Manual Bypass Mode Start-Up Procedures - Delta Ultron Series User Manual

6.2.4

Manual Bypass Mode Start-up Procedures

WARNING:
1. Before turning on/ off the UPS, please read 6.1 Pre Start-up & Pre Turn-off
Warnings thoroughly and ensure that the precautions and instructions have
been followed.
2. To enable Manual Bypass mode, please contact Delta customer service for
operation.
3. In Manual Bypass Mode, make sure that all of the switches/ breakers (except
for the Manual Bypass Switch (Q3)) are in the OFF position before working on
the UPS's internal circuit to prevent electric shock.
From On-Line Mode to Manual Bypass Mode
•
Step 1
Tap the ON/ OFF Button (
Step 2
Ensure that the UPS runs in Bypass mode. After confirmation, turn ON the Manual Bypass
Switch (Q3).
Step 3
Switch OFF the Input Switch (Q1) and Bypass Switch (Q2). After that, the LCD screen shows
as follows.
Step 4
Wait for the UPS to complete DC BUS discharging. After discharging, switch OFF every
external battery cabinet's breaker (Q5), and the LCD and tri-color LED indicator will be off.
Step 5
Switch OFF the Output Switch (Q4).
) on the LCD screen to shut down the inverter.
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