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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-of
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
( ) on the LCD screen to shut down the inverter.
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).
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