nd 500 VA–3.1 kVA: If you have a battery cabinet that has a DC switch on the front, turn the switch to the OFF position. If your battery cabinet does not have a DC switch on the front, unplug the connector between the battery cabinet(s) and the UPS; be sure to reconnect this connector before you start the UPS again.
4.3–18 kVA: Unlock the lock in the center of the front panel and remove the panel. If there is a DC switch behind the panel, turn it to the OFF position. Reattach the panel to the UPS. If your UPS has separate battery cabinets, turn the DC switch at each battery cabinet to the OFF position.
od If the UPS is turned off for an extended period of time, recharge the batteries every 90–120 days to prevent battery damage. To restart the UPS, see “Startup” on page 17.
Extended Power Outages
If the power is out for an extended time, the UPS continues to provide power for your equipment until it gets near the end of its runtime. You can check the remaining battery runtime by reading parameter 9 (see page 33.) At a preset number of minutes before the end of the runtime (factory-default setting is five minutes), the UPS sounds a Low Runtime alarm (– : :). Shut down your equipment and turn off the UPS to conserve the remaining battery power (see “UPS Shutdown” on
page 35). When AC input power returns, turn on the UPS to recharge the batteries.
If your UPS shuts itself down because its battery voltage is too low, shut down the UPS until the AC input power returns (see “UPS Shutdown” on page 35).
Powerware® FERRUPS FE/QFE UPS (500 VA–18 kVA) User’s Guide : Rev A www.powerware.com | 37 |