USER CHECKLISTS
The following checklists are provided to assist all users:
• Daily Checklist ………………………………………………………………….……………Section IV
• Pre-Dive Checklist ………………………………………………………………….……… Section IV
• In-Water Checklist for Supervisor …………….…………….…….…….…….…….……. Section IV
• Post-Dive Checklist…………….…………….…….…….…….…….…….………………. Section IV
GAS SUPPLY PRESSURES
Regulated surface supply pressures for the G3000SS diving helmet are detailed in the In-Water Checklist.
Gas systems used to supply the G3000SS helmet must be capable of supplying gas to the diver at the
required supply pressure and flow rates. The use of unregulated gas sources is extremely dangerous.
The regulated surface supply pressures are intended for use with properly adjusted and maintained
G3000SS helmets only. They should not be used with other manufacturers’ helmets or masks.
The G3000SS helmet and the umbilical and associated supply system must be properly configured,
maintained, and adjusted in order to supply the diver with the correct quantity of breathing gas.
NOISE EXPOSURE
The maximum internal noise levels for the G3000SS diving helmet are as follows:
Maximum noise level at 40 l/min RMV: 83.4 dB(A)
- Limit: 85 dB (A); re 204Pa.
Maximum noise level at 75 l/min RMV: 98.3 dB(A)
- Limit: 135 dB (A); re 204Pa.
Maximum permissible noise exposure times are to be calculated using the above levels, the applicable
national occupational health limits, and the expected time that the diver will spend at each RMV.
SET-UP PROCEDURES
Testing the Check Valves:
The helmet is equipped with two check valves, one for the main gas supply
and the other for emergency breathing gas (bailout supply). Each check valve should be checked prior
to connecting a gas hose. To check each check valve, the free flow valve must be open and breathing
gas must be pulled from the check valve to verify that it is closed. The gas hoses may be attached only
after verifying that the check valves are properly functioning.
Testing the Emergency Gas Supply (EGS)
: After the diver has verified a proper seal of the helmet on
his head and the main breathing gas supply is bled from the gas hose, the diver must test his emergency
gas supply (bailout). The procedure for testing the bailout supply is detailed in the Pre-Dive Checklist.
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Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual