HP PowerWise L600/L900/L1250 Operating Sequences

Normal operation

Normal operation on AC power is indicated by the Green light next to the sine wave symbol.

Battery backup mode

In case of an AC power failure the yellow indicator blinks (battery with +- symbols) and the audible alarm sounds every 15 seconds. Battery operation continues to supply power to the load. At approx. 20% of the remaining back-up time, the beep rate of the audible alarm and blinking rate of the yellow indicator will increase:

When this happens, you should save all open files and applications:

• When the batteries are discharged, the unit shuts down automatically, the lights are extinguished, the audible alarm is silenced and the loads are no longer powered.
• When AC power comes back the unit will restart automatically

The system is in overload when the case the power requirement of the load is greater then the rated output of the HP PowerWise L600/L900/L1250

Here's what to expect in an overload condition.

If AC power is available, the red indicator lights next to the balance symbol and the audible alarm sounds.

• For overloads exceeding 105% the unit will shut down 5 minutes later.
• In case of a short circuit, the input fuse or thermal breaker will clear (operate?).
• Switch the HP PowerWise L600/L900/L1250 "OFF", correct the problem that caused the overload and restart the unit.

• The HP Power Wise L600/L900/L1250 is protected by electronic overload detection circuit and will shut down faster with higher overload.
• Switch the unit "OFF", correct the problem that caused the overload and restart again.

If the red equipment problem indicator is lit (next to the triangle with exclamation point) and the audible alarm sounds:

• Switch the HP PowerWise L600/L900/L1250 "OFF" unplug the AC Input cord and check for a short circuit (disconnect all loads).
• Check the input fuse and if blown (opened) replace it with another one (use same rating as shown on back panel) or reset the thermal breaker.
• Reconnect the AC input cord to the AC outlet and switch the unit "ON".
• If a fault condition still exists contact your dealer or nearest authorized maintenance center.
• If the HP PowerWise L600/L900/L1250 is "ON" and if the audible alarm sounds continuously, check the AC input voltage and frequency range.
• If the AC input is within range and the unit is not in normal operation (see "getting started" section) contact your dealer or nearest authorized maintenance center.
• If the yellow replace battery light (battery with an X on it) flashes after turn-on or when test switch has been depressed this indicates that the batteries are weak and your load may not be sufficiently protected in case of an AC power failure. Contact your dealer or nearest authorized maintenance center.