Dale Power Solutions Ltd
User Manual
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19
Maintenance
E200 series units use sealed lead acid, maintenance free batteries and require minimum maintenance in
general. To keep the batteries fully charged and in good condition, ensure the UPS is plugged into the
mains at all times. The UPS battery charger guards against over-charging and deep discharge.
Fan
At normal room ambient temperature the fans will operate continuously for 20,000 to 40,000 hours.
Increased ambient temperatures will shorten this lifetime.
Periodically ensure that there is air is blowing out of the rear of the unit.
Battery
For units with external batteries we recommend the use of sealed lead acid, maintenance free batteries.
Units with internal batteries are fitted with this same type of battery. Battery life depends on the ambient
temperature and the number of discharge/charge cycles. Battery life is shortened with high ambient
temperature and deep discharges.
To maximise the life of your batteries, maintain them as follows:
■ Maintain the ambient temperature in the range 15 to 25°C
■ Avoid discharge currents of less than 10% of full load current.
■ Do not operate the UPS in battery mode continuously for more than the specified autonomy (hold-up
time).
■ Charge the battery for at least 12 hours every 3 months if it has not been used. If the ambient
temperature is higher than 25°C, charge the battery every 2 months.
■ Maintain external batteries at least once a year.
If the backup time has significantly reduced, or a battery fault is displayed on the LCD screen contact your
distributor to find out if the batteries need replacing.
WARNING
DON'T SHORT CIRCUIT THE BATTERY AS IT CAN CAUSE A FIRE.
DON’T OPEN THE BATTERY AS THE ELECTROLYTE INSIDE IS HARMFUL TO SKIN AND
EYES.
External battery change
Caution:
We strongly recommend you switch off the whole UPS when you need to change an
external battery group.
Visual check
Ensure there is adequate ventilation to maintain the UPS at the correct temperature.
UPS status check
Check the following:
■ Ensure there are no faults or alarms indicated.
■ If the UPS is working in bypass mode, investigate the cause.
■ If the UPS is working in battery mode, make sure it is normal, if not, investigate.
