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The G3000SS Diving Helmet is used with the following minimum equipment:
•
Surface gas control system (panel) providing a regulated surface supply.
•
Diver's umbilical, including gas hose and voice communications cable.
•
Emergency Gas Supply (EGS) or bailout gas supply (including 1st stage regulator fitted with
pressure gauge, and pressure relief valve). All EGS components are to be CE-certified.
•
Diving Harness (for attachment of umbilical, bailout gas supply and weights).
•
Personal diving equipment (e.g. suit, fins, gloves).
There are 2 standard equipment configurations for use with an Emergency Gas System (EGS) or
bailout supply: cylinder "Valve Down" and cylinder "Valve Up". Both configurations use a bailout
switch block (P/N AP0281/G) mounted on the diver's harness (See Section X for details of the switch
block). The switch block provides an easy to operate ON/OFF valve for the bailout supply. The bailout
connections on the helmet and the switch block are standard 9/16 inch SCUBA male fittings.
In both configurations the bailout supply is routed from the bailout cylinder/first stage regulator through
the switch block then to the helmet manifold. The bailout cylinder is opened during pre-dive checks and
remains open throughout the dive. The switch block is also opened during pre-dive checks and then
remains closed until required for use. Both hoses remain pressurized to prevent water ingress.
Primary Configuration: This is the cylinder "Valve Down" configuration, fitted with switch block.
Lower hose routed from bailout
cylinder, upper hose routed to
helmet
CAUTION: Users must be aware of the potential for obstruction of the helmet manifold
if the bailout system is rigged in the cylinder "Valve Up" configuration.
NOTE: The cylinder "Valve Down" configuration may be used without a switch block (i.e. bailout
supply hose connected directly to the rear manifold on the helmet). During pre-dive checks the
bailout first stage regulator and hose are pressurized and the cylinder valve is then closed. The
pressurized hose prevents water ingress. Opening the bailout cylinder valve provides bailout
gas directly to the helmet. In this case the diver must be able to operate the cylinder valve
within 10 seconds. This is known as the Direct Bailout Configuration.
DIVE SYSTEM REQUIREMENTS
BAILOUT CONFIGURATIONS
Lower hose routed from bailout
cylinder, upper hose routed to
helmet
7
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