8
AUTOM ATI C TR A N S FE R SWITCH , OTM _C _ 21D
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Quick start
To operate the switch manually:
1. Attach the handle to the switch panel. You can
attach the handle in any position.
Figure 5. Operating the switch manually
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 oper-
ates 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.
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.
