What maintenance should be performed on zippers of dry suits?

Regular cleaning and lubrication of dry suit zippers is essential for their optimal performance and longevity. Zippers are often exposed to harsh conditions, including saltwater, sand, and other debris that can lead to corrosion or malfunction over time. By cleaning the zippers after each dive, you can remove any salt, grit, or contaminants that may accumulate. Lubricating the zippers further enhances their function, preventing them from getting stuck and ensuring smooth operation.

Neglecting to maintain the zippers, as suggested in the first option, could result in a malfunction during a dive, which may compromise the suit's integrity and the diver's safety. Checking the zippers only before long dives may not be sufficient, as regular maintenance is essential for all dives. Lastly, using saltwater as a maintenance method would be counterproductive, as it can accelerate corrosion rather than protect the zipper. Hence, the proper approach entails routine cleaning and lubrication to ensure the zippers remain functional and reliable throughout their use.