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 13 of 44
hydrostatically tested (applies to receptacles only) and electrically proven prior to despatch.
Termination of these connectors should only be undertaken by trained personnel.
7.2.2. Live Mate / Demate
The series 16 range of connectors are designed to be mated / de-mated with
POWER OFF
.
7.2.3.
Protection of receptacle’s pin contacts
Under no circumstances the contacts should be exposed to seawater with power off or on. If this
situation does occur the contact surfaces of the contacts 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 within the plug.
7.2.4. Removal of Marine Growth and Calcareous Deposits
To remove calcite growth topside or subsea 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 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 pins at the front and onto any elastomer part like insulators
and boot seals.
NOTE:
Keep the connector mated at any cleaning operation!
7.2.5. Connector Handling
Pre Mating Check
The connector that is to be joined must be free of dirt and foreign matter.
Prior to mating a series 16 connector, each conical seal of the socket insert should be filled
with a small amount of GISMA grease EK-2 (part.no.: GISMA-FETT EK-2) dielectric grease.
Thread greasing
Lightly grease the locking threads of the receptacles GISMA-FETT LP 430.
Dirty connectors to be purged with GISMA foam cleaner (SCHAUMREINIGER). Allow three
minutes to react. In case of strong dirt repeat the procedure. Then rinse with clean water.
Following rinse with the enclosed cleaning liquid (SPÜLLÖSUNG) to neutralize foam cleaner.
Check to see if the plugs locking sleeve runs smoothly.
Maintenance
For the installation of O-rings the general guidelines for O-ring assembly have to be taken
into account. Mainly the correct installation (e.g. position), cleanness and greasing with
GISMA FETT EK2 have to be ensured.
