Troubleshooting: Chassis Operation

Impossible to insert the racking handle in connected, test, or disconnected position.

A padlock or keylock is present on the chassis or a door interlock is present.

Disable the locking function.

Impossible to turn the racking handle.

The position release button is not pushed in and so the racking handle cannot be rotated.

Push the position release button.

Circuit breaker cannot be removed from chassis.

Circuit breaker is not in the disconnected position.

Turn the racking handle until the circuit breaker is in the disconnected position and the position release button pops out.

Rails are not completely extended.

Pull out the rails of the chassis.

Circuit breaker cannot be connected (racked in).

Chassis and circuit breaker do not match (mismatch protection).

Check that the chassis corresponds with the circuit breaker.

Safety shutters are locked.

Remove the locks.

Disconnecting contact clusters are incorrectly positioned.

Reposition the disconnecting contact clusters.

Chassis is locked in the disconnected position.

Disable the chassis locking function.

The position release button is not pushed in and so the racking handle cannot be rotated.

Push the position release button.

Circuit breaker has not been sufficiently inserted in the chassis.

Insert the circuit breaker completely so that it is engaged in the racking mechanism.

Circuit breaker cannot be locked in the disconnected position.

Circuit breaker is not in the correct position.

Check the circuit breaker position by checking that the position release button is popped out.

Racking handle is still in the chassis.

Remove the racking handle and store it.

Circuit breaker cannot be locked in the connected, test, or disconnected position.

Locking in any position is not enabled.

Adapt the chassis locking mechanism so that the chassis can be locked in any position.

Circuit breaker is not in the correct position.

Check the circuit breaker position by checking that the position release button is out.

Racking handle is still in the chassis.

Remove the racking handle and store it.

The racking handle cannot be inserted to connect or disconnected the circuit breaker.

Rails are not completely in.

Push the rails all the way in.

The right-hand rail (chassis alone) or the circuit breaker cannot be drawn out.

Racking handle is still in the chassis.

Remove the racking handle and store it.