7. Set the UPS SYSTEM ENABLE switch to the OFF position.

8. Set the Q2 switch to the OFF position.

9. Set the Q1 switch to the OFF position.

10. Set the Q5 breaker to the OFF position (if applicable).

11. Verify that the maintenance bypass switch

(Q3) is in the OFF position.

12. Set the DC DISCONNECT switch on all of

XR Battery Enclosures/PDU-XR

the XR Battery Enclosures and the PDU-XR

 

(if applicable) and on the main frame (only for

 

PX48) to the OFF position.

 

13.Disconnect all battery units by removing them or pulling them out to the red disconnect line.

Caution: To ensure that the enclosure does not tip, do not pull out the battery units beyond the red disconnect line. If you intend to completely remove the battery units, remove them from the enclosure one at a time. Failure to pull battery units out to the red disconnect line could cause deep discharge/damage to the batteries.

14.Set the upstream mains power to the OFF or

LOCKED OUT position. If the UPS has a dual mains supply, set both supplies to the OFF or LOCKED OUT position.

15.Measure bypass/output DC and mains to ensure that the system is completely powered off.

990–3015E-001

Symmetra™ PX48, 96, and 160 kW 400 V 100 kW 208 V Operation

9