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Powerware
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9155 UPS (8–15 kVA) User’s Guide S 164201553 Rev D www.powerware.com
Chapter 12 UPS Maintenance
This section explains how to:
Ī Care for the UPS and batteries
Ī Recycle used batteries
Ī Use the Maintenance Bypass switch
UPS and Battery Care
For the best preventive maintenance, keep the area around the UPS
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 UPS at an ambient temperature of
77°F (25°C).
Storing the UPS and Batteries
When storing the UPS and optional cabinets, the following requirements
should be met:
Ī Verify that the battery circuit breaker is in the OFF position.
Ī Avoid temperature and humidity extremes. To maximize battery life,
the recommended storage temperature is 59°F (15°C) to 77°F (25°C).
Ī If you store the UPS for a long period, recharge the batteries every
10 months by applying utility power. The batteries charge to 80%
capacity in approximately 3 hours. However, it is recommended that
the batteries charge for 48 hours after long-term storage.
Ī Check the battery recharge date on the shipping carton label. If the
date has expired and the batteries were never recharged, do not use
the UPS. Contact your service representative.