
Xtreme Power Conversion Corporaon
P91c-1000 User’s Manual
Page 4
Uninterrupble Power Supply
Maintenance, service and faults
• The UPS system operates with hazardous voltages. Repairs may be carried out only by qualied
maintenance personnel.
• Cauon -risk of electric shock. Even aer the unit is disconnected from the mains (building wiring
outlet), components inside the UPS system are sll connected to the baery and electrically live
and dangerous.
• Before carrying out any kind of service or maintenance, disconnect the baeries and verify that
no current is present and no hazardous voltage exists in the terminals of high capability
capacitor such as BUS-capacitors.
• Only people that are adequately familiar with baeries and with the required precauonary mea-
sures may replace baeries and supervise operaons. Unauthorized personnel must be kept
well away from the baeries.
• Cauon -risk of electric shock. The baery circuit is not isolated from the input voltage.
• Hazardous voltages may occur between the baery terminals and the ground. Before touching,
please verify that no voltage is present!
• Baeries may cause electric shock and have a high short-circuit current. Please take the precauon-
ary measures specied below and any other measures necessary when working with
baeries:
a) Remove wristwatches, rings and other metal objects
b) Use only tools with insulated grips and handles.
c) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of baeries.
e) Disconnect charging source and load prior to installing or maintaining the baery.
• When changing baeries, install the same number and same type of baeries.
• Do not aempt to dispose of baeries by burning them. This could cause baery explosion.
• Do not open or destroy baeries. Escaping electrolyte can cause injury to the skin and eyes. It
may be toxic.
• Please replace the fuse only with the same type and amperage in order to avoid re hazards.
• Do not dismantle the UPS system.
• NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protecon against harmful interference when the equipment is operated in acommercial environ-
ment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instrucon manual, may cause harmful interference to radio com-
municaons. Operaon of this equipment in a residenal area is likely to cause harmful interfer-
ence in which case the user will be required to correct the interference at his own expense.
• WARNING: Changes or modicaons not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate the equipment.
Setup the UPS
Step 1: UPS input connecon
Plug the UPS into a two-pole, three-wire, grounded receptacle only. Avoid using extension cords. The
power cord is aached to the UPS. The input plug is a NEMA 5-15P.
Step 2: UPS output connecon
There are two kinds of output receptacles: programmable outlets and general outlet. Please connect
non-crical devices to the programmable outlets and crical devices to the general outlets. During
power failure, you may extend the backup me to crical devices by seng shorter backup me for
non-crical devices.