Storage & Service - HP T500 Owner's Manual

200402046--HP UPS Owners manual_x2.qxd
Basic Operation
Storage & Service
Storage
All connected equipment should be turned off, then disconnected from the UPS to avoid bat-
tery drain. Unplug your UPS from its AC receptacle, then press and hold its ON/OFF button to
deactivate it. Your UPS is now ready for storage. If you plan on storing your UPS for an extend-
ed period of time, fully recharge the UPS batteries once every three months by plugging the
UPS into a live AC outlet and letting the UPS charge for 4 to 6 hours. If you leave your UPS bat-
teries discharged for an extended period of time, they will suffer a permanent loss of capacity.
Service
If returning your UPS for service, contact an HP authorized service representative.
3/11/2004
continued
USB Port: The USB port connects your UPS to any USB workstation or
server. Using this port, your UPS can communicate line-fail and low-bat-
tery status to your computer. Use with HP Power Management software
and USB cable to automatically save open files and shut down equipment
during a blackout. Consult your power protection software manual for
more information.
Battery Replacement Door: Under normal conditions, the original battery
in your UPS will last several years. Battery replacement should be performed
only by qualified service personnel. Refer to "Battery Warnings" in the
Safety section on page 2.
Power Sensitivity/Lowline Adjustment: This dial is normally set fully
counterclockwise, which enables the UPS to protect against waveform dis-
tortions in its AC input. When such distortion occurs, the UPS will nor-
mally switch to providing PWM sinewave power from its battery reserves
for as long as the distortion is present. In some areas with poor utility power
or where the UPS's input power comes from a backup generator, frequent
brownouts and/or chronic waveform distortion could cause the UPS to switch
to battery too often, draining its battery reserves. You may be able to reduce
how often your UPS switches to battery due to waveform distortion or
brownouts by experimenting with different settings for this dial. As the dial is
turned clockwise, the UPS becomes more tolerant of variations in its input
power's AC waveform and reduces the voltage point at which it switches to
battery. NOTE: The further the dial is adjusted clockwise, the greater the
degree of waveform distortion and the lower the input voltage the UPS will
allow to pass to connected equipment. When experimenting with different
settings for this dial, operate connected equipment in a safe test mode so that
the effect on the equipment of any waveform distortions in the UPS's output can
be evaluated without disrupting critical operations. The experiment should last
long enough to assure that all expected line conditions are encountered.
Automatic Voltage Regulation: During brownouts, your UPS will automatical-
ly correct low AC line voltage. When automatic voltage regulation is operating,
your UPS may be heard to click gently. This is a normal, automatic operation
of your UPS, and no action is required on your part.
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