypass input using static Bypass line.
5-
Open UPS AC Input switch and wait until screen turns off. Now, UPS is disconnected from AC Input Line.
6-
Open DC switches of ALL external battery packs.
If UPS has no internal batteries, it is isolated from all power sources.
If UPS has internal batteries, internal DC circuits are still powered. Technician must take precautions to disconnect internal batteries in
case an UPS intervention is required.
IMPORTANT WARNING: Any procedure or intervention must be performed ONLY by qualified personnel.
RETURNING TO OLINE MODE FROM MAINTENANCE BYPASS MODE:
1-
Close the AC Input switch in the UPS.
2-
Feed the UPS, as explained in section 9. UPS OPERATION & CONFIGURATION.
3-
Move MBS switch from "MBS" position to "UPS".
4-
Install back the "MBS" safety plate.
At this point, UPS is in Static-BYPASS mode, and it can be powered-on according to the procedure already described in this manual.
www.xmart-ups.com
USER MANUAL – OPTIMA T10 15K/20K
VER.2311.09 (ENG)
74
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