KEHUA TECH MR33 Series, User Manual, Page: 104 / 123

MR33 Series (75K-600K) Modular UPS
User Manual 5 Use and Operation
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Step 4 Disconnect OUTPUT switch, after the touch screen, LED indicators are all off, the maintenance can
be done.
During maintenance, it is strictly forbidden to close the OUTPUT switch.
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5.3.6 Switch to Inverter Power Supply from Maintenance Bypass
Before perform the operation of switching to inverter power supply from maintenance bypass, please
ensure that the system bypass input is normal.
Step 1 Close the BYPASS switch
→
POWER switch
→
external battery breaker
→
OUTPUT switch
successively.
Step 2 After the power supply normal and the energy flow on touch screen shows bypass output, place the
MAINTENANCE switch to OFF. At this time, the bypass supply power for load.
Step 3 Start the inverter system.
When the green indicator of all power module slow flicker, click icon in main page to enter
ON/OFF page, click ON and then click OK icon to start the inverter. The UPS turns to inverter
output.
The inverter also can be started by ON combination button on the panel, generally, it is not suggested
to operate like this.
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