Dale Power Solutions Ltd
User Manual
22
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In bypass mode the Inverter LED is off and the Bypass LED is on.
ECO mode
If specified, your UPS may be set to operate in ECO mode instead of on-line mode. In ECO mode the
load is supplied via the bypass circuit and not the inverter, allowing the UPS to work at higher efficiency.
The battery is trickle charged in this mode. If the a.c. input is lost or goes beyond its normal range the
UPS automatically switches to battery mode, however, the transfer speed is slower than on-line mode
and may not be suitable for all applications.
Frequency converter mode
The UPS can be programmed to work as a frequency converter to provide either a 50 or 60 HZ a.c.
output voltage. In this mode static bypass operation is disabled and the UPS may operate in battery
mode.
Before switch on
Before turning on the unit for the first time or after any wiring or battery changes:
1. Read the section above on working modes.
2. Check all the wiring.
3. Check that the rated load does not exceed the rated output of the UPS.
4. If the UPS is supplied by a generator, check that the generator is correctly rated and wired (see
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on page 11).
5. Apply the wheel locks and screw down the feet to prevent the UPS from moving.
Switching on the UPS
Note:
It is important to switch on your UPS as described below as damage may occur when supplying
certain load types.
Caution:
When using the UPS for the first time, charge the batteries for at least 8 hours as
they may have lost charge during the time between production and installation.
To switch on the UPS:
1. Ensure all UPS breakers are switched off.
2. Switch on the battery breaker.
3. Switch on the distribution breaker (including a split supply breaker if this is in use).
4. Switch on the UPS bypass and output breakers. The Bypass and Output LEDs are illuminated. You
should immediately hear the fans start up
The LCD should begin to work. The model number and working mode is initially displayed on the front
panel LCD. After a few seconds this changes to system information.
