Quick Start; Operating The Switch Manually (Local Operation) - ABB OTM C 21D Installation And Operating Instructions Manual

3. Quick start

3.1 Operating the switch manually (local operation)

To operate the switch manually:
1. Attach the handle to the switch panel. You can attach the handle in any position.
2. When the handle is attached, the automatic transfer switch will automatically be in Manual
mode and won't operate automatically in case of line failure. The AUTO LED on the mimic
panel is OFF.
When the handle is attached, the switch will automatically be in "manual
mode" with the automatic operation disabled.
Do not tamper with wires when the transfer switch is powered on.
Before powering on the transfer switch, please manually operate it to ensure it
can operates and moves normally.
Then power supply is normal and without the handle attached or EMRG
OFF signals, the switch will be in automatic mode and switch to the primary
line upon initial power-up. Keep the handle attached if you do not want the
switch to be in automatic mode upon initial power-up.
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1SCC303015M0201 l ABB Installation and operating instructions, 34OTM_C_21D rev. B
Figure 5. Operating the switch manually
3. Description