Delta Modulon DPH series, User Manual

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3 - 5
3 Operation Modes
When the UPS needs maintenance, you can manually switch the UPS to Manual Bypass
mode. To let the UPS run in Manual Bypass mode, please follow the procedures below:
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2
Tap the LCD’s ON/ OFF Button ( ) and the ' POWER OFF? ' screen will pop up to
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' YES '.
3
Turn ON the Manual Bypass Breaker (Q3).
4
Turn OFF the Bypass Breaker (Q2).
5
Turn OFF the Input Breaker (Q1) and Output Breaker (Q4).
6
Turn OFF each external battery cabinet’s breaker (Q5).
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personnel can perform maintenance safely. Please see Figure 3-4 for Manual Bypass
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MAIN LOAD
Q1
Q2
Q4
Q3
Batteries
Rectifier Inverter
Static Switch
Q5
(Figure 3-4: Manual Bypass Mode Diagram_ Single Input Single Unit)