Delta Modulon DPH series User Manual page 242

UPS
1. UPS Cleaning:
openings and replace the filters regularly to prevent any object from blocking or covering
these areas.
2. UPS Regular Inspection:
b. Regularly check the UPS every half year and inspect:
1) Whether the UPS, LED indicators, and alarm function are operating normally.
2) Whether the UPS works in bypass mode (normally, the UPS works in normal mode). If
yes, check if any error, overload, internal fault, etc. occurs.
root cause.
Batteries
The DPH series UPS uses the sealed lead-acid batteries or the lithium-ion batteries. The battery
life depends on the temperature, the usage, and the charging/ discharging frequency. High
temperature environments and high charging/ discharging frequency will quickly shorten the
battery life. Please follow the suggestions below to ensure a normal battery lifetime.
1. Keep usage temperature between 15°C~25°C (59°F~77°F).
2. When the UPS needs to be stored for an extended period of time, the sealed lead-acid
batteries must be recharged once every three months and the charging time must not be less
than 24 hours each time. As for the lithium-ion batteries, please contact your battery supplier
for the charging frequency and charging duration.
Fans
Higher temperatures shorten fan life. When the UPS is running, please check if all of the fans
work normally and make sure if the ventilation air can move freely around and through the UPS.
If not, replace the fans.
NOTE:
Please ask your local dealer or customer service for more maintenance information. Do
not perform maintenance if you are not trained for it.
Modulon DPH Series
9-2