REBREATHER RESOURCE CENTRE

Explore our full library of CCR articles and troubleshooting guides

DISCOVER REBREATHER DIVING

Start by discovering essential information about rebreather diving, including learning about critical equipment, maintenance and dive preparation.

CCR ESSENTIALS

Rebreather Fundamentals

Shearwater manufactures a variety of electronic components tailored to meet the diverse needs of rebreather manufacturers. Rebreather divers should understand these three main categories: communication protocols, functions, and connections.

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CO2 Scrubbers

DiveCAN

What is DiveCAN and why should I care? As more digital communication becomes integrated into rebreathers, Shearwater went in search of the best digital solution.

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CO2 Scrubbers

How does a CO2 scrubber work in a divers rebreather and how long does it last? Examine existing standardized ways to measure scrubber endurance times.

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EQUIPMENT MAINTENANCE & DIVE PREP

Why do you calibrate a CCR with pure oxygen?

Why do you calibrate a CCR with pure oxygen?

A CCR diver often has multiple gasses available, any of which could in theory be used for calibrating the O2 sensors in the CCR. The simple answer is that pure O2 is the best gas for a calibration source, read on to find out why.

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Should rebreather divers prebreathe test their rebreathers prior to a dive?

Should rebreather divers prebreathe test their rebreathers prior to a dive?

For many years it has been common practice for rebreather divers to start breathing from their rebreather prior to the dive. Should this still be a part of your predive checklist?

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DiveCAN Cable Maintenance Instructions

DiveCAN Cable Maintenance Instructions

The DiveCAN five pin connectors and analog four pin connectors are durable and reliable so long as a few steps are taken to care for them. To ensure the longest life and most reliable operation, please observe the following maintenance advice.

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REBREATHER SUPPORT

Get support from our experts with troubleshooting tips and guides to help with some of the most common equipment issues that apply to rebreather systems.

TROUBLESHOOTING

Isolate the Issue

Rebreathers are complex and rely on different components to work properly. When a problem occurs it's important to isolate the issue to one specific component before seeking service. This applies to all types of rebreather systems.

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DiveCAN

Unit Keeps Turning ON

There are several possible root causes for a peripheral unit (Petrel, Nerd, LED HUD) that turns on by itself or cannot be turned off. Following these tips will help isolate the source of the issue so you can get back in the water as quickly as possible.

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Calibration

Calibration of rebreather electronics is one of the most critical steps when setting up a rebreather for diving. Calibration ties each sensor’s mV output to a known PO₂ so that the controller reads oxygen accurately. This applies to all types of rebreather systems.

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REBREATHER COMMUNITY

Explore articles written by CCR divers and instructors showcasing some interesting real-world uses for their systems. We also highlight some helpful general technical diving knowledge in this section.

REBREATHER RESOURCES

Discover articles, videos, technical papers, and events from other rebreather experts, organizations and outlets.

  • scubadiving.com

    Rebreathers 101

    Thinking about getting started in rebreather diving? Here’s what you should know.

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  • in depth mag

    Revolutionizing Rebreather Diving

    The KISS Sidewinder 2 Story

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  • Society for Underwater Technology

    Technical Paper

    Analysis of human factors for safe diving with CCR

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  • Rebreather Forum

    Rebreather Forum 4

    Program, Presentations & Proceedings

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  • scubadiving.com

    Manual vs. Electronic Closed Circuit Rebreathers

    Which One Is Right for You?

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  • in depth mag

    Building and Diving a Dual JJ-CCR

    Dual Rebreather Project

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  • O2ptima CM Video

    Which Controller Do I Want?

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  • in depth mag

    Keep It Simple

    Musings About the SF2

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  • scubadiving.com

    How to Choose Between Rebreather Styles

    A quick guide to the different styles of closed-circuit rebreathers currently on the market.

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