Chapter 7 Maintenance
This chapter focuses on the UPS maintenance, including the fan maintenance, battery maintenance, UPS cleaning,
UPS state check, UPS function check
Never maintain the UPS on line. Ensure that the UPS has been completely powered off when performing the UPS
Internal maintenance.
7.1 Fan Maintenance
Before the fan is completely stopped, do not insert your fingers or some tools into the fan so as to avoid device
damage or personal injury.
The UPS fans are expected to run for 20000 hours ~ 40000 hours continuously. The higher the ambient temperature,
the shorter the fan life is.
During the UPS operation, please verify the fan status once every half year by confirming that air blows out from the
ventilation holes on the rear panel.
7.2 Battery Maintenance
1. Never reverse-connect the battery, otherwise the fire will occur.
2. Never open the battery to prevent physical injury because of the electrolyte. If you accidentally touch the electrolyte,
wash the area immediately with plenty of clean water and go to hospital.
The internal battery module of the UPS is sealed, lead-acid, maintenance-free battery. The battery life depends on the
ambient temperature, charge and discharge times. High ambient temperature and deep discharge shortens the battery
life.
To ensure the battery life, it is required to:
• Keep the ambient temperature ranging from 15°C to 25°C
• Prevent small current discharge. Continuous battery operation time exceeding 24 hours is strictly prohibited
• Charge the battery for at least 12 hours, if the battery hasn't been charged for three months at specified
ambient temperature, or two months at high ambient temperature
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