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Installation and User Manual
Maintenance 4 — 586-174010-00 B00
4.4 Return to the Normal Operation
4.4.1 Return to Normal Single UPS
Figure 4-6: Return to the Normal Operation for Single UPS
1 - Check that bypass switch Q3BP (10) is ON and that all other
switches are OFF.
2 - Set switch Q4S (9) to ON.
3 - Set output switch Q5N (11) to ON.
4 - Wait until the display goes on and check that there are no
faults on the static switch on the bypass line.
5 - Set bypass switch Q3BP (10) to OFF.
6 - Set the input switch Q1 (8) to ON.
7 - Set the battery circuit breaker of auxiliary cabinets to ON.
The UPS starts automatically.
LED (31) is ON.
If LED (31) remains OFF, press the ON button (37) (the UPS is
in manual start mode) and confirm if necessary by pressing the
function key (35) marked .
If LED (31) still remains OFF and either of LEDs (32) or (33) is
ON, a fault has occurred (see Section 4.1).