From Maintenance Bypass to UPS Bypass:
1.Confirm BIBs, if installed, are closed.
2.Transfer UPS to Bypass mode (see UPS Operation manual).
NOTE: For Parallel Redundant systems, transfer both UPS modules to Bypass mode.
3.Depress pushbutton on the Solenoid Key Release Unit (SKRU). Turn and remove key “A”.
4.Insert key “A” into MIS lock, retract bolt, close MIS breaker. Remove key “B”.
CAUTION:
Failure to close MBP breaker results in loss of power to the critical load.
5.Insert key “B” into MBP lock, open MBP breaker, extend bolt. Remove key “A”.
6.Insert key “A” into solenoid and turn key to LOCK position.
7.See UPS Operation manual to place UPS in Normal mode.
WARNING:
Dangerous and potentially lethal voltages are present within the UPS enclosure. When maintenance or repair activities are to be performed, the UPS and the UPS Bypass power sources should be deenergized and verified with a meter before working in the required area.
WARNING:
UPS equipment has power feeds that are derived from two or more power sources.
18 | Powerware 9315 Maintenance Bypass Module |
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| 164201177 Rev. C 041500 | |