Operation
W A R N I N G
:If the input frequency is not correct and the UPS is not synchronized to utility power (LINE ON indicator is off), the use of the Maintenance Bypass switch causes a break in the output voltage. Wait until the LINE ON indicator illuminates before using the switch.
:Do not use the Maintenance Bypass switch if the UPS is configured as a frequency converter (50 Hz in/60 Hz out or 60 Hz in/50 Hz out); it could cause damage to the load.
To operate the Maintenance Bypass switch:
1.Check to ensure the LINE ON indicator is on.
2.Turn the Maintenance Bypass switch through the SERVICE position to the BYPASS position. The UPS is now bypassed, with the load powered from utility.
To return to Normal Mode:
1.Turn the Maintenance Bypass switch to the SERVICE position.
2.Turn on the UPS ON/OFF switch (the position). If the switch is already in this position, turn it off and then on again.
C A U T I O N
Before turning the Maintenance Bypass switch to the UPS position, verify that the UPS ON, LINE ON, and LOAD indicators are on. This may take three to four minutes.
3.Turn the Maintenance Bypass switch to the UPS position to return to Normal Mode. The UPS is powering the load.
Powerware® 9150 User’s Guide : www.powerware.com | 45 |