L10US-IB20, L10US-IB40, L10US-IB60 L10US-IB00, L15US-IB40, L15US-IB60 L15US-
IB00, L20US-IB60, L20US-IB00 UPS
1. Turn ON OUTPUT breaker.
2. Turn ON BYPASS breaker.
3. Turn ON MAINS breaker.
The UPS powers from the static bypass instead of the maintenance bypass, then the bypass
LED will light up.
• Switch OFF the maintenance bypass breaker, then the output is supplied by the static
bypass of the UPS.
• Put on the maintenance switch cover.
The rectifier will operate normally after 30 seconds. If the inverter works normally, the system
will be transferred from bypass mode to normal mode.
4.2.6. Cold start procedure
Follow these procedures when the input AC Utility Failure, but battery is normal
• The model is connected to the battery docking terminal. (If the Battery Breaker or Battery
docking terminal is turned on, the battery will feed the Auxiliary power board.)
• Set the Battery Breaker to the “ON” for long run UPS.
• Refer to the important safety instructions for standard model in this manual.
• Turn on the OUTPUT breaker.
• Trigger the cold start button. Position 5 in the figure below.
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