CCR Air Diluent Diver Course - HOLLIS PRISM II or Liberty

  • Brand: TDI
  • Product Code: Rebreather course
  • Availability: In Stock

CCR Air Diluent Diver Course - HOLLIS PRISM II or Liberty

The  Closed Circuit Rebreather (CCR) Air Diluent Diver Course is your first step into closed circuit rebreather diving and your first truly quiet dive experience!Using the latest technology in CCRs can maximize your gas supply and provide an optimum breathing gas for any depth by maintaining a constant partial pressure of oxygen. It’s like having a nitrox blending machine on your back!

During this course, your  Instructor will teach you all of the necessary skills to conduct no decompression CCR dives to a maximum depth of 30 metres/100 feet using air diluent.

Who this rebreather course is for:

The certified diver looking to advance their diver level training and equipment configurations by learning to dive a rebreather. Whether you are an avid photographer, want to experience the silence of diving a rebreather, or looking to get closer to the marine life – rebreather diving is for you.

Rebreather Course prerequisites:

Minimum age 18 

Provide proof of 20 logged open water dives 

Provide proof as a  Nitrox Diver or equivalent from agencies recognized by 

What you can expect to learn:

The  CCR Air Diluent Diver course takes an in-depth look at all of the following and more:

History and evolution of rebreathers 

Comparison of open circuit (OC), closed circuit, and semi-closed circuit, rebreather (SCR) systems noting the pros and cons of each 

Practical mechanics of the system 

Gas physiology 

Proper scrubber packing: in accordance with manufacturers recommendation 

Electronic or manual systems design and maintenance 

Dive tables 

Dive computers 

Dive planning 

Emergency procedures 

Dive checklists 

Predive checks

Some of the required skills you will have to demonstrate include all of the following and more:

All open water dives must be between 9 metres/30 feet and 30 metres/100 feet 

Two dives must be deeper than 20 metres/50 feet and one dive must be deeper than 27 metres/90 feet 

Partial pressure of oxygen not to exceed manufacturers recommendation or a working limit of 1.3 

All dives to be completed within CNS percentage limits with a recommend maximum of 80 percent of the total CNS limit 

Where the user opts for an automatic diluent valve (ADV) fitted and approved by the manufacturer, additional skills such as regular diluent gauge monitoring and addition control must be emphasized 

Unit build up and break down 

Predive checks 

Verify diluent and oxygen contents using an analyzer 

Demonstrate correct predive planning procedures 

Cover emergency procedures 

Use of BCD/dry suit and effective management of loop breathing volume for buoyancy control 

Stop at 13-6 metres/ 10-20 feet on descent for leak/bubble check 

Electronic system monitoring for partial pressure of oxygen levels (set point) and switching set points 

Use of lift bag, or surface marker buoy and reel, where appropriate 

Proper execution of the dive within all pre-determined limits 

Demonstration of safety stops at pre-determined depths 

Constant loop volume management 

Post dive clean of unit 

Diver maintenance of unit

What’s in it for you?

Upon successful completion of this course, graduates may engage in diving activities utilizing the CCR they were trained to dive without direct supervision of the  Instructor so long as the following limits are adhered to:

The diving activities approximate those of training 

The areas of activities approximate those of training 

Environmental conditions approximate those of training 

To a maximum depth of 30 metres/100 feet 

No decompression dives are permitted


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