I.5.1 XSG/RMG connector type only
Guidelines
Female can trap water (suggest flush with alcohol and blow dry).
Lubricate male mating side with 3M Silicon Spray or DOW Corning #111 valve lubricant or
equivalent.
Avoid contact with noxious solvent.
Connector must be lubricated on a regular basis.
Elastomers can be seriously degraded if exposed to direct sunlight or high ozone levels for
extended periods of time.
Bulkhead connector greasing
Squeeze the silicone grease onto the end of your finger and apply a light film, even coating of grease, to
the plastic body of the connector.
Dummy plug/cable end greasing
Squeeze the silicone grease onto the end of your finger. Apply a light film, even coating of grease, to the
inside of the cable end or dummy plug.
After cleaning and inspecting and before inserting the dummy plug or the cable end onto a bulkhead
connector, proceed to properly grease using 100% silicone grease (Dow DC-4 or equivalent). Do not
use petroleum-based lubricants, as they will damage the connectors.
In alternative to grease, we suggest using a 100% silicon spray.
I.5.2 Connector insertion
Always align the bump on the cable end or dummy plug with the big pin on the bulkhead connector.
Push the cable end or the dummy plug straight onto the bulkhead connector; do not twist the cable end
or dummy plug during the insertion. Twisting can cause bent pins on the bulkhead connector.
Air trapped
It may be possible that some air remains trapped between the bulkhead connector plastic body and the
plug-in connector. It happens more often with newer cables or dummy plugs or in cold waters (see the
below dedicated session).
Therefore, after the cable or dummy plug is mated, pass your fingers along the cable end or dummy
plug toward the bulkhead connector, thus making any trapped air leak out. Please be aware that failure
to eject the trapped air will result in the connector leakage, with some consequent problems during
deployment like OCEAN SEVEN 3xx probe malfunctions and bulkhead connector pin and cable end
corrosions.
Cold Environments
In cold environments or when retrieving the probe from cold water, the cable or dummy plug may be
hard to install and remove. In such cases, wrap some cloth round the dummy plug or connector end
and pour hot water on the cloth. Let it for some minutes and then try again. The warmed plastic should
become flexible enough to facilitate the removing.
Whenever possible, always install the dummy plug and cable end in warm environments.
I.5.3 MCBH/MCIL connector type only
OCEAN SEVEN 3xx with titanium housing may use wet-pluggable MCBH/MCIL connectors instead of
the standard XSG/RMG ones. These kinds of connector are easy to mate and require less force to be
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