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c. Install the oil suction pipe. Insert one end of the oil suction pipe into the switch insert’s oil suction pipe
positioning hole, and the other end into the bell-type flange oil suction pipe hole. (See Figure-6-18)
d. Installation of top cover. Put the top cover on the flange of tap changer head to seal it. Make sure that the
sealing ring is in the correct position.
Do not damage the O-ring on the coupling connector.
Wipe the sealing surface carefully before installing the top
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