UPS 300  (260-0251)            Installation           Faxback Doc. # 5747

Remove your UPS 300 from its box and inspect it for shipping damage.
Do not operate the unit if it appears damaged.  Instead, contact your
local Radio Shack store immediately.

The UPS 300 has environmental requirements similar to other computer and
office equipment.  This product is designed for indoor use only, in areas
where it will not be exposed to excessive dust, moisture, or corrosive
fumes.  Be sure there is adequate air flow around the unit.  Do not place
objects on top of, or near, the unit which could obstruct the air
vents.

SAFETY CONSIDERATIONS

WARNING - ELECTRIC SHOCK HAZARD

The UPS 300 has its own power source (battery) and the outlets on the
back can be live even when the UPS 300 is not connected to an AC Power
Source.

This unit contains voltage s that are hazardous.  For safe and reliable
 operation, please observe the following:

1.     Do not attempt to disassemble the UPS 300.  All repairs
       should be performed by trained service personnel.

2.     Do not power the UPS 300 from a receptacle other than
       a two-pole, three-wire ground outlet.

3.     Do not allow water or any foreign object to get inside the
       unit.

4.     To avoid overheating, do not place the UPS 300 in direct
       sunlight or near heat-generating appliances.

5.     This unit was designed and tested for use with equipment
       having a switch-mode power supply such as that used in personal
       computers.  The output waveform is nonindustrial.  Use with
       other appliances could result in overheating or possible safety
       hazard.

INSTALLATION PROCEDURE

1.    Be sure the front panel Output Power switch if OFF.  Plug
      the UPS 300 line cord into a grounded wall outlet.

NOTE:  The UPS 300 is shipped from the factory with the battery fully 
       charged; but it may lose some charge during shipping and storage.
       We recommend that you charge the battery for four hours prior to
       use.  The UPS 300 can be used immediately after unpacking it, but
       it may not provide the fully rated backup time until the battery is
       fully charged.  The battery will charge with the Output Power
       switch in either the ON or OFF position.

2.     Connect the equipment to be protected to the rear panel
       receptacles of the UPS 300.

3.     Turn on the Output Power switch.  After a short delay, the
       Output Power LED (green LED) will come on.  The unit is now
       ready to back up your system.  This LED will be on whenever
       there is voltage present at the output receptacles, whether
       from the AC power line or the inverter.  When operating on
       inverter, this LED will be flashing.  Power is now available
       at the output receptacles.  Turn on all of the connected
       equipment.

4.     You can use the UPS 300 Output Power switch as your 
       system ON/OFF switch.  You do not need to turn OFF
       each piece of equipment individually.

(smc-12/22/93)