GISMA 10 Series User Manual

Handling instructions
for GISMA connectors
HI – 2007 - 001
Document: replaces
MV 2000-020,
MV 2000-030 and
MV 2005 - 011
First issue: 15.07.2008
Rev.-Index: -Z-
From: 29.07.2020
Copyright by:
GISMA GmbH
Page 38 of 44
7.8.3. Protection of receptacle contact pins
Under no circumstances the pin contacts should be exposed to seawater with power on or off. If
this situation does occur, the contact surfaces of the pins will very rapidly degrade by electrolytic
action. If these damaged pins are subsequently mated into a socket insert there is a very high
risk of damage to the insulation and seals in the plug.
7.8.4. Removal of Marine Growth and Calcareous Deposits
To remove calcite growth subsea or topside from GISMA connectors, a solution of 50% Citric Acid
is recommended. All seawater exposed elastomeric materials in GISMA connectors have been
fully tested against 50% Citric Acid and are compatible for a duration of 1 hour. In addition, the
thermoplastic materials have good resistance to Citric Acid.
Other acid cleaners, such as >50% Acetic Acid, should not be used as they may cause
deterioration of the elastomeric materials.
Chiselling and abrasive methods are not recommended. Use of a water jet is acceptable, but the
jet should not be directed onto the shuttle pins at the front of the plug as this could result in a risk
of water being forced through the primary seals.
7.8.5. Diver Mate Connectors
 Alignment
These connectors have been designed to self-align during mating. All this is required to
ensure that the alignment pin of the plug is engaged in the alignment groove of the receptacle
before pushing the plug in.
 Pre Mating Check
Before mating, the receptacle connector should be checked for debris/deposits, especially
on the contacts. Prior to mating a visual inspection has to be done. Pin contacts have to be
straight and without any damages. The connectors have been designed to accommodate
sand and silt contamination; however large pieces of debris should be removed using a water
jet.
 Mating
The diver mateable plug is assembled with GISMA locking system including 3 clamps and
an over-all spring and a GISMA diver handle. For mating just push the plug into the
receptacle.

GISMA 10 Series Specifications

General

Brand	GISMA
Model	10 Series
Category	Cables and connectors
Language	English