Aqua Lung G3000SS Manual

AQUA LUNG G3000SS HELMET
OPERATIONS & MAINTENANCE MANUAL
Rev. 5/18

2 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
COPYRIGHT NOTICE
This manual is copyrighted, all rights reserved. It may not, in whole or in part, be copied, photocopied,
reproduced, translated, or reduced to any electronic medium or machine readable form without prior
consent in writing from Aqua Lung America, Inc. It may not be distributed through the internet or
computer bulletin board systems without prior consent in writing from Aqua Lung America.
© 2018 AQUA LUNG AMERICA, INC.
AQUA LUNG G3000SS DIVING HELMET OPERATIONS & MAINTENANCE MANUAL, PN 400179
Aqua Lung G3000SS Diving Helmet
PN 400300 Helmet Complete, G3000SS
PN 400301 Helmet Complete, G3000SS w/ Hi - Use Connector
PN 400302 Helmet Complete, G3000SS w/ Marsh Marine Connector
You can contact a Technical Advisor via e-mail at:
[email protected]
[email protected]
[email protected]
Warnings, Cautions and Notes:
Pay special attention to information provided in warnings, cautions and notes which are accompanied
by these symbols:
A NOTE is used to emphasize important points, tips, and reminders.
A CAUTION indicates any situation or technique that could cause damage
to the product, and could subsequently result in injury to the user.
AWARNING indicates a procedure or situation that if not avoided,
could result in serious injury or death to the user.

3
TABLE OF CONTENTS
I. SAFETY INFORMATION ....................................................................................................................................................6
Operator and Technician Training ................................................................................................................................6
Recommended Air Supply Pressure ............................................................................................................................6
Long Duration & Cold Water Diving .............................................................................................................................6
II. WARRANTY INFORMATION.............................................................................................................................................6
OPERATIONS SECTION
III. HELMET OPERATING INFORMATION ...........................................................................................................................7
Helmet Description ........................................................................................................................................................7
Performance & Certication .........................................................................................................................................7
Dive System Requirements...........................................................................................................................................8
Bailout Congurations ..................................................................................................................................................9
Helmet Set-Up Procedures.......................................................................................................................................... 11
User Checklists ............................................................................................................................................................ 11
Gas Supply Pressures................................................................................................................................................. 11
Gas Specications....................................................................................................................................................... 11
Suit Ination ................................................................................................................................................................. 11
Use with Low Pressure Oxygen .................................................................................................................................12
Noise Exposure............................................................................................................................................................12
Helmet Weight and Mass.............................................................................................................................................12
Head Protection ...........................................................................................................................................................12
Environmental Conditions ..........................................................................................................................................12
G2000SS Helmet Conversion......................................................................................................................................12
IV. USER CHECKLISTS ......................................................................................................................................................13
CHECKLIST 1: G3000SS Diving Helmet Daily Checklist ..........................................................................................14
CHECKLIST 2: G3000SS Diving Helmet Pre-Dive Checklist ....................................................................................18
CHECKLIST 3: G3000SS Diving Helmet In-Water Checklist for Supervisor...........................................................21
CHECKLIST 4: G3000SS Diving Helmet Post-Dive Checklist ..................................................................................23
TECHNICAL SECTION
V. HELMET TECHNICAL INFORMATION...........................................................................................................................26
Authorized Technicians...............................................................................................................................................26
Factory Prescribed Procedures..................................................................................................................................26
Scheduled Service .......................................................................................................................................................26
Lubrication ...................................................................................................................................................................26
Technician Checklists..................................................................................................................................................27
General Guidelines ......................................................................................................................................................27

4 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
VI. STEP-BY-STEP DISASSEMBLY / ASSEMBLY INSTRUCTIONS .................................................................................28
Notes on Disassembly and Reassembly ...................................................................................................................28
Helmet Sub-Assemblies in this Section ....................................................................................................................28
Tools Required for Annual Maintenance ...................................................................................................................28
G3000SS Diving Helmet Disassembly Procedures...................................................................................................29
Neck Dam and Quad Ring.....................................................................................................................................29
Neck Retainer and Locking System.....................................................................................................................29
Head Liner ..............................................................................................................................................................30
Nose Clearing Device (NCD).................................................................................................................................31
Oral - Nasal Mask...................................................................................................................................................31
Communications ...................................................................................................................................................32
Double Exhaust / Water Dump Valve ...................................................................................................................33
Manifold..................................................................................................................................................................34
Airway.....................................................................................................................................................................35
Second Stage Regulator .......................................................................................................................................35
Defogger.................................................................................................................................................................36
Free Flow / Water Dump Valve..............................................................................................................................36
Face Port ................................................................................................................................................................38
G3000SS Diving Helmet Reassembly Procedures....................................................................................................39
Face Port ................................................................................................................................................................39
Free Flow / Water Dump Valve..............................................................................................................................40
Airway.....................................................................................................................................................................41
Manifold..................................................................................................................................................................41
Double Exhaust / Water Dump Valve ...................................................................................................................42
Defogger.................................................................................................................................................................44
Second Stage Regulator .......................................................................................................................................44
Nose Clearing Device (NCD).................................................................................................................................44
Oral - Nasal Mask...................................................................................................................................................45
Communications ...................................................................................................................................................45
Head Liner ..............................................................................................................................................................46
Neck Retainer and Locking System.....................................................................................................................47
Neck Dam and Quad Ring.....................................................................................................................................47
VII. TECHNICIAN CHECKLISTS.........................................................................................................................................48
CHECKLIST 5: G3000SS Diving Helmet Monthly Inspection and Maintenance Checklist....................................49
CHECKLIST 6: G3000SS Diving Helmet Annual Inspection and Maintenance Checklist .....................................54
Part 1 - Helmet Disassembly ................................................................................................................................55
Part 2 - Helmet Reassembly .................................................................................................................................62
Part 3 - Helmet Final Testing ................................................................................................................................69

5
VIII. APPENDICES............................................................................................................................................................... 72
A. Main Assemblies ..................................................................................................................................................... 73
B. Inner Components................................................................................................................................................... 74
C. Manifold.................................................................................................................................................................... 75
D. Free Flow / Water Dump Valve ............................................................................................................................... 76
E. Second Stage Regulator ......................................................................................................................................... 77
F. Nose Clearing Device (NCD) ................................................................................................................................... 78
G. Neck Dam................................................................................................................................................................. 79
H. Welding Shield Kit................................................................................................................................................... 80
I. Welding Shield Assembly Installation Instructions............................................................................................... 81
J. Free Flow Plug Insert Kit Installation Instructions ............................................................................................... 82
K. Camera / Light Bracket Installation Instructions.................................................................................................. 84
L. Terminal Block Communications Kits ................................................................................................................... 85
M. Twist-On Communications Kits............................................................................................................................. 86
N. Communications Kit Installation Instructions...................................................................................................... 87
O. Torque Specications............................................................................................................................................. 91
P. Recommended Cleaners and Lubricants .............................................................................................................. 92
Q. Cleaning and Lubricating ....................................................................................................................................... 93
R. Annual Service Kit................................................................................................................................................... 94
S. Field Spares Kit ....................................................................................................................................................... 95
T. Maintenance Log Sheet ........................................................................................................................................... 96
IX. G3000SS DIVING HELMET SPARE PARTS LIST ........................................................................................................ 97
X. G3000SS DIVING HELMET ACCESSORIES ............................................................................................................... 100

6 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
I. SAFETY INFORMATION
OPERATOR AND TECHNICIAN TRAINING
The G3000SS Diving Helmet should be used and operated by properly trained and certied
divers and tenders only.
The technical procedures in this manual are to be performed only by personnel who have
received factory authorized training through an Aqua Lung Service & Repair Seminar.
RECOMMENDED AIR SUPPLY PRESSURE
The recommended air supply pressure is 129 - 326 PSI (8.9 - 22.5 BAR) Over Bottom Pressure as per
the G3000SS Diving Helmet Regulated Supply Pressure Table in Checklist 3, In-Water Checklist for
Supervisor.
LONG DURATION & COLD WATER DIVING
Diving for long durations and/or in cold water may subject the diver to severe body and respiratory heat
loss. This may lead to a decrease in body core temperature also known as “hypothermia.” Hypothermia
is an extremely dangerous condition and can lead to a loss of reasoning ability, decreased manual
dexterity, uncontrollable shivering, unconsciousness, and death.
II. WARRANTY INFORMATION
The manufacturer warrants every new helmet to be free from defects in workmanship for a period of
twelve (12) months from date of purchase.
Parts covered under the warranty:
• This warranty covers all metal parts.
Parts not covered under the warranty:
• This warranty does not cover any soft parts (e.g. o-rings, diaphragms), communications
components, headliners, or chrome plating. Due to the electrolytic nature of underwater cutting
and welding, chrome plating cannot be warranted when the diver engages in these activities.
The warranty becomes null and void if:
• The product has been modied without consent of Aqua Lung America, Inc.
• The product has been misused, damaged, put into a situation or service for which the product is
not intended or if the product has not been correctly maintained according to the G3000SS Diving
Helmet Operations & Maintenance Manual.

7
III. HELMET OPERATING INFORMATION
HELMET DESCRIPTION
The G3000SS Diving Helmet is a high performance diving helmet for professional diving applications.
The key features of the G3000SS include:
• Balanced design second stage regulator manufactured by Apeks.
• High grade communications manufactured by OTS.
• Stainless steel (316L) shell, neck retainer and neck ring: no dissimilar metals.
• Breathing loop components protected inside shell.
• Low component count and reduced maintenance load.
• Optional modication kit for eld conversion to free ow mode.
OPERATIONS SECTION
The G3000SS has a similar design to the original Gorski G2000SS helmet but with these upgrades:
• Apeks GX300 second stage regulator.
• Double exhaust and double water dump protection.
• Ergonomic free ow knob.
• 4-wire communications (Marsh Marine or Hi-Use version).
PERFORMANCE AND CERTIFICATION
The G3000SS Diving Helmet:
• Is suitable for use with standard compressed breathing air ("diving air"). See below.
• Meets Work of Breathing (WOB) performance requirements at all required standard and high
Respiratory Minute Volume (RMV) work rates.
• Meets inspired partial pressure of carbon dioxide performance requirements at all required
standard and high Respiratory Minute Volume (RMV) work rates.
• Is tested and certified for use in water temperatures down to 4 degrees Celsius (39.2
degrees Fahrenheit).
The G3000SS Diving Helmet has been CE certied by DNV-GL, Det Norske Veritas-Germanischer Lloyd
SE, Brooktorkai 18, 20457 Hamburg, Germany, Notied Body number 0098 and has been found to be in
accordance with the requirements of EC Directive 89/686/EEC for Personal Protective Equipment (PPE).
When examined the product satised the requirements of the manufacturer’s technical specications
(based upon EN 15333-1: 2008, Respiratory Equipment – Open-circuit umbilical supplied compressed
gas diving apparatus requirements), which has been previously assessed and deemed to meet the
basic health and safety requirements (Annex II) of the directive. The DNV GL Certicate Nos are
55594-14 HH, and 55594-14 HH Addition 1.
The CE certication for the G3000SS Diving Helmet includes the use of the Bailout Switch Block and
the Helmet Side Block. See Bailout Conguration section below for further information.
CE certication of the Emergency Gas Supply (EGS) or bailout system includes the mandatory use of
Apeks rst stage regulators type FSR (XTX200), FST (XTX100), DST (XTX50), or DST.
The CE certicated depth of 50 m (165 ft) is a standard maximum certication depth for diving equipment that
is used to provide a uniform benchmark for measuring performance. It is not an equipment depth limitation.

8 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
DIVE SYSTEM REQUIREMENTS
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 rst stage regulator tted with
pressure gauge, and pressure relief valve). All EGS components are to be CE-certied.
• Diving Harness (for attachment of umbilical, bailout gas supply and weights).
• Personal diving equipment (e.g. suit, ns, gloves).
Diver dressed in Aqua Lung (Gorski) G3000SS Diving Helmet with
harness mounted Bailout Switch Block (bailout conguration 1).
Diver wearing Aqua Lung H3 Diving Harness and HAZMAT dry suit.

9
BAILOUT CONFIGURATIONS
All Emergency Gas Supply (EGS) or bailout supply congurations use a diving cylinder and rst stage
regulator tted with a submersible pressure gauge (SPG) and an adjustable pressure relief valve (AP0849/K).
WARNING: The EGS/Bailout supply rst stage regulator must be tted with a pressure
relief valve in a Medium Pressure (MP) port. This is to protect the MP hose in the event
of rst stage regulator malfunction.
CAUTION: The EGS/Bailout Cylinder may be rigged in a “Valve Up” or “Valve Down’ position
in Bailout Congurations 1 and 2. Users must be aware of the potential for obstruction of
the helmet manifold if the bailout system is rigged in the cylinder "Valve Up" conguration.
Bailout Conguration 2 - EGS/Bailout Cylinder with Helmet Side Block.
This conguration uses a Helmet Side Block P/N AP0281/SB mounted on the right hand side of
the helmet. The helmet side block provides an easy to operate ON/OFF valve for the EGS/bailout
supply. The bailout inlet connections on the helmet and the side block are standard 9/16 inch
SCUBA male ttings.
Reference: Apeks document no. 530009, Helmet Side Block Valve Owner & Maintenance Manual.
In both congurations the bailout supply is routed from the EGS/bailout cylinder (tted with rst stage
regulator) rst through the switch block or helmet side block then to the helmet manifold. The EGS/
bailout cylinder is opened during pre-dive checks and remains open throughout the dive. The switch
block or helmet side block is opened during pre-dive checks and then remains closed until required for
use. All hoses remain pressurized to prevent water ingress (See bailout conguration photos 1 & 2
on the next page).
There are 2 standard congurations for an Emergency Gas Supply (EGS) or bailout supply:
Bailout Conguration 1 - EGS/Bailout Cylinder with harness-mounted Switch Block.
This conguration uses a Bailout Switch Block P/N AP0281/G mounted on the diver’s harness. The
switch block provides an easy to operate ON/OFF valve for the EGS/bailout supply. The bailout
inlet connections on the helmet and the switch block are standard 9/16 inch SCUBA male ttings.
Reference: Apeks document no. AP2549, Switch Block Valve Owner & Maintenance Manual.
In addition there is a third, alternative, equipment conguration for use with an Emergency Gas Supply
(EGS) or bailout supply:
Bailout Conguration 3 - EGS/Bailout Cylinder with direct connection to helmet.
This conguration uses the cylinder “Valve Down” conguration with the bailout supply hose
connected directly from the bailout rst stage regulator to the rear manifold on the helmet. During
pre-dive checks the bailout rst 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 Conguration.

10 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
Upper hose routed from harness-mounted
switch block to helmet manifold.
Bailout Conguration 1
EGS / Bailout Cylinder with Harness-Mounted Switch Block
Bailout Conguration 2
EGS / Bailout Cylinder with Helmet Side Block
Upper hose routed from EGS / Bailout
cylinder to helmet side block, lower hose
routed to helmet manifold.
Lower hose routed from EGS / bailout cylinder
to harness-mounted switch block.

11
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 ow 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 congured,
maintained, and adjusted in order to supply the diver with the correct quantity of breathing gas.
HELMET SET-UP PROCEDURES
The following 2 functional checks are essential and are to be conducted prior to diving.
Check Valves: The helmet is equipped with two check valves, one for the main gas supply and the
other for the Emergency Gas Supply (bailout). Each check valve should be checked prior to connecting
a gas hose. To check each check valve, the free ow valve must be open and the tender or diver must
try to pull (inhale) breathing gas through the check valve to verify that it is closed. The umbilical gas
hose may be attached only after verifying that the check valves are functioning properly. The procedure
for testing the check valves is detailed in the Daily Checklist (See Checklist 1 for details).
Emergency Gas Supply (EGS) Functional Check: After the diver has veried 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 (See Checklist 2 for details).
GAS SPECIFICATIONS
Compressed breathing air used with the G3000SS Diving Helmet must be in accordance with EN
12021: 2014, Respiratory equipment. Compressed gases for breathing apparatus.
SUIT INFLATION
Suit ination systems must only use air or gas mixtures with an oxygen content less than or equal to
that in air as specied in EN 12021.
A Flow Restrictor (AP0730) should always be tted whenever a suit inator hose is tted to the MP
outlet port on the helmet manifold. This in-line ow restrictor will reduce gas ow, and consequential
loss of breathing gas, in the event of a suit ination hose failure.
USER CHECKLISTS
The following checklists are provided to assist all users:
• Checklist 1 - Daily Checklist ........................................................................................... Section IV
• Checklist 2 - Pre-Dive Checklist ..................................................................................... Section IV
• Checklist 3 - In-Water Checklist ..................................................................................... Section IV
• Checklist 4 - Post-Dive Checklist ................................................................................... Section IV

12 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
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.
HEAD PROTECTION
The G3000SS diving helmet provides Class B head protection as detailed in EN 15333-1: 2008.
USE WITH LOW PRESSURE OXYGEN
All breathing loop materials are compatible for use with low pressure pure oxygen (100% O2) at
pressures up to 25 bar (363 psi). See Appendix P for guidance on suitable lubricants.
HELMET WEIGHT AND MASS
The weight of the G3000SS diving helmet is 31.5 lb (14.3 kg). This equates to a mass of 140 Newtons.
G2000SS HELMET CONVERSION
Existing Gorski G2000SS diving helmets may be converted to the G3000SS diving helmet standard
by retrot of the items listed below. A double exhaust / water dump must be tted at the same time to
ensure that the helmet provides a dual valve (i.e. double exhaust) level of protection. See Appendix A
for details of the double water dump exhaust.
The following items are needed to convert a G2000SS to a G3000SS diving helmet:
• PN AP0300, Apeks GX300 Regulator
• PN AP0270, Handwheel Assembly
• PN 400111, Double Exhaust / Water Dump Kit
• PN 400150 Terminal Block Hi-Use Communications Module Kit or 400151 Terminal Block Marsh
• Marine Communications Module Kit.
• PN 400017, Communications Bulkhead
• Upgraded Latch Catch Assemblies and Neck retainer - See Appendix A
ENVIRONMENTAL CONDITIONS
The G3000SS is suitable for diving in all common environmental conditions with the following guidance:
Contaminated Water Diving (CWD): Diving in contaminated waters requires special training, equipment,
and procedures for all personnel involved. All helmets and suits may leak water under certain conditions.
The G3000SS has a double exhaust regulator and double exhaust / water dump exhaust tted as standard
in order to provide an increased level of protection for the diver. The G3000SS diving helmet is suitable for
diving in contaminated water in accordance with national and international regulations and safety codes.
Decompression diving: This type of diving always involves the risk of decompression illness. Omitted
decompression due to a loss of the breathing gas supply or other incident may lead to serious injury or
death. Use of a G3000SS helmet mask cannot prevent this type of injury.

13
IV. USER CHECKLISTS
Checklist 1 G3000SS Diving Helmet Daily Checklist
Checklist 2 G3000SS Diving Helmet Pre-Dive Checklist
Checklist 3 G3000SS Diving Helmet In-Water Checklist for Supervisor
Checklist 4 G3000SS Diving Helmet Post-Dive Checklist
NOTE: The terms “hook”, “loop” and “hook & loop” are used throughout this manual. Hook & Loop
is commonly known as Velcro®, which is a trademarked brand of hook & loop. Some of the helmet
components have hook & loop attachments, including the head liner, free ow plug kit and microphone.

14 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
CHECKLIST 1
G3000SS DIVING HELMET
DAILY CHECKLIST
BEFORE DIVING THE G3000SS DIVING HELMET, THE PROCEDURES IN THIS CHECKLIST MUST
BE COMPLETED, NORMALLY ON A DAILY BASIS (I.E. PRIOR TO THE FIRST DIVE OF THE DAY).
NOTE: The procedures in this checklist are to be performed only by personnel who
have received appropriate training in the operation of the G3000SS diving helmet.
NOTE: When using the EGS, during completion of the daily checklist, the rst stage
regulator must have an intermediate pressure (IP) output set between 129 and 150
psig (8.9 - 10.3 BAR). In addition, the rst stage regulator bleed/pressure relief valve
should be set between 180 and 200 psig (12.4 - 13.8 BAR).
WARNING: Aqua Lung strongly recommends completion of this checklist and
meeting the minimum requirements provided before using the G3000SS diving
helmet. However, these requirements are not conclusive, as further steps may be
required depending on the type of activity performed. FAILURE TO COMPLY WITH
THIS CHECKLIST MAY RESULT IN SERIOUS INJURY OR EVEN DEATH.
CAUTION: When using the G3000SS diving helmet, a correctly maintained and
serviceable Emergency Gas Supply (EGS) must be used. The EGS must include
a 1st stage regulator tted with submersible pressure gauge and pressure relief
valve. The EGS must be conrmed as fully functional prior to diving.
COMPLETE THE FOLLOWING BOXES PRIOR TO THE CHECKLIST
COMPLETE THE SIGNATURE, DATE AND COMMENTS AT THE END OF THE CHECKLIST
Helmet Serial No: Date:
Diver / Tender:
(Print Name)

15
DAILY CHECKLIST (continued)
ACTION PROCEDURE INITIALS
NECK RETAINER AND
LOCKING SYSTEM
(must be completed by diver/tender)
• Visually inspect the neck retainer assembly for
signs of damage, such as bends. Conrm that
the retainer ts properly.
• Make sure the locking system (both L and R) is
properly working and not deformed in any way.
NECK DAM
(must be completed by diver/tender)
• Visually inspect the neck dam ring for signs of
damage, such as bends, scratches on the o-ring
surface area or any other deformities.
• Visually inspect the neck seal for signs of damage
such as tears, rips or cuts.
• If the quad ring is dry, lightly lubricate the quad ring.
• Replace the neck dam assembly onto the helmet
and ensure a proper t.
HELMET INSPECTION
(must be completed by diver/tender)
• Visually inspect the helmet (interior and exterior)
for damage and/or contamination.
NOTE: If a contaminated area of the shell
is cleaned using a wire brush, the brush
must be stainless steel or the area will be
contaminated.
• Inspect the oral-nasal inhalation valve to ensure
that it is installed correctly and that the oral-nasal
mask is installed on the regulator.
• Check that the nose clearing device oper-
ates without problems. If necessary lubricate
o-rings and stem (Refer nose clearing device
assembly section of the operations and main-
tenance manual for guidance).
• Ensure the speakers and microphones are properly
installed. Refer to the communications assembly
section of the operations and maintenance manual
for guidance.
• Ensure that the head liner ts properly and is secured
to the inside of the helmet shell. Check for worn-off
hook and loop, tears and/or rips. (Refer to the head
liner assembly section of the operations and mainte-
nance manual for guidance).
NOTE: The head liner should be tted
carefully into the helmet shell so that visible
parts of the helmet shell (i.e. bare spots)
are minimized.

16 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
DAILY CHECKLIST (continued)
ACTION PROCEDURE INITIALS
EGS INSPECTION
(must be completed by diver/tender)
• Visually inspect all EGS hoses for any signs of
damage or defect.
• Ensure that the bailout cylinder is within the VIP
and the hydrostatic date.
• Check the rst stage regulator intermediate
pressure (IP) setting before each dive.
• Make sure there is no damage to the diver harness and
cylinder retention straps. Repair or replace if damaged.
• Visually inspect the bailout switch block or hel-
met side block (if tted) for any signs of damage
or defect, and conrm that it is attached securely
to the diver harness.
CONNECT THE EGS TO
THE HELMET
(must be completed by diver/tender)
• Conrm the check valve is properly functioning by
orally checking it (suck on valve to conrm seal).
• Connect the first stage regulator, fitted with
submersible pressure gauge, to the EGS
cylinder then proceed as follows:
DIRECT BAILOUT CONFIGURATION:
Connect the regulator hose directly to the helmet
check valve.
BAILOUT SWITCH BLOCK OR HELMET SIDE
BLOCK CONFIGURATION:
Connect the regulator hose to the bailout inlet con-
nection on the switch block or helmet side block.
Connect the second hose from the switch block or
helmet side block outlet to the helmet check valve.
• With the cylinder supply turned off, open and
close the free ow / water dump valve to verify
efcient operation of the valve.
• Open the EGS supply valve on the cylinder and
log the pressure.
EGS CYLINDER PRESSURE __________ psig.
• Immediately after logging the EGS cylinder
pressure, proceed as follows:
DIRECT BAILOUT CONFIGURATION:
Open the helmet free ow / water dump valve ¾ to
1 full turn and conrm a powerful ow of gas coming
out of the defogger train.
BAILOUT SWITCH BLOCK OR HELMET SIDE
BLOCK CONFIGURATION:
Open the switch block or helmet side block valve
prior to opening the helmet free ow / water dump
valve and conrming the gas ow.
• After conrmation, close the free ow / water dump valve
(and switch block or helmet side block valve if tted).
NOTE: Ensure that the EGS
is maintained properly.

17
DAILY CHECKLIST (continued)
ACTION PROCEDURE INITIALS
ATTACH THE UMBILICAL
(to be completed by tender)
• Conrm the check valve is properly functioning by
orally checking it (suck on valve to conrm seal).
• Blow air through the umbilical to remove any debris,
and attach the umbilical into the umbilical adapter
located on the check valve.
CHECK THE SECOND
STAGE REGULATOR
(must be completed by diver/tender)
• Slowly depress the purge button to full extent and
conrm a sufcient audible ow of gas.
NOTE: If the regulator free ows, or if after
fully depressing the purge button there is a
weak ow of gas, the regulator needs to be
adjusted or the low pressure valve should be
replaced or serviced by a trained technician.
CONFIRM FUNCTION OF
COMMUNICATIONS
(to be completed by diver)
• Check all communications to conrm correct
functioning.
CHECK DRY-SUIT
INFLATION HOSE
(must be completed by tender).
• If tted, conrm the dry suit ination valve and
exhaust valve are functioning properly.
CHECK HELMET FOR
LEAKS
• Apply soap and water to ALL gas ttings and
connections (including the EGS) to check for
leaks on the helmet.
FINAL CHECK
(to be completed by tender)
• Check to ensure the neck retainer is in the correct
position and properly locked.
• Ensure the diver's safety harness is in good
condition.
• Check for free movement of the helmet.
• Ensure the EGS hose quick disconnect is in good
condition and is functioning properly.
• Ensure diver has boots, gloves, knife and other
accessories.
To Diver / Tender: Note comment on the space provided below. Be sure to log maintenance in
the applicable maintenance log.
Comments:
Signature: Date:

18 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
CHECKLIST 2
G3000SS DIVING HELMET
PRE-DIVE CHECKLIST
BEFORE COMPLETING THIS CHECKLIST, THE DAILY CHECKLIST MUST BE COMPLETED.
BEFORE DIVING THE G3000SS DIVING HELMET, THE PROCEDURES IN THIS CHECKLIST MUST
BE COMPLETED.
NOTE: The procedures in this checklist are to be performed only by personnel who
have received appropriate training in the operation of the G3000SS diving helmet.
NOTE: Aqua Lung strongly recommends that the diver be assisted by the tender or
supervisor when preparing for diving and conducting the procedures in this checklist.
WARNING: Aqua Lung strongly recommends completion of this checklist and
meeting the minimum requirements provided before using the G3000SS diving
helmet. However, these requirements are not conclusive, as further steps may be
required depending on the type of activity performed. FAILURE TO COMPLY WITH
THIS CHECKLIST MAY RESULT IN SERIOUS INJURY OR EVEN DEATH.
CAUTION: When using the G3000SS diving helmet, a correctly maintained and
serviceable Emergency Gas Supply (EGS) must be used. The EGS must include
a 1st stage regulator tted with submersible pressure gauge and pressure relief
valve. The EGS must be conrmed as fully functional prior to diving.
COMPLETE THE FOLLOWING BOXES PRIOR TO THE CHECKLIST
COMPLETE THE SIGNATURE, DATE AND COMMENTS AT THE END OF THE CHECKLIST
Helmet Serial No: Date:
Diver/Tender:
(Print Name)

19
PRE-DIVE CHECKLIST (continued)
ACTION PROCEDURE INITIALS
SUPPLY GAS
(must be completed by supervisor)
• Supervisor must ensure the diver has sufcient
breathing gas pressure supplied to the helmet
for depth.
BREATHING SYSTEM
FUNCTION CHECK
(must be completed by diver)
• Ensure proper functioning of free ow valve by
opening and closing the valve.
• Check that breathing resistance is comfortable.
• Ensure gas purge function by pressing in the
purge button.
• Ensure the bail out cylinder valve is closed.
COMMUNICATION CHECK
(must be completed by diver
and communications operator)
• Ensure the speakers and microphone are
functioning correctly.
CHECK DRY SUIT
INFLATION HOSE
(must be completed by tender)
• Ensure dry suit ination valve and exhaust valve
are functioning correctly.
FULL HELMET CHECK
(must be checked by supervisor)
• Check all helmet gas ttings and connections for
leaks. Check EGS for leaks.
• Check adjustment or t of entire helmet, including
the divers safety harness, free movement of the
helmet, EGS hose quick disconnect, boots, gloves,
knife and accessories.
EGS FUNCTIONAL
CHECK
(must be completed by diver
and witnessed by tender)
• Turn off the main breathing gas supply and
breathe down the umbilical (free ow / exhaust
valve may be used to assist).
• Open EGS (bailout) supply (i.e. cylinder valve,
or cylinder valve and switch block or helmet side
block valve, depending on bailout conguration)
and take two breaths from the EGS supply.
• Close the EGS supply valve(s) as follows:
DIRECT BAILOUT CONFIGURATION:
Close the cylinder valve (the hose remains pressurized).
BAILOUT SWITCH BLOCK OR HELMET SIDE
BLOCK CONFIGURATION:
Close the switch block or helmet side block valve.
The cylinder valve is to remain open. Both hoses
remain pressurized.
• Open main breathing gas supply. Diver reports:
Breathing OK.
NOTE: This check is mandatory and must be
completed for all EGS (bailout) congurations.
After checking, the EGS supply must be shut
leaving the supply hose(s) pressurized.

20 Aqua Lung G3000SS Diving Helmet Operations & Maintenance Manual
PRE-DIVE CHECKLIST (continued)
ACTION PROCEDURE INITIALS
CHECK DIVER'S ENTIRE
RIG
(must be completed by supervisor)
WARNING: Both latch
catches must t into
place correctly or the
helmet may ood.
• Check adjustment and t of the entire rig, specic
points:
• Head liner secured inside the helmet shell.
• Neck dam is installed.
• Neck retainer secured with both locking catches
(L and R) engaged on neck retainer.
• Chin strap properly fastened.
• Check adjustment and t of the diver's safety
harness, free movement of the helmet, EGS
hose quick disconnect, boots, gloves, etc.
• Ensure helmet supply pressure is at minimum
129 psig (8.9 bar) as per the regulated supply
pressure table in Checklist 3, In-Water Checklist
for Supervisor.
FINAL BREATHING
CHECK
(must be completed by diver)
• Check to ensure the helmet is breathing correctly
with no complications.
NOTE: Ensure all equipment is properly
adjusted and is properly functioning.
Comments:
Signature: Date: