Remove the cover that protects the Maintenance Bypass CB from misoperation and the
UPS transfers to Bypass Mode with warning and wait until the LED indicator for bypass
goes green
(b) Close the Maintenance Bypass CB;
(c) Open the CB for output and input and disconnect the battery( For the standard UPS
type , pull out Battery terminal of positive and negative ; for the long run type UPS, open
the battery CB).
3.
Transfer back to Normal Mode
After the maintenance is finished, follow the procedures below to transfer the UPS to
Normal Mode from Maintenance Bypass Mode.
(a) Connect the battery (For the standard UPS type, connect the Battery terminal of
positive and negative; for the long run type UPS, close the battery CB)
(b) Close the CB for Input and Output.
(c) Open the CB for Maintenance Bypass and install the cover.
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