Delta Modulon DPH 200kVA, User Manual, Page: 214 / 232

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Modulon DPH Series
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UPS
1. UPS Cleaning:
Regularly clean the UPS, especially the slits, openings and filters, to ensure that the air freely
flows into the UPS to avoid overheating. If necessary, use an air-gun to clean the slits and
openings and replace the filters regularly to prevent any object from blocking or covering these
areas.
2. UPS Regular Inspection:
a. Monthly check the filters and yearly replace them.
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 will work in normal mode).
If yes, check if any error, overload, internal fault, etc. occurs.
3) Whether battery voltage is normal. If the battery voltage is too high or too low, find the
root cause.
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Batteries
The DPH series UPS uses sealed lead-acid 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.
2. When the UPS needs to be stored for an extended period of time, the batteries must be
recharged once every three months and the charging time must not be less than 24 hours
each time.
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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.
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Please ask your local dealer or customer service for more maintenance
information. Do not perform maintenance if you are not trained for it.