Locking; Locking The Electrical Operation - ABB OTM_C Series Installation And Operating Instruction

6. Operating

6.3 Locking

You can lock the motorized change-over switch to a specifi c position.

6.3.1 Locking the electrical operation

To disable electrical operation, lock the locking latch with a padlock. After the locking latch has been
locked, the change-over switch cannot be operated electrically. You can lock the electrical operation
in all positions (I, 0, II).
To lock electrical operation:
1. Pull up the locking latch under the change-over switch panel.
2. Place the padlock under the latch, see Figure 6.7.
Figure 6.7 Locking the electrical operation
The handle cannot be attached when electrical operation is locked.
6.3.2 Locking the manual operation
By default, manual operation can only be locked to position 0. Locking to position I and II is optional
and possible only with modifi cations to the switch panel.
To lock manual operation:
1. Turn the handle to the required position.
2. Pull out the clip from the handle and place the padlock on the handle; see Figure 6.8
24 l 1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F
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