7 Operation
42 10014218/00 EN
Figure18: BPC bypass
1 Drive shaft 2 CCC device with knob
ü The knob on the CCC device is in the normal operating position and the
bypass is closed.
1. NOTICE! Damage to the pin of the BPC bypass. Do not use force to turn
the drive shaft further than is possible.
2. Turn the knob on the CCC device counterclockwise so that oil flows from
the conservator-side chamber into the tank-side chamber via the bypass.
ð As soon as the pressure difference has been equalized fully, the float
opens the main valve, the status of the reed-type switch changes and
a signal is sent to the monitoring circuit of the transformer.
3. Turn the knob on the CCC device clockwise to establish normal operating
conditions.
When the knob on the CCC device is turned, the changeover
between normal operating conditions (bypass is closed) and
the reset state (bypass is open) is displayed.