7-14
(3) Replacement of the zinc ring (work in lifting)
In order to prevent electrolytic corrosion, a zinc ring is attached to the upper part of the
dome. Replace the ring periodically.
Change electrolytic corrosion-preventing zinc plates annually.
The zinc ring has a two-part structure.
Remove two hexagon socket head cap screws to remove the zinc ring.
After replacement, tighten the zinc ring with fixing screws.
The order model number
Hexagon socket
head cap screw
・Change electrolytic corrosion-preventing zinc plates annually.
Be sure to perform electrolytic corrosion prevention. If electrolytic corrosion
prevention is not performed, the transducer may fall accidentally or there
may be an influx of seawater into a dome, in the worst case.
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