P91 Lead Acid 2U User’s Manual
Uninterruptible Power Supply
Xtreme Power Conversion Corporation
Page 2
1-4. Operation
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.
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.
In order to fully disconnect the UPS system, first press the OFF/Enter button to turn off the
unit.
Prevent fluids or other foreign objects from inside of the UPS system.
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
The UPS system operates with hazardous voltages. Repairs may be carried out only by
qualified maintenance personnel.
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.
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.
To avoid electrical shock, turn off the unit and unplug it form the AC power source before
servicing the battery
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.
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!
Caution -
Do not dispose of batteries in a fire. The batteries may explode.
Caution -
Do not open or mutilate batteries. Released electrolyte is harmful to the skin and
eyes. It may be toxic.
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.
