Tripp Lite SMART1524ET Owner's Manual page 16

Operation
Turn OFF the UPS
3
3.1 Switch OFF the OUTPUT circuit breaker.
Switch OFF the output circuit breaker to interrupt power to connected equipment.
3.2 Switch OFF the BATTERY circuit breaker.
Switch OFF the battery circuit breaker to interrupt battery power connected to the
UPS.
3.3 Switch OFF the INPUT circuit breaker.
Switch OFF the input circuit breaker to interrupt AC line power connected to the
UPS.
All LEDs and the LCD screen will immediately turn OFF.
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