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OPM_GTU_19X_1K0_3K0_XUS_V014
12
GT-UL Series: User manual 1.2 (US)
Digital Energ
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GT Serie
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3.3.4 Silencing the buzzer
When the UPS is in ‘ON BATTERY’ mode the buzzer can be turned on or off by
pressing the ‘I/TEST’-button (1).
3.3.5 Switching off
1 To switch off the UPS push the OFF-button (2) until a short beep is heard. Release
the button after the beep. After a few seconds the UPS will be in ‘STANDBY’ mode:
it will continue keeping the batteries charged. See also fig. 2.5.
2 To fully turn off the UPS, and/or if electric isolation is required, unplug the power
cord of the UPS from the wall outlet.
3.4 Use: Abnormal Conditions
3.4.1 On battery
In case of a utility power failure the UPS
will use the energy stored in the battery to
supply the load.
The LED ‘On Battery’ will light and the
buzzer beeps with a 2 seconds interval.
When the utility power returns, the UPS
will switch back to normal operation. In
case of a long power failure the UPS will
stop operating when the batteries have
been depleted (see Chapter 8 - Battery -
Back-up Time).
3.4.2 Battery low
The batteries are nearly discharged during
battery operation (see 3.4.1).
The LED ‘On Battery’ and the ‘Battery Low’
LED will light and the buzzer beeps with a
1.5 seconds interval, Controlled shutdown
of any computer equipment is absolutely
necessary at this point
3.4.3 Overload
The demanded power exceeds the normal
capacity of the UPS.
The Overload LED will light and the buzzer
sounds continuously.
You are advised to unplug some load as
soon as possible. If an overload condition
persists, the UPS may eventually switch to
bypass operation. If this is not possible
(UPS was operating on battery during
utility failure, bypass is not available) the
UPS output power may be lost.
Fig. 3.6 On batter
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Fig. 3.7 Battery lo
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Fig. 3.8 Overloa
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