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3.2 System Preparation (Pre-Power)
Before connecting the UPS to a power source; move the Circuit Breakers (ON/OFF), on the front
panel, to the OFF position and move the operation STOP/RUN key switch, on the front panel, to
the STOP position.
3.3 Operating Precautions
1) The UPS should not be powered up until the entire User’s Manual has been reviewed, and
understood.
2) The input power source voltage must be within +10% to -15% of the rated input voltage to
initially start the UPS. The input frequency must be within the rated input frequency range.
Voltages and frequencies outside of the permissible range may cause internal protection
devices to activate.
3) The UPS should not be used with a load whose rated input is greater than the rated UPS
output.
4) Do not use the UPS to provide power to motors that require high starting current or a long
starting time such as vacuum cleaners and machine tools.
5) Do not insert metal objects or combustible materials in the unit's ventilation slots.
6) Do not place, hang, or paste any objects on the top or on the exterior surfaces of the UPS.
7) The capacitors of the UPS maintain a residual charge for a while after turning off the UPS.
The required discharge time for each UPS typeform is provided via a cabinet label and a
CHARGE LED. Wait for at least the minimum time indicated on the label and ensure that the
CHARGE LED has gone out before removing the front panel of the UPS once the UPS
power has been turned off.
8) Do not attempt to disassemble, modify, or repair the UPS. Call TOSHIBA Service for repair
information.
9) Turn the power on only after attaching ALL the covers and DO NOT remove any covers of
the UPS when the power is on.
10) If the UPS should emit smoke or an unusual odor or sound, turn the power off immediately.
11) The heat sink and other components may become extremely hot to the touch. Allow the unit
to cool before coming into contact with these items.
12) Warning signs should be placed on or near the load to let people know that the load is being
powered by the UPS.
4200FA CT/XT User’s Manual 19