6. Back up test – Unplug inlet power cord or switch off power source to
simulate power failure condition. Green LED indicator will be
dimmed and Amber LED " "," will be light. Intermittent audible
alarm will be heard and LCD display shows as below figure-C:
4.3.2.2 Cold Start (DC start)
1. Ensure the internal battery is available or external battery set well
connected to UPS. Press and hold key for 3 seconds until twice
beeps heard, release button and press for 3 seconds until twice
beeps heard again to confirm cold start procedure. If the 2
nd
button
confirmation not be finished within 10 seconds after 1
st
twice beeps,
UPS will not cold start and shut off after 10 seconds.
2. 5 seconds after cold starting, amber LED" "," will be light,
intermittent audible alarm will be heard and LCD will show sequentially
as below figure-D and figure-E
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