DPD-9E2305
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6.7 Setting high efficiency mode
In High Efficiency mode, the UPS operates normally on Bypass and transfers to Online (or Battery) mode in less than ten
ms when utility fails. Transfers to High Efficiency mode will be active after five minutes of Bypass voltage monitoring: if
Bypass quality is not in tolerance, then the UPS will remain in Online mode.
Eaton recommends to use the HE mode only to protect IT equipment.
To set the High Efficiency mode:
Select Settings, In/Out settings, and High Efficiency mode.
Select Enabled and Enter to confirm.
The UPS transfers to High Efficiency mode after five minutes.
7 UPS maintenance
7.1 Equipment care
For the best preventive maintenance, keep the area around the equipment clean and dust free. If the atmosphere is very
dusty, clean the outside of the system with a vacuum cleaner.
For full battery life, keep the equipment at an ambient temperature of 25 °C (77 °F).
The batteries are rated for a 3-5 year service life. The length of service life varies, depending on the frequency of usage
and ambient temperature (life divided by 2 each 10 °C above 25 °C).
If the UPS requires any type of transportation, verify that the UPS is turned off.
Batteries used beyond expected service life will often have severely reduced runtimes. Replace batteries at least every 4
years to keep units running at peak performance.
Batteries runtime will be reduced at low temperature (below 10 °C).
7.2 Storing the equipment
If you store the equipment for a long period, recharge the battery every 6 months by connecting the UPS to utility power.
The internal batteries charge to 90% capacity in less than 3 hours. However, Eaton recommends that the batteries charge
for 48 hours after long-term storage.
Check the battery recharge date on the shipping carton label. If the date has passed and the batteries were never
recharged, do not use them. Contact your service representative.
7.3 When to replace batteries
Eaton 9E batteries have an expected life span of 3-5 years, after that period you should take proactive steps to ensure
batteries replacement for optimal operation and reliability, contact your service representative to order new batteries.
