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Maintenance
Technical Reference Manual 2CKA001473B9194
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9.2
Diagnosis of faults
If the device does not function correctly, the L leading edge control can be measured via the
phase sensor (L) and determined whether the device carries current after being connected. If it
carries current, the cause of the fault is not the electronic insert.
Fig. 22:
Phase sensing L
.
Pull off the sensor [2].
4. Feed the probe of the ammeter into the phase sensor L [1].
The measuring device indicates whether the device carries current.