©2021 Lowell Manufacturing Co. UPS9A Series (X-Rev 8/13/20)
1-4. Operation
l Do not disconnect the mains cable on the UPS system or the building wiring outlet (shockproof socket
outlet) during operations since this would cancel the protective earthing of the UPS system and of all
connected loads.
l The UPS system features its own, internal current source (batteries). The UPS output sockets or output
terminals block may be electrically live even if the UPS system is not connected to the building wiring
outlet.
l In order to fully disconnect the UPS system, first press the OFF/Enter button to turn off the unit.
l Prevent fluids or other foreign objects from inside of the UPS system.
l The EPO and USB circuits are an IEC 60950-1 safety extra low voltage (SELV) circuit. This circuit must be
separated from any hazardous voltage circuits by reinforced insulation.
1-5. Maintenance, service and faults
l The UPS system operates with hazardous voltages. Repairs may be carried out only by qualified
maintenance personnel.
l Caution - risk of electric shock. Even after the unit is disconnected from the mains (building wiring outlet),
components inside the UPS system are still connected to the battery and electrically live and dangerous.
l Before carrying out any kind of service and/or maintenance, disconnect the batteries and verify that no
current is present and no hazardous voltage exists in the terminals of high capability capacitor such as
BUS-capacitors.
l To avoid electrical shock, turn off the unit and unplug it from the AC power source before servicing the
battery
l Only persons adequately familiar with batteries and with the required precautionary measures may
replace batteries and supervise operations. Unauthorized persons must be kept well away from the
batteries.
l Caution - risk of electric shock. The battery circuit is not isolated from the input voltage. Hazardous
voltages may occur between the battery terminals and the ground. Before touching, please verify that no
voltage is present!
l Caution - Do not dispose of batteries in a fire. The batteries may explode.
l Caution - Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes. It may
be toxic.
l A battery can may cause a risk of electrical shock and high short-circuit current. The following precautions
should be observed when working on batteries:
a) Remove watches, rings, or other metal objects.
b) Use tools with insulated handles.
c) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of batteries.
e) Disconnect charging source prior to connecting or disconnecting battery terminals.
f) Determine if battery is inadvertently grounded. If inadvertently grounded, remove source from ground.
Contact with any part of a grounded battery can result in electrical shock. The likelihood of such shock
can be reduced if such grounds are removed during installation and maintenance.
