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Operation – Operation Procedures
16 Smart-UPS® VT ISX 20-30 kVA, 208/220/480V Operation
Turn into normal operation (from mechanical bypass operation)
Verify the presence of utility supply.
UPS will start up and perform self test (see Restart Procedure).
Ensure no alarm messages appear in the display and select “YES” when “Apply load” appears in the
display. The UPS will automatically turn into static bypass.
Verify UPS is in static bypass. Green and yellow LEDs are ON.
Turn the Mechanical Bypass Lever downwards into horizontal position.
Close the front door.
Verify UPS is in normal operation. Yellow LED turns OFF and green LED remains ON.
Caution
Never attempt to switch back the UPS into normal operation till you have verified that
there are no internal UPS faults. If in doubt, always call APC Customer Support (see
rear cover of this manual) before returning to normal operation.