Xccr Manual

[Veronica Hernandez]

Thisis where you will find links to download SubGravity CCR manuals, checklists, software and other cool SG CCR stuff. As we produce updated manuals and other documents for the rebreathers, we will post them here for download. Please check back often to ensure you have the latest version of the official CCR software, manuals and checklists.

Use the SubGravity CCR checklists every time you dive. We have created various versions which are intended to be used for differing purposes. If you have any questions about the checklists below, feel free to contact us at sup...@sub-gravity.com or speak with your factory approved SubGravity CCR instructor.

WARNING: Scuba diving is an inherently dangerous sport that can result in serious injury or death if you do not receive the proper training and practice safe diving techniques. All of our equipment requires proper training by a qualified individual before use. Contact us if you have any questions.

Our writers and editors look for the best Rebreathers available. We test, research, and review the best products in different categories with a focus on quality, performance, and the overall value for the price.

The Hollis Prism 2 is a pretty sleek-looking unit, and it has got some serious technical chops to boot. Plus there are a few options for divers, such as choosing between electronic or manual control options and back-mount or front-mount counter lungs. Explore open seas, caves, or wrecks with ease.

The X-CCR by iQsub offers some serious expedition credentials. The unit features CO2 monitoring and high-pressure sensors that display both diluent and O2 info on the primary handset, something many CCR divers will appreciate.

Choose from expedition or travel-sized canisters and over-shoulder or back-mount counter lungs, there are also seven different options for secondary PPO2 monitoring, including the Petrel 2 EXT. These are just two of the options you have with the standard unit. And with heaps of add-ons available, customizing your X-CCR to preference is a breeze.

Before you can even begin comparing rebreather units, you need to understand the fundamentals of rebreather diving. Learn more about standard rebreather components including what they do and how each part works.

Familiarize yourself with the different options and the differences. For example, you should know how radial and axial scrubbers vary, the key differences between back-mount and chest-mount counter lungs, the relative pros and cons of bailout valves or BOVs (also called OCBs) and DSVs, and other key matters.

In addition, Rebreathers Simplified, a 140-plus page guide to choosing a unit, will be helpful to new rebreather divers. Another commonly recommended book is Mastering Rebreathers by Jeff Bozanic, but be aware that this is now more than 20 years old.

Rebreathers take a lot of ongoing care and maintenance. Ignoring minor (or what you think are minor) issues is not an option, and it could even lead to a major in-water issue. So be prepared to service your rebreather after 12 months of use or 15 months after the date of production.

CCR units can be either electronic (ECCR) or manual (MCCR). With the former, a computer constantly measures the oxygen percentage in the breathing loop and maintains an oxygen partial pressure (PPO2) set point. In contrast, MCCR units require input from the diver. He or she will need to monitor the oxygen percentage in the breathing loop and inject more as needed to maintain a set PPO2. This entails a higher level of diver diligence and awareness.

A rebreather allows divers to recycle a significant amount of the air they breathe, thereby allowing the diver to stay underwater for extended periods of time. As such, choosing the right rebreather is crucial when going on more technical dives.

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