Air Diluent CCR

Requirements

• Minimum age: 18 years old.
• Provide proof of 20 logged open water dives. If completing a unit crossover, provide proof of 10 logged CCR dives in the last 12 months.
• Provide proof as a TDI Nitrox Diver or equivalent.
• If the rebreather is a TDI approved sidemount rebreather, the student must hold the TDI Sidemount Diver certification or equivalent, provide proof of 10 logged sidemount dives, and any additional requirements the sidemount rebreather manufacturer may have.

What will you learn?

Theory:

• History and Evolution of Rebreathers.
• Comparison of Open Circuit, Closed Circuit and Semi Closed Circuit Rebreather Systems.
• Practical Mechanics of the System.
• Gas Physiology.
• Proper Scrubber Packing; according to the manufacturer’s recommendation.
• Electronic or Manual Systems Design and Maintenance.
• Dive Tables.
• Dive Computers.
• Dive planning.
• Emergency Procedures.

Skills

• Build unit based on manufacturer’s specifications using manufacturer’s manual/build checklist.
• Pre-dive checks.
• Verify diluent and oxygen (O₂) cylinder contents using O₂ analyzer where appropriate.
• Demonstrate correct pre-dive planning procedures.
• Emergency Procedures.
• Use of BCD/suit and effective management of loop breathing volume for buoyancy control.
• Stop at 3-6 meters / 10 – 20 feet on descent for leak bubble check.
• Electronics systems monitoring for PO₂ levels (SETPOINT) and switching setpoints.
• Manual control of setpoint if electronically controlled CCR is not used.
• Use and adjustment of Heads Up Displays and computers.
• Mask removal and replacement.
• Use of lift bag / delayed surface marker buoy and reel (where relevant and applicable).
• Proper execution of the dive within all pre-determined dive limits.
• Demonstration of safety stops at pre-determined depths.
• Constant loop volume management.
• Cell validation checks with appropriate use of diluent and oxygen.
• Post dive clean of unit.
• Diver maintenance of unit.

Included throughout the course:

• Private instructor.
• Classroom sessions.
• Transport to the cenotes or boat from the shop.
• Single, CCR, Sidemount and Doubles tanks.
• Weights.
• EAN 32 fills.
• Certification card.
• Water and snacks.

Not included:

• Cenote entrance fee (x day between US$ 10 15).
• Basic diving gear
• Manual or elearning.
• O2, Deco Gases and Trimix (when applicable).
• Lunch.
• Diving insurance.

Additional Services

• Equipment rental and/or sale
• Basic diving gear
  • Rental US$ 5 each x day (Wetsuit, Mask, Boots, Fins)
• GASES Example
  • ​EAN 50, 80 CUF. US$ 21 per tank
  • ​O2 100% 13 CUF. US$ 25 per tank
  • ​Trimix 21/35 80 CUF. US$ 85 per tank
• Cave Equipment
  • Sidemount Harness (Rental US$ 20 x day).
  • Sidemount Regulator Set (Rental US$ 25 x day).
  • Twinset Wing / Backplate (Rental US$ 20 x day).
  • Twinset Regulator Set (Rental US$ 25 x day).
  • Stage Regulator and Rig ( US$ 15 x day).
  • Cave Primary Light (US$ 20 x day).
  • Backup Light (US$ 5 usd x day).
• Scrubber
  • EAC Cartridge US $85 (4-5 hours scrubber)
  • Sofnolime 8 – 12 US $2 x lb.

Important Information:

Plan carfully your trip to minimize your enviromental impact, please avoid sunscreen / mosquito repellent or other skin products for all water activities. Whenever possible, choose rechargable batteries and aviod to carring things like disposable razors, plastic bags, plastic water bottels, etc. We are in a very fragil and pristine enviroment and is our responsability to keep it that way.

CCR diving is a highly demanding activity with a specific mindset and requires very good trim, buoyancy, propulsion, and awareness. We will do our best to improve your skills and knowledge, also we will set the best training plan according to the skills and experience of each diver to help them to succeed in the course but consider sometimes we need extra days to achieve the goals with a classroom or water sessions and we apply extra rate if is necessary. We strongly recommend to the students plan at least two extra days just in case.

Notes:

Please bring change of clothes & towels for cenote training days.

All courses are available in English or Spanish.