1 Safety DescriptionN1C L-Series(1-3kVA) UPSUser Manual6 Even if all external power are disconnected, there still exists residual charge inside UPS, whichmay endanger human life. It is necessary to set UPS aside for enough time (≥10 min) to releaseall charge before dismantling UPS. As the battery doesn't isolate with AC input, there may exist dangerous voltage between batteryterminal and ground terminal. The battery pack should be insulated when installing or using it forhigh voltage hazard concern. Do not wear conductive objects, such as watches, bracelets and rings during operation. The installer should have the operation qualification of high voltage and AC power. Maintenanceand repair for power system only can be done by qualified persons. High leakage risk! Before performing electrical connection, device must be grounded.Don't drill holes in the device! Inappropriate drilling will damage components inside device. Metaldebris generated by drilling entering device will lead to circuit board short circuit.Any change of system configuration, structure or components will affect UPS performance. If the userwants to make any change, please consult manufacturer in advance.1.3 Operation Environment RequirementsOperation environment makes a certain difference in the life span and reliability of device. So, pleaseavoid using the device in following environment: The place where the operating temperature and relative humidity are beyond technicalspecifications (Generally, the operating temperature is -5℃~40℃ and the relative humidity is0%-95%). The place where it is exposed to direct sunshine or in rain. The place where it is with vibration or impact. The place where it is dust, corrosive material, salt or burnable gas. The place where it is in the poor ventilation or closed place.