Hello, fellow divers and diving enthusiasts! Let's breathe underwater without bubbles! Rebreather JJ-CCR action, insight from a technical diving instructor's perspective. I'm a technical diving instructor, and today we're going to delve into JJ-CCR rebreather in detail, looking at some important aspects that must be taken into account when planning and conducting dives with this equipment. It is essential to understand the nuances of each piece of equipment to ensure safety and efficiency underwater.
The Rebriser is intended only for experienced, certified divers who have been trained to use the breathing system of a particular model, or for those divers who are undergoing training and are under the direct supervision of a qualified instructor.
Even if you have experience in using underwater equipment, you should take the time to acquire knowledge in special courses. The reefer is intended for use by certified scuba divers who have completed a rebeer course or who are trained and supervised by a qualified instructor.
Apply and try eCCR CE Rebreather In Latvia, Lithuania or Estonia with an instructor (Full introduction to rebreather diving).
Vertical position with head down
One of the points that often raises questions is the compliance of the JJ-CCR with EN 14143 Section 5.6.1.4 (Hydrostatic imbalance test) for a -90 degree tilt, or vertical upside down position. It is important to understand that JJ-CCR does not meet the requirements of this test in such a position.
Why is this important? A vertical, head-down position during diving is extremely unusual and is usually only used when absolutely necessary. However, if a diver is forced into this position, there is a possibility that The ADV (Automatic Diluent Delivery Valve) may activate unexpectedly or start to flow freelyThis may cause unwanted loss of diluent and affect the composition of the loop.
To prevent this, if circumstances force you to take such a position, you need to close in-line shut-off valve on ADVThis way you have full control over the addition of diluent to the system using manual diluent addition valveThis will ensure optimal loop performance and allow you to maintain control even in non-standard situations. The main thing is to be prepared and know what to do.
Temperature conditions
The JJ-CCR is designed for diving with low to moderate loadThis means it is ideal for both recreational and technical diving activities. While it is capable of providing a high level of protection for the diver, this is not its primary purpose.
What happens if we work with a higher load? It should be noted that oxygen consumption and CO2 production increase, which in turn reduces the effectiveness time of soda limeIn other words, the operating time of your rebreather will be shortened.
In addition, high load can affect decompression. Everyone's body is different and reacts differently, so it's impossible to give exact numbers. However, I always recommend add an extra margin of safety for a decompression plan if you plan more intensive dives with the JJ-CCR. Remember, it is better to be overcautious than undercautious.
Stress levels and oxygen safety
JJ-CCR uses high-pressure oxygen as one of the gas mixtures. This is extremely important because the parts associated with it are cleaned and prepared especially for high-pressure oxygen use.
Why is this so important? Any incompatibility or mishandling of oxygen can cause an oxygen fire, which can cause serious injury or even death. Therefore, special care must be taken, especially filling an oxygen cylinder.
Regular and thorough maintenance and oxygen-compatible cleanliness is mandatory for all components exposed to high pressure oxygen. Any service or repair work involving these components, must be carried out by the manufacturer or a service center approved by JJ-CCR ApS. Do not attempt to do this work yourself unless you have the proper certification and equipment. It is not a risk worth taking.
Diving with a rebreather, especially with a modern device like the JJ-CCR, opens up new possibilities and allows us to explore the underwater world with unparalleled efficiency. However, with great opportunities comes great responsibility. Get to know your equipment, understand its limitations, and always follow the manufacturer's instructions and safety protocols. Safe diving is good diving!
Do you have any more questions about JJ-CCR or technical diving? I'd be happy to answer! Sign up and try eCCR CE Rebreather In Latvia, Lithuania or Estonia with an instructor (Full introduction to rebreather diving).
